Merging upstream version 1.19.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

28 files changed, 3368 insertions, 116 deletions

diff --git a/health/notifications/Makefile.am b/health/notifications/Makefile.am
index efce90bd..606770fd 100644
--- a/health/notifications/Makefile.am
+++ b/health/notifications/Makefile.am
@@ -4,8 +4,8 @@ AUTOMAKE_OPTIONS = subdir-objects
 MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
 
 CLEANFILES = \
-	alarm-notify.sh \
-	$(NULL)
+    alarm-notify.sh \
+    $(NULL)
 
 include $(top_srcdir)/build/subst.inc
 SUFFIXES = .in
@@ -16,15 +16,15 @@ dist_libconfig_DATA = \
     $(NULL)
 
 dist_plugins_SCRIPTS = \
-	alarm-notify.sh \
-	alarm-email.sh \
-	alarm-test.sh \
-	$(NULL)
+    alarm-notify.sh \
+    alarm-email.sh \
+    alarm-test.sh \
+    $(NULL)
 
 dist_noinst_DATA = \
-	alarm-notify.sh.in \
-	README.md \
-	$(NULL)
+    alarm-notify.sh.in \
+    README.md \
+    $(NULL)
 
 include alerta/Makefile.inc
 include awssns/Makefile.inc
diff --git a/health/notifications/Makefile.in b/health/notifications/Makefile.in
new file mode 100644
index 00000000..58a117ac
--- /dev/null
+++ b/health/notifications/Makefile.in
@@ -0,0 +1,835 @@
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+    alarm-notify.sh \
+    $(NULL)
+
+SUFFIXES = .in
+dist_libconfig_DATA = \
+    health_alarm_notify.conf \
+    health_email_recipients.conf \
+    $(NULL)
+
+dist_plugins_SCRIPTS = \
+    alarm-notify.sh \
+    alarm-email.sh \
+    alarm-test.sh \
+    $(NULL)
+
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+dist_noinst_DATA = alarm-notify.sh.in README.md $(NULL) \
+	alerta/README.md alerta/Makefile.inc $(NULL) awssns/README.md \
+	awssns/Makefile.inc $(NULL) discord/README.md \
+	discord/Makefile.inc $(NULL) email/README.md \
+	email/Makefile.inc $(NULL) flock/README.md flock/Makefile.inc \
+	$(NULL) hangouts/README.md hangouts/Makefile.inc $(NULL) \
+	irc/README.md irc/Makefile.inc $(NULL) kavenegar/README.md \
+	kavenegar/Makefile.inc $(NULL) messagebird/README.md \
+	messagebird/Makefile.inc $(NULL) pagerduty/README.md \
+	pagerduty/Makefile.inc $(NULL) pushbullet/README.md \
+	pushbullet/Makefile.inc $(NULL) pushover/README.md \
+	pushover/Makefile.inc $(NULL) rocketchat/README.md \
+	rocketchat/Makefile.inc $(NULL) slack/README.md \
+	slack/Makefile.inc $(NULL) smstools3/README.md \
+	smstools3/Makefile.inc $(NULL) syslog/README.md \
+	syslog/Makefile.inc $(NULL) telegram/README.md \
+	telegram/Makefile.inc $(NULL) twilio/README.md \
+	twilio/Makefile.inc $(NULL) web/README.md web/Makefile.inc \
+	$(NULL) custom/README.md custom/Makefile.inc $(NULL)
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .in
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(top_srcdir)/build/subst.inc $(srcdir)/alerta/Makefile.inc $(srcdir)/awssns/Makefile.inc $(srcdir)/discord/Makefile.inc $(srcdir)/email/Makefile.inc $(srcdir)/flock/Makefile.inc $(srcdir)/hangouts/Makefile.inc $(srcdir)/irc/Makefile.inc $(srcdir)/kavenegar/Makefile.inc $(srcdir)/messagebird/Makefile.inc $(srcdir)/pagerduty/Makefile.inc $(srcdir)/pushbullet/Makefile.inc $(srcdir)/pushover/Makefile.inc $(srcdir)/rocketchat/Makefile.inc $(srcdir)/slack/Makefile.inc $(srcdir)/smstools3/Makefile.inc $(srcdir)/syslog/Makefile.inc $(srcdir)/telegram/Makefile.inc $(srcdir)/twilio/Makefile.inc $(srcdir)/web/Makefile.inc $(srcdir)/custom/Makefile.inc $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu health/notifications/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu health/notifications/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+$(top_srcdir)/build/subst.inc $(srcdir)/alerta/Makefile.inc $(srcdir)/awssns/Makefile.inc $(srcdir)/discord/Makefile.inc $(srcdir)/email/Makefile.inc $(srcdir)/flock/Makefile.inc $(srcdir)/hangouts/Makefile.inc $(srcdir)/irc/Makefile.inc $(srcdir)/kavenegar/Makefile.inc $(srcdir)/messagebird/Makefile.inc $(srcdir)/pagerduty/Makefile.inc $(srcdir)/pushbullet/Makefile.inc $(srcdir)/pushover/Makefile.inc $(srcdir)/rocketchat/Makefile.inc $(srcdir)/slack/Makefile.inc $(srcdir)/smstools3/Makefile.inc $(srcdir)/syslog/Makefile.inc $(srcdir)/telegram/Makefile.inc $(srcdir)/twilio/Makefile.inc $(srcdir)/web/Makefile.inc $(srcdir)/custom/Makefile.inc $(am__empty):
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+install-dist_pluginsSCRIPTS: $(dist_plugins_SCRIPTS)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_plugins_SCRIPTS)'; test -n "$(pluginsdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(pluginsdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(pluginsdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  if test -f "$$d$$p"; then echo "$$d$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n' \
+	    -e 'h;s|.*|.|' \
+	    -e 'p;x;s,.*/,,;$(transform)' | sed 'N;N;N;s,\n, ,g' | \
+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1; } \
+	  { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
+	    if ($$2 == $$4) { files[d] = files[d] " " $$1; \
+	      if (++n[d] == $(am__install_max)) { \
+		print "f", d, files[d]; n[d] = 0; files[d] = "" } } \
+	    else { print "f", d "/" $$4, $$1 } } \
+	  END { for (d in files) print "f", d, files[d] }' | \
+	while read type dir files; do \
+	     if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	     test -z "$$files" || { \
+	       echo " $(INSTALL_SCRIPT) $$files '$(DESTDIR)$(pluginsdir)$$dir'"; \
+	       $(INSTALL_SCRIPT) $$files "$(DESTDIR)$(pluginsdir)$$dir" || exit $$?; \
+	     } \
+	; done
+
+uninstall-dist_pluginsSCRIPTS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_plugins_SCRIPTS)'; test -n "$(pluginsdir)" || exit 0; \
+	files=`for p in $$list; do echo "$$p"; done | \
+	       sed -e 's,.*/,,;$(transform)'`; \
+	dir='$(DESTDIR)$(pluginsdir)'; $(am__uninstall_files_from_dir)
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+	@$(NORMAL_INSTALL)
+	@list='$(dist_libconfig_DATA)'; test -n "$(libconfigdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(libconfigdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(libconfigdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(libconfigdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(libconfigdir)" || exit $$?; \
+	done
+
+uninstall-dist_libconfigDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_libconfig_DATA)'; test -n "$(libconfigdir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(libconfigdir)'; $(am__uninstall_files_from_dir)
+tags TAGS:
+
+ctags CTAGS:
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+cscope cscopelist:
+
+
+distdir: $(DISTFILES)
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+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(SCRIPTS) $(DATA)
+installdirs:
+	for dir in "$(DESTDIR)$(pluginsdir)" "$(DESTDIR)$(libconfigdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
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+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
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+clean-am: clean-generic mostlyclean-am
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+distclean: distclean-am
+	-rm -f Makefile
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+html-am:
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+info: info-am
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+info-am:
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+install-data-am: install-dist_libconfigDATA \
+	install-dist_pluginsSCRIPTS
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+install-ps-am:
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+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
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+.MAKE: install-am install-strip
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+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dist_libconfigDATA \
+	install-dist_pluginsSCRIPTS install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
+	installcheck installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am \
+	uninstall-dist_libconfigDATA uninstall-dist_pluginsSCRIPTS
+
+.PRECIOUS: Makefile
+
+.in:
+	if sed \
+		-e 's#[@]localstatedir_POST@#$(localstatedir)#g' \
+		-e 's#[@]sbindir_POST@#$(sbindir)#g' \
+		-e 's#[@]pluginsdir_POST@#$(pluginsdir)#g' \
+		-e 's#[@]configdir_POST@#$(configdir)#g' \
+		-e 's#[@]libconfigdir_POST@#$(libconfigdir)#g' \
+		-e 's#[@]cachedir_POST@#$(cachedir)#g' \
+		-e 's#[@]registrydir_POST@#$(registrydir)#g' \
+		-e 's#[@]varlibdir_POST@#$(varlibdir)#g' \
+		$< > $@.tmp; then \
+		mv "$@.tmp" "$@"; \
+	else \
+		rm -f "$@.tmp"; \
+		false; \
+	fi
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/health/notifications/alarm-notify.sh b/health/notifications/alarm-notify.sh
new file mode 100644
index 00000000..5d41ba95
--- /dev/null
+++ b/health/notifications/alarm-notify.sh
@@ -0,0 +1,2428 @@
+#!/usr/bin/env bash
+#shellcheck source=/dev/null disable=SC2086,SC2154
+
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2017 Costa Tsaousis <costa@tsaousis.gr>
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# Script to send alarm notifications for netdata
+#
+# Features:
+#  - multiple notification methods
+#  - multiple roles per alarm
+#  - multiple recipients per role
+#  - severity filtering per recipient
+#
+# Supported notification methods:
+#  - emails by @ktsaou
+#  - slack.com notifications by @ktsaou
+#  - alerta.io notifications by @kattunga
+#  - discordapp.com notifications by @lowfive
+#  - pushover.net notifications by @ktsaou
+#  - pushbullet.com push notifications by Tiago Peralta @tperalta82 #1070
+#  - telegram.org notifications by @hashworks #1002
+#  - twilio.com notifications by Levi Blaney @shadycuz #1211
+#  - kafka notifications by @ktsaou #1342
+#  - pagerduty.com notifications by Jim Cooley @jimcooley #1373
+#  - messagebird.com notifications by @tech_no_logical #1453
+#  - hipchat notifications by @ktsaou #1561
+#  - fleep notifications by @Ferroin
+#  - prowlapp.com notifications by @Ferroin
+#  - irc notifications by @manosf
+#  - custom notifications by @ktsaou
+#  - syslog messages by @Ferroin
+#  - Microsoft Team notification by @tioumen
+#  - RocketChat notifications by @Hermsi1337 #3777
+#  - Google Hangouts Chat notifications by @EnzoAkira and @hendrikhofstadt
+
+# -----------------------------------------------------------------------------
+# testing notifications
+
+if { [ "${1}" = "test" ] || [ "${2}" = "test" ]; } && [ "${#}" -le 2 ]; then
+	if [ "${2}" = "test" ]; then
+		recipient="${1}"
+	else
+		recipient="${2}"
+	fi
+
+	[ -z "${recipient}" ] && recipient="sysadmin"
+
+	id=1
+	last="CLEAR"
+	test_res=0
+	for x in "WARNING" "CRITICAL" "CLEAR"; do
+		echo >&2
+		echo >&2 "# SENDING TEST ${x} ALARM TO ROLE: ${recipient}"
+
+		"${0}" "${recipient}" "$(hostname)" 1 1 "${id}" "$(date +%s)" "test_alarm" "test.chart" "test.family" "${x}" "${last}" 100 90 "${0}" 1 $((0 + id)) "units" "this is a test alarm to verify notifications work" "new value" "old value" "evaluated expression" "expression variable values" 0 0
+		#shellcheck disable=SC2181
+		if [ $? -ne 0 ]; then
+			echo >&2 "# FAILED"
+			test_res=1
+		else
+			echo >&2 "# OK"
+		fi
+
+		last="${x}"
+		id=$((id + 1))
+	done
+
+	exit $test_res
+fi
+
+export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
+export LC_ALL=C
+
+# -----------------------------------------------------------------------------
+
+PROGRAM_NAME="$(basename "${0}")"
+
+logdate() {
+	date "+%Y-%m-%d %H:%M:%S"
+}
+
+log() {
+	local status="${1}"
+	shift
+
+	echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}"
+
+}
+
+warning() {
+	log WARNING "${@}"
+}
+
+error() {
+	log ERROR "${@}"
+}
+
+info() {
+	log INFO "${@}"
+}
+
+fatal() {
+	log FATAL "${@}"
+	exit 1
+}
+
+debug=${NETDATA_ALARM_NOTIFY_DEBUG-0}
+debug() {
+	[ "${debug}" = "1" ] && log DEBUG "${@}"
+}
+
+docurl() {
+	if [ -z "${curl}" ]; then
+		error "${curl} is unset."
+		return 1
+	fi
+
+	if [ "${debug}" = "1" ]; then
+		echo >&2 "--- BEGIN curl command ---"
+		printf >&2 "%q " ${curl} "${@}"
+		echo >&2
+		echo >&2 "--- END curl command ---"
+
+		local out code ret
+		out=$(mktemp /tmp/netdata-health-alarm-notify-XXXXXXXX)
+		code=$(${curl} ${curl_options} --write-out "%{http_code}" --output "${out}" --silent --show-error "${@}")
+		ret=$?
+		echo >&2 "--- BEGIN received response ---"
+		cat >&2 "${out}"
+		echo >&2
+		echo >&2 "--- END received response ---"
+		echo >&2 "RECEIVED HTTP RESPONSE CODE: ${code}"
+		rm "${out}"
+		echo "${code}"
+		return ${ret}
+	fi
+
+	${curl} ${curl_options} --write-out "%{http_code}" --output /dev/null --silent --show-error "${@}"
+	return $?
+}
+
+# -----------------------------------------------------------------------------
+# List of all the notification mechanisms we support.
+# Used in a couple of places to write more compact code.
+
+method_names="
+email
+pushover
+pushbullet
+telegram
+slack
+alerta
+flock
+discord
+hipchat
+twilio
+messagebird
+pd
+fleep
+syslog
+custom
+msteam
+kavenegar
+prowl
+irc
+awssns
+rocketchat
+sms
+hangouts
+"
+
+# -----------------------------------------------------------------------------
+# this is to be overwritten by the config file
+
+custom_sender() {
+	info "not sending custom notification for ${status} of '${host}.${chart}.${name}'"
+}
+
+# -----------------------------------------------------------------------------
+
+# check for BASH v4+ (required for associative arrays)
+if [ ${BASH_VERSINFO[0]} -lt 4 ]; then
+	fatal "BASH version 4 or later is required (this is ${BASH_VERSION})."
+fi
+
+# -----------------------------------------------------------------------------
+# defaults to allow running this script by hand
+
+[ -z "${NETDATA_USER_CONFIG_DIR}" ] && NETDATA_USER_CONFIG_DIR="/etc/netdata"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="/usr/lib/netdata/conf.d"
+[ -z "${NETDATA_CACHE_DIR}" ] && NETDATA_CACHE_DIR="/var/cache/netdata"
+[ -z "${NETDATA_REGISTRY_URL}" ] && NETDATA_REGISTRY_URL="https://registry.my-netdata.io"
+[ -z "${NETDATA_REGISTRY_CLOUD_BASE_URL}" ] && NETDATA_REGISTRY_CLOUD_BASE_URL="https://netdata.cloud"
+
+# -----------------------------------------------------------------------------
+# parse command line parameters
+
+if [[ ${1} = "unittest" ]]; then
+	unittest=1        # enable unit testing mode
+	roles="${2}"      # the role that should be used for unit testing
+	cfgfile="${3}"    # the location of the config file to use for unit testing
+	status="${4}"     # the current status : REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
+	old_status="${5}" # the previous status: REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
+else
+	roles="${1}"               # the roles that should be notified for this event
+	args_host="${2}"           # the host generated this event
+	unique_id="${3}"           # the unique id of this event
+	alarm_id="${4}"            # the unique id of the alarm that generated this event
+	event_id="${5}"            # the incremental id of the event, for this alarm id
+	when="${6}"                # the timestamp this event occurred
+	name="${7}"                # the name of the alarm, as given in netdata health.d entries
+	chart="${8}"               # the name of the chart (type.id)
+	family="${9}"              # the family of the chart
+	status="${10}"             # the current status : REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
+	old_status="${11}"         # the previous status: REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
+	value="${12}"              # the current value of the alarm
+	old_value="${13}"          # the previous value of the alarm
+	src="${14}"                # the line number and file the alarm has been configured
+	duration="${15}"           # the duration in seconds of the previous alarm state
+	non_clear_duration="${16}" # the total duration in seconds this is/was non-clear
+	units="${17}"              # the units of the value
+	info="${18}"               # a short description of the alarm
+	value_string="${19}"       # friendly value (with units)
+	# shellcheck disable=SC2034
+	# variable is unused, but https://github.com/netdata/netdata/pull/5164#discussion_r255572947
+	old_value_string="${20}"   # friendly old value (with units), previously named "old_value_string"
+	calc_expression="${21}"    # contains the expression that was evaluated to trigger the alarm
+	calc_param_values="${22}"  # the values of the parameters in the expression, at the time of the evaluation
+	total_warnings="${23}"     # Total number of alarms in WARNING state
+	total_critical="${24}"     # Total number of alarms in CRITICAL state
+fi
+
+# -----------------------------------------------------------------------------
+# find a suitable hostname to use, if netdata did not supply a hostname
+
+if [ -z ${args_host} ]; then
+	this_host=$(hostname -s 2>/dev/null)
+	host="${this_host}"
+	args_host="${this_host}"
+else
+	host="${args_host}"
+fi
+
+# -----------------------------------------------------------------------------
+# screen statuses we don't need to send a notification
+
+# don't do anything if this is not WARNING, CRITICAL or CLEAR
+if [ "${status}" != "WARNING" ] && [ "${status}" != "CRITICAL" ] && [ "${status}" != "CLEAR" ]; then
+	info "not sending notification for ${status} of '${host}.${chart}.${name}'"
+	exit 1
+fi
+
+# don't do anything if this is CLEAR, but it was not WARNING or CRITICAL
+if [ "${clear_alarm_always}" != "YES" ] && [ "${old_status}" != "WARNING" ] && [ "${old_status}" != "CRITICAL" ] && [ "${status}" = "CLEAR" ]; then
+	info "not sending notification for ${status} of '${host}.${chart}.${name}' (last status was ${old_status})"
+	exit 1
+fi
+
+# -----------------------------------------------------------------------------
+# load configuration
+
+# By default fetch images from the global public registry.
+# This is required by default, since all notification methods need to download
+# images via the Internet, and private registries might not be reachable.
+# This can be overwritten at the configuration file.
+images_base_url="https://registry.my-netdata.io"
+
+# curl options to use
+curl_options=""
+
+# hostname handling
+use_fqdn="NO"
+
+# needed commands
+# if empty they will be searched in the system path
+curl=
+sendmail=
+
+# enable / disable features
+for method_name in ${method_names^^}; do
+	declare SEND_${method_name}="YES"
+	declare DEFAULT_RECIPIENT_${method_name}
+done
+
+for method_name in ${method_names}; do
+	declare -A role_recipients_${method_name}
+done
+
+# slack configs
+SLACK_WEBHOOK_URL=
+
+# Microsoft Team configs
+MSTEAM_WEBHOOK_URL=
+
+# rocketchat configs
+ROCKETCHAT_WEBHOOK_URL=
+
+# alerta configs
+ALERTA_WEBHOOK_URL=
+ALERTA_API_KEY=
+
+# flock configs
+FLOCK_WEBHOOK_URL=
+
+# discord configs
+DISCORD_WEBHOOK_URL=
+
+# pushover configs
+PUSHOVER_APP_TOKEN=
+
+# pushbullet configs
+PUSHBULLET_ACCESS_TOKEN=
+PUSHBULLET_SOURCE_DEVICE=
+
+# twilio configs
+TWILIO_ACCOUNT_SID=
+TWILIO_ACCOUNT_TOKEN=
+TWILIO_NUMBER=
+
+# hipchat configs
+HIPCHAT_SERVER=
+HIPCHAT_AUTH_TOKEN=
+
+# messagebird configs
+MESSAGEBIRD_ACCESS_KEY=
+MESSAGEBIRD_NUMBER=
+
+# kavenegar configs
+KAVENEGAR_API_KEY=
+KAVENEGAR_SENDER=
+
+# telegram configs
+TELEGRAM_BOT_TOKEN=
+
+# kafka configs
+SEND_KAFKA="YES"
+KAFKA_URL=
+KAFKA_SENDER_IP=
+
+# pagerduty.com configs
+PD_SERVICE_KEY=
+
+# fleep.io configs
+FLEEP_SENDER="${host}"
+
+# Amazon SNS configs
+AWSSNS_MESSAGE_FORMAT=
+
+# syslog configs
+SYSLOG_FACILITY=
+
+# email configs
+EMAIL_SENDER=
+EMAIL_CHARSET=$(locale charmap 2>/dev/null)
+EMAIL_THREADING=
+EMAIL_PLAINTEXT_ONLY=
+
+# irc configs
+IRC_NICKNAME=
+IRC_REALNAME=
+IRC_NETWORK=
+
+# hangouts configs
+declare -A HANGOUTS_WEBHOOK_URI
+
+# load the stock and user configuration files
+# these will overwrite the variables above
+
+if [ ${unittest} ]; then
+	if source "${cfgfile}"; then
+		error "Failed to load requested config file."
+		exit 1
+	fi
+else
+	for CONFIG in "${NETDATA_STOCK_CONFIG_DIR}/health_alarm_notify.conf" "${NETDATA_USER_CONFIG_DIR}/health_alarm_notify.conf"; do
+		if [ -f "${CONFIG}" ]; then
+			debug "Loading config file '${CONFIG}'..."
+			source "${CONFIG}" || error "Failed to load config file '${CONFIG}'."
+		else
+			warning "Cannot find file '${CONFIG}'."
+		fi
+	done
+fi
+
+# If we didn't autodetect the character set for e-mail and it wasn't
+# set by the user, we need to set it to a reasonable default.  UTF-8
+# should be correct for almost all modern UNIX systems.
+if [ -z ${EMAIL_CHARSET} ]; then
+	EMAIL_CHARSET="UTF-8"
+fi
+
+# If we've been asked to use FQDN's for the URL's in the alarm, do so,
+# unless we're sending an alarm for a slave system which we can't get the
+# FQDN of easily.
+if [ "${use_fqdn}" = "YES" ] && [ "${host}" = "$(hostname -s 2>/dev/null)" ]; then
+	host="$(hostname -f 2>/dev/null)"
+fi
+
+# -----------------------------------------------------------------------------
+# filter a recipient based on alarm event severity
+
+filter_recipient_by_criticality() {
+	local method="${1}" x="${2}" r s
+	shift
+
+	r="${x/|*/}" # the recipient
+	s="${x/*|/}" # the severity required for notifying this recipient
+
+	# no severity filtering for this person
+	[ "${r}" = "${s}" ] && return 0
+
+	# the severity is invalid
+	s="${s^^}"
+	if [ "${s}" != "CRITICAL" ]; then
+		error "SEVERITY FILTERING for ${x} VIA ${method}: invalid severity '${s,,}', only 'critical' is supported."
+		return 0
+	fi
+
+	# create the status tracking directory for this user
+	[ ! -d "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}" ] &&
+		mkdir -p "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}"
+
+	case "${status}" in
+	CRITICAL)
+		# make sure he will get future notifications for this alarm too
+		touch "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}"
+		debug "SEVERITY FILTERING for ${x} VIA ${method}: ALLOW: the alarm is CRITICAL (will now receive next status change)"
+		return 0
+		;;
+
+	WARNING)
+		if [ -f "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}" ]; then
+			# we do not remove the file, so that he will get future notifications of this alarm
+			debug "SEVERITY FILTERING for ${x} VIA ${method}: ALLOW: recipient has been notified for this alarm in the past (will still receive next status change)"
+			return 0
+		fi
+		;;
+
+	*)
+		if [ -f "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}" ]; then
+			# remove the file, so that he will only receive notifications for CRITICAL states for this alarm
+			rm "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}"
+			debug "SEVERITY FILTERING for ${x} VIA ${method}: ALLOW: recipient has been notified for this alarm (will only receive CRITICAL notifications from now on)"
+			return 0
+		fi
+		;;
+	esac
+
+	debug "SEVERITY FILTERING for ${x} VIA ${method}: BLOCK: recipient should not receive this notification"
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# verify the delivery methods supported
+
+# check slack
+[ -z "${SLACK_WEBHOOK_URL}" ] && SEND_SLACK="NO"
+
+# check rocketchat
+[ -z "${ROCKETCHAT_WEBHOOK_URL}" ] && SEND_ROCKETCHAT="NO"
+
+# check alerta
+[ -z "${ALERTA_WEBHOOK_URL}" ] && SEND_ALERTA="NO"
+
+# check flock
+[ -z "${FLOCK_WEBHOOK_URL}" ] && SEND_FLOCK="NO"
+
+# check discord
+[ -z "${DISCORD_WEBHOOK_URL}" ] && SEND_DISCORD="NO"
+
+# check pushover
+[ -z "${PUSHOVER_APP_TOKEN}" ] && SEND_PUSHOVER="NO"
+
+# check pushbullet
+[ -z "${PUSHBULLET_ACCESS_TOKEN}" ] && SEND_PUSHBULLET="NO"
+
+# check twilio
+{ [ -z "${TWILIO_ACCOUNT_TOKEN}" ] || [ -z "${TWILIO_ACCOUNT_SID}" ] || [ -z "${TWILIO_NUMBER}" ]; } && SEND_TWILIO="NO"
+
+# check hipchat
+[ -z "${HIPCHAT_AUTH_TOKEN}" ] && SEND_HIPCHAT="NO"
+
+# check messagebird
+{ [ -z "${MESSAGEBIRD_ACCESS_KEY}" ] || [ -z "${MESSAGEBIRD_NUMBER}" ]; } && SEND_MESSAGEBIRD="NO"
+
+# check kavenegar
+{ [ -z "${KAVENEGAR_API_KEY}" ] || [ -z "${KAVENEGAR_SENDER}" ]; } && SEND_KAVENEGAR="NO"
+
+# check telegram
+[ -z "${TELEGRAM_BOT_TOKEN}" ] && SEND_TELEGRAM="NO"
+
+# check kafka
+{ [ -z "${KAFKA_URL}" ] || [ -z "${KAFKA_SENDER_IP}" ]; } && SEND_KAFKA="NO"
+
+# check irc
+[ -z "${IRC_NETWORK}" ] && SEND_IRC="NO"
+
+# check hangouts
+[ ${#HANGOUTS_WEBHOOK_URI[@]} -eq 0 ] && SEND_HANGOUTS="NO"
+
+# check fleep
+#shellcheck disable=SC2153
+{ [ -z "${FLEEP_SERVER}" ] || [ -z "${FLEEP_SENDER}" ]; } && SEND_FLEEP="NO"
+
+if [ "${SEND_PUSHOVER}" = "YES" ] ||
+	[ "${SEND_SLACK}" = "YES" ] ||
+	[ "${SEND_ROCKETCHAT}" = "YES" ] ||
+	[ "${SEND_ALERTA}" = "YES" ] ||
+	[ "${SEND_PD}" = "YES" ] ||
+	[ "${SEND_FLOCK}" = "YES" ] ||
+	[ "${SEND_DISCORD}" = "YES" ] ||
+	[ "${SEND_HIPCHAT}" = "YES" ] ||
+	[ "${SEND_TWILIO}" = "YES" ] ||
+	[ "${SEND_MESSAGEBIRD}" = "YES" ] ||
+	[ "${SEND_KAVENEGAR}" = "YES" ] ||
+	[ "${SEND_TELEGRAM}" = "YES" ] ||
+	[ "${SEND_PUSHBULLET}" = "YES" ] ||
+	[ "${SEND_KAFKA}" = "YES" ] ||
+	[ "${SEND_FLEEP}" = "YES" ] ||
+	[ "${SEND_PROWL}" = "YES" ] ||
+	[ "${SEND_HANGOUTS}" = "YES" ] ||
+	[ "${SEND_CUSTOM}" = "YES" ] ||
+	[ "${SEND_MSTEAM}" = "YES" ]; then
+	# if we need curl, check for the curl command
+	if [ -z "${curl}" ]; then
+		curl="$(command -v curl 2>/dev/null)"
+	fi
+	if [ -z "${curl}" ]; then
+		error "Cannot find curl command in the system path. Disabling all curl based notifications."
+		SEND_PUSHOVER="NO"
+		SEND_PUSHBULLET="NO"
+		SEND_TELEGRAM="NO"
+		SEND_SLACK="NO"
+		SEND_MSTEAM="NO"
+		SEND_ROCKETCHAT="NO"
+		SEND_ALERTA="NO"
+		SEND_PD="NO"
+		SEND_FLOCK="NO"
+		SEND_DISCORD="NO"
+		SEND_TWILIO="NO"
+		SEND_HIPCHAT="NO"
+		SEND_MESSAGEBIRD="NO"
+		SEND_KAVENEGAR="NO"
+		SEND_KAFKA="NO"
+		SEND_FLEEP="NO"
+		SEND_PROWL="NO"
+		SEND_HANGOUTS="NO"
+		SEND_CUSTOM="NO"
+	fi
+fi
+
+if [ "${SEND_SMS}" = "YES" ]; then
+	if [ -z "${sendsms}" ]; then
+		sendsms="$(command -v sendsms 2>/dev/null)"
+	fi
+	if [ -z "${sendsms}" ]; then
+		SEND_SMS="NO"
+	fi
+fi
+# if we need sendmail, check for the sendmail command
+if [ "${SEND_EMAIL}" = "YES" ] && [ -z "${sendmail}" ]; then
+	sendmail="$(command -v sendmail 2>/dev/null)"
+	if [ -z "${sendmail}" ]; then
+		debug "Cannot find sendmail command in the system path. Disabling email notifications."
+		SEND_EMAIL="NO"
+	fi
+fi
+
+# if we need logger, check for the logger command
+if [ "${SEND_SYSLOG}" = "YES" ] && [ -z "${logger}" ]; then
+	logger="$(command -v logger 2>/dev/null)"
+	if [ -z "${logger}" ]; then
+		debug "Cannot find logger command in the system path. Disabling syslog notifications."
+		SEND_SYSLOG="NO"
+	fi
+fi
+
+# if we need aws, check for the aws command
+if [ "${SEND_AWSSNS}" = "YES" ] && [ -z "${aws}" ]; then
+	aws="$(command -v aws 2>/dev/null)"
+	if [ -z "${aws}" ]; then
+		debug "Cannot find aws command in the system path.  Disabling Amazon SNS notifications."
+		SEND_AWSSNS="NO"
+	fi
+fi
+
+# -----------------------------------------------------------------------------
+# find the recipients' addresses per method
+
+# netdata may call us with multiple roles, and roles may have multiple but
+# overlapping recipients - so, here we find the unique recipients.
+for method_name in ${method_names}; do
+	send_var="SEND_${method_name^^}"
+	if [ "${!send_var}" = "NO" ]; then
+		continue
+	fi
+
+	declare -A arr_var=()
+
+	for x in ${roles//,/ }; do
+		# the roles 'silent' and 'disabled' mean:
+		# don't send a notification for this role
+		if [ "${x}" = "silent" ] || [ "${x}" = "disabled" ]; then
+			continue
+		fi
+
+		role_recipients="role_recipients_${method_name}[$x]"
+		default_recipient_var="DEFAULT_RECIPIENT_${method_name^^}"
+
+		a="${!role_recipients}"
+		[ -z "${a}" ] && a="${!default_recipient_var}"
+		for r in ${a//,/ }; do
+			[ "${r}" != "disabled" ] && filter_recipient_by_criticality ${method_name} "${r}" && arr_var[${r/|*/}]="1"
+		done
+	done
+
+	# build the list of recipients
+	to_var="to_${method_name}"
+	declare to_${method_name}="${!arr_var[*]}"
+
+	[ -z "${!to_var}" ] && declare ${send_var}="NO"
+done
+
+# -----------------------------------------------------------------------------
+# handle fixup of the email recipient list.
+
+fix_to_email() {
+	to_email=
+	while [ -n "${1}" ]; do
+		[ -n "${to_email}" ] && to_email="${to_email}, "
+		to_email="${to_email}${1}"
+		shift 1
+	done
+}
+
+# ${to_email} without quotes here
+fix_to_email ${to_email}
+
+# -----------------------------------------------------------------------------
+# handle output if we're running in unit test mode
+if [ ${unittest} ]; then
+	for method_name in ${method_names}; do
+		to_var="to_${method_name}"
+		echo "results: ${method_name}: ${!to_var}"
+	done
+	exit 0
+fi
+
+# -----------------------------------------------------------------------------
+# check that we have at least a method enabled
+proceed=0
+for method in "${SEND_EMAIL}" \
+	"${SEND_PUSHOVER}" \
+	"${SEND_TELEGRAM}" \
+	"${SEND_SLACK}" \
+	"${SEND_ROCKETCHAT}" \
+	"${SEND_ALERTA}" \
+	"${SEND_FLOCK}" \
+	"${SEND_DISCORD}" \
+	"${SEND_TWILIO}" \
+	"${SEND_HIPCHAT}" \
+	"${SEND_MESSAGEBIRD}" \
+	"${SEND_KAVENEGAR}" \
+	"${SEND_PUSHBULLET}" \
+	"${SEND_KAFKA}" \
+	"${SEND_PD}" \
+	"${SEND_FLEEP}" \
+	"${SEND_PROWL}" \
+	"${SEND_CUSTOM}" \
+	"${SEND_IRC}" \
+	"${SEND_HANGOUTS}" \
+	"${SEND_AWSSNS}" \
+	"${SEND_SYSLOG}" \
+	"${SEND_SMS}" \
+	"${SEND_MSTEAM}"; do
+	if [ "${method}" == "YES" ]; then
+		proceed=1
+		break
+	fi
+done
+if [ "$proceed" -eq 0 ]; then
+	fatal "All notification methods are disabled. Not sending notification for host '${host}', chart '${chart}' to '${roles}' for '${name}' = '${value}' for status '${status}'."
+fi
+
+# -----------------------------------------------------------------------------
+# get the date the alarm happened
+
+date=$(date --date=@${when} "${date_format}" 2>/dev/null)
+[ -z "${date}" ] && date=$(date "${date_format}" 2>/dev/null)
+[ -z "${date}" ] && date=$(date --date=@${when} 2>/dev/null)
+[ -z "${date}" ] && date=$(date 2>/dev/null)
+
+# ----------------------------------------------------------------------------
+# prepare some extra headers if we've been asked to thread e-mails
+if [ "${SEND_EMAIL}" == "YES" ] && [ "${EMAIL_THREADING}" != "NO" ]; then
+	email_thread_headers="In-Reply-To: <${chart}-${name}@${host}>\\r\\nReferences: <${chart}-${name}@${host}>"
+else
+	email_thread_headers=
+fi
+
+# -----------------------------------------------------------------------------
+# function to URL encode a string
+
+urlencode() {
+	local string="${1}" strlen encoded pos c o
+
+	strlen=${#string}
+	for ((pos = 0; pos < strlen; pos++)); do
+		c=${string:pos:1}
+		case "${c}" in
+		[-_.~a-zA-Z0-9])
+			o="${c}"
+			;;
+
+		*)
+			printf -v o '%%%02x' "'${c}"
+			;;
+		esac
+		encoded+="${o}"
+	done
+
+	REPLY="${encoded}"
+	echo "${REPLY}"
+}
+
+# -----------------------------------------------------------------------------
+# function to convert a duration in seconds, to a human readable duration
+# using DAYS, MINUTES, SECONDS
+
+duration4human() {
+	local s="${1}" d=0 h=0 m=0 ds="day" hs="hour" ms="minute" ss="second" ret
+	d=$((s / 86400))
+	s=$((s - (d * 86400)))
+	h=$((s / 3600))
+	s=$((s - (h * 3600)))
+	m=$((s / 60))
+	s=$((s - (m * 60)))
+
+	if [ ${d} -gt 0 ]; then
+		[ ${m} -ge 30 ] && h=$((h + 1))
+		[ ${d} -gt 1 ] && ds="days"
+		[ ${h} -gt 1 ] && hs="hours"
+		if [ ${h} -gt 0 ]; then
+			ret="${d} ${ds} and ${h} ${hs}"
+		else
+			ret="${d} ${ds}"
+		fi
+	elif [ ${h} -gt 0 ]; then
+		[ ${s} -ge 30 ] && m=$((m + 1))
+		[ ${h} -gt 1 ] && hs="hours"
+		[ ${m} -gt 1 ] && ms="minutes"
+		if [ ${m} -gt 0 ]; then
+			ret="${h} ${hs} and ${m} ${ms}"
+		else
+			ret="${h} ${hs}"
+		fi
+	elif [ ${m} -gt 0 ]; then
+		[ ${m} -gt 1 ] && ms="minutes"
+		[ ${s} -gt 1 ] && ss="seconds"
+		if [ ${s} -gt 0 ]; then
+			ret="${m} ${ms} and ${s} ${ss}"
+		else
+			ret="${m} ${ms}"
+		fi
+	else
+		[ ${s} -gt 1 ] && ss="seconds"
+		ret="${s} ${ss}"
+	fi
+
+	REPLY="${ret}"
+	echo "${REPLY}"
+}
+
+# -----------------------------------------------------------------------------
+# email sender
+
+send_email() {
+	local ret opts=() sender_email="${EMAIL_SENDER}" sender_name=
+	if [ "${SEND_EMAIL}" = "YES" ]; then
+
+		if [ -n "${EMAIL_SENDER}" ]; then
+			if [[ ${EMAIL_SENDER} =~ ^\".*\"\ \<.*\>$ ]]; then
+				# the name includes double quotes
+				sender_email="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1)"
+				sender_name="$(echo "${EMAIL_SENDER}" | cut -d '"' -f 2)"
+			elif [[ ${EMAIL_SENDER} =~ ^\'.*\'\ \<.*\>$ ]]; then
+				# the name includes single quotes
+				sender_email="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1)"
+				sender_name="$(echo "${EMAIL_SENDER}" | cut -d "'" -f 2)"
+			elif [[ ${EMAIL_SENDER} =~ ^.*\ \<.*\>$ ]]; then
+				# the name does not have any quotes
+				sender_email="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1)"
+				sender_name="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 1)"
+			fi
+		fi
+
+		[ -n "${sender_email}" ] && opts+=(-f "${sender_email}")
+		[ -n "${sender_name}" ] && opts+=(-F "${sender_name}")
+
+		if [ "${debug}" = "1" ]; then
+			echo >&2 "--- BEGIN sendmail command ---"
+			printf >&2 "%q " "${sendmail}" -t "${opts[@]}"
+			echo >&2
+			echo >&2 "--- END sendmail command ---"
+		fi
+
+		"${sendmail}" -t "${opts[@]}"
+		ret=$?
+
+		if [ ${ret} -eq 0 ]; then
+			info "sent email notification for: ${host} ${chart}.${name} is ${status} to '${to_email}'"
+			return 0
+		else
+			error "failed to send email notification for: ${host} ${chart}.${name} is ${status} to '${to_email}' with error code ${ret}."
+			return 1
+		fi
+	fi
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# pushover sender
+
+send_pushover() {
+	local apptoken="${1}" usertokens="${2}" when="${3}" url="${4}" status="${5}" title="${6}" message="${7}" httpcode sent=0 user priority
+
+	if [ "${SEND_PUSHOVER}" = "YES" ] && [ -n "${apptoken}" ] && [ -n "${usertokens}" ] && [ -n "${title}" ] && [ -n "${message}" ]; then
+
+		# https://pushover.net/api
+		priority=-2
+		case "${status}" in
+		CLEAR) priority=-1 ;; # low priority: no sound or vibration
+		WARNING) priority=0 ;; # normal priority: respect quiet hours
+		CRITICAL) priority=1 ;; # high priority: bypass quiet hours
+		*) priority=-2 ;; # lowest priority: no notification at all
+		esac
+
+		for user in ${usertokens}; do
+			httpcode=$(docurl \
+				--form-string "token=${apptoken}" \
+				--form-string "user=${user}" \
+				--form-string "html=1" \
+				--form-string "title=${title}" \
+				--form-string "message=${message}" \
+				--form-string "timestamp=${when}" \
+				--form-string "url=${url}" \
+				--form-string "url_title=Open netdata dashboard to view the alarm" \
+				--form-string "priority=${priority}" \
+				https://api.pushover.net/1/messages.json)
+
+			if [ "${httpcode}" = "200" ]; then
+				info "sent pushover notification for: ${host} ${chart}.${name} is ${status} to '${user}'"
+				sent=$((sent + 1))
+			else
+				error "failed to send pushover notification for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+			fi
+		done
+
+		[ ${sent} -gt 0 ] && return 0
+	fi
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# pushbullet sender
+
+send_pushbullet() {
+	local userapikey="${1}" source_device="${2}" recipients="${3}" url="${4}" title="${5}" message="${6}" httpcode sent=0 user
+	if [ "${SEND_PUSHBULLET}" = "YES" ] && [ -n "${userapikey}" ] && [ -n "${recipients}" ] && [ -n "${message}" ] && [ -n "${title}" ]; then
+		#https://docs.pushbullet.com/#create-push
+		for user in ${recipients}; do
+			httpcode=$(docurl \
+				--header 'Access-Token: '${userapikey}'' \
+				--header 'Content-Type: application/json' \
+				--data-binary @<(
+					cat <<EOF
+                              {"title": "${title}",
+                              "type": "link",
+                              "email": "${user}",
+                              "body": "$(echo -n ${message})",
+                              "url": "${url}",
+                              "source_device_iden": "${source_device}"}
+EOF
+				) "https://api.pushbullet.com/v2/pushes" -X POST)
+
+			if [ "${httpcode}" = "200" ]; then
+				info "sent pushbullet notification for: ${host} ${chart}.${name} is ${status} to '${user}'"
+				sent=$((sent + 1))
+			else
+				error "failed to send pushbullet notification for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+			fi
+		done
+
+		[ ${sent} -gt 0 ] && return 0
+	fi
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# kafka sender
+
+send_kafka() {
+	local httpcode sent=0
+	if [ "${SEND_KAFKA}" = "YES" ]; then
+		httpcode=$(docurl -X POST \
+			--data "{host_ip:\"${KAFKA_SENDER_IP}\",when:${when},name:\"${name}\",chart:\"${chart}\",family:\"${family}\",status:\"${status}\",old_status:\"${old_status}\",value:${value},old_value:${old_value},duration:${duration},non_clear_duration:${non_clear_duration},units:\"${units}\",info:\"${info}\"}" \
+			"${KAFKA_URL}")
+
+		if [ "${httpcode}" = "204" ]; then
+			info "sent kafka data for: ${host} ${chart}.${name} is ${status} and ip '${KAFKA_SENDER_IP}'"
+			sent=$((sent + 1))
+		else
+			error "failed to send kafka data for: ${host} ${chart}.${name} is ${status} and ip '${KAFKA_SENDER_IP}' with HTTP error code ${httpcode}."
+		fi
+
+		[ ${sent} -gt 0 ] && return 0
+	fi
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# pagerduty.com sender
+
+send_pd() {
+	local recipients="${1}" sent=0
+	unset t
+	case ${status} in
+	CLEAR) t='resolve' ;;
+	WARNING) t='trigger' ;;
+	CRITICAL) t='trigger' ;;
+	esac
+
+	if [ ${SEND_PD} = "YES" ] && [ -n "${t}" ]; then
+		for PD_SERVICE_KEY in ${recipients}; do
+			d="${status} ${name} = ${value_string} - ${host}, ${family}"
+			payload="$(
+				cat <<EOF
+            {
+              "service_key": "${PD_SERVICE_KEY}",
+              "event_type": "${t}",
+              "incident_key" : "${alarm_id}",
+              "description": "${d}",
+              "details": {
+                "value_w_units": "${value_string}",
+                "when": "${when}",
+                "duration" : "${duration}",
+                "roles": "${roles}",
+                "alarm_id" : "${alarm_id}",
+                "name" : "${name}",
+                "chart" : "${chart}",
+                "family" : "${family}",
+                "status" : "${status}",
+                "old_status" : "${old_status}",
+                "value" : "${value}",
+                "old_value" : "${old_value}",
+                "src" : "${src}",
+                "non_clear_duration" : "${non_clear_duration}",
+                "units" : "${units}",
+                "info" : "${info}"
+              }
+            }
+EOF
+			)"
+			httpcode=$(docurl -X POST --data "${payload}" "https://events.pagerduty.com/generic/2010-04-15/create_event.json")
+			if [ "${httpcode}" = "200" ]; then
+				info "sent pagerduty notification for: ${host} ${chart}.${name} is ${status}'"
+				sent=$((sent + 1))
+			else
+				error "failed to send pagerduty notification for: ${host} ${chart}.${name} is ${status}, with HTTP error code ${httpcode}."
+			fi
+		done
+
+		[ ${sent} -gt 0 ] && return 0
+	fi
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# twilio sender
+
+send_twilio() {
+	local accountsid="${1}" accounttoken="${2}" twilionumber="${3}" recipients="${4}" title="${5}" message="${6}" httpcode sent=0 user
+	if [ "${SEND_TWILIO}" = "YES" ] && [ -n "${accountsid}" ] && [ -n "${accounttoken}" ] && [ -n "${twilionumber}" ] && [ -n "${recipients}" ] && [ -n "${message}" ] && [ -n "${title}" ]; then
+		#https://www.twilio.com/packages/labs/code/bash/twilio-sms
+		for user in ${recipients}; do
+			httpcode=$(docurl -X POST \
+				--data-urlencode "From=${twilionumber}" \
+				--data-urlencode "To=${user}" \
+				--data-urlencode "Body=${title} ${message}" \
+				-u "${accountsid}:${accounttoken}" \
+				"https://api.twilio.com/2010-04-01/Accounts/${accountsid}/Messages.json")
+
+			if [ "${httpcode}" = "201" ]; then
+				info "sent Twilio SMS for: ${host} ${chart}.${name} is ${status} to '${user}'"
+				sent=$((sent + 1))
+			else
+				error "failed to send Twilio SMS for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+			fi
+		done
+
+		[ ${sent} -gt 0 ] && return 0
+	fi
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# hipchat sender
+
+send_hipchat() {
+	local authtoken="${1}" recipients="${2}" message="${3}" httpcode sent=0 room color msg_format notify
+
+	# remove <small></small> from the message
+	message="${message//<small>/}"
+	message="${message//<\/small>/}"
+
+	if [ "${SEND_HIPCHAT}" = "YES" ] && [ -n "${HIPCHAT_SERVER}" ] && [ -n "${authtoken}" ] && [ -n "${recipients}" ] && [ -n "${message}" ]; then
+		# Valid values: html, text.
+		# Defaults to 'html'.
+		msg_format="html"
+
+		# Background color for message. Valid values: yellow, green, red, purple, gray, random. Defaults to 'yellow'.
+		case "${status}" in
+		WARNING) color="yellow" ;;
+		CRITICAL) color="red" ;;
+		CLEAR) color="green" ;;
+		*) color="gray" ;;
+		esac
+
+		# Whether this message should trigger a user notification (change the tab color, play a sound, notify mobile phones, etc).
+		# Each recipient's notification preferences are taken into account.
+		# Defaults to false.
+		notify="true"
+
+		for room in ${recipients}; do
+			httpcode=$(docurl -X POST \
+				-H "Content-type: application/json" \
+				-H "Authorization: Bearer ${authtoken}" \
+				-d "{\"color\": \"${color}\", \"from\": \"${host}\", \"message_format\": \"${msg_format}\", \"message\": \"${message}\", \"notify\": \"${notify}\"}" \
+				"https://${HIPCHAT_SERVER}/v2/room/${room}/notification")
+
+			if [ "${httpcode}" = "204" ]; then
+				info "sent HipChat notification for: ${host} ${chart}.${name} is ${status} to '${room}'"
+				sent=$((sent + 1))
+			else
+				error "failed to send HipChat notification for: ${host} ${chart}.${name} is ${status} to '${room}' with HTTP error code ${httpcode}."
+			fi
+		done
+
+		[ ${sent} -gt 0 ] && return 0
+	fi
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# messagebird sender
+
+send_messagebird() {
+	local accesskey="${1}" messagebirdnumber="${2}" recipients="${3}" title="${4}" message="${5}" httpcode sent=0 user
+	if [ "${SEND_MESSAGEBIRD}" = "YES" ] && [ -n "${accesskey}" ] && [ -n "${messagebirdnumber}" ] && [ -n "${recipients}" ] && [ -n "${message}" ] && [ -n "${title}" ]; then
+		#https://developers.messagebird.com/docs/messaging
+		for user in ${recipients}; do
+			httpcode=$(docurl -X POST \
+				--data-urlencode "originator=${messagebirdnumber}" \
+				--data-urlencode "recipients=${user}" \
+				--data-urlencode "body=${title} ${message}" \
+				--data-urlencode "datacoding=auto" \
+				-H "Authorization: AccessKey ${accesskey}" \
+				"https://rest.messagebird.com/messages")
+
+			if [ "${httpcode}" = "201" ]; then
+				info "sent Messagebird SMS for: ${host} ${chart}.${name} is ${status} to '${user}'"
+				sent=$((sent + 1))
+			else
+				error "failed to send Messagebird SMS for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+			fi
+		done
+
+		[ ${sent} -gt 0 ] && return 0
+	fi
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# kavenegar sender
+
+send_kavenegar() {
+	local API_KEY="${1}" kavenegarsender="${2}" recipients="${3}" title="${4}" message="${5}" httpcode sent=0 user
+	if [ "${SEND_KAVENEGAR}" = "YES" ] && [ -n "${API_KEY}" ] && [ -n "${kavenegarsender}" ] && [ -n "${recipients}" ] && [ -n "${message}" ] && [ -n "${title}" ]; then
+		# http://api.kavenegar.com/v1/{API-KEY}/sms/send.json
+		for user in ${recipients}; do
+			httpcode=$(docurl -X POST http://api.kavenegar.com/v1/${API_KEY}/sms/send.json \
+				--data-urlencode "sender=${kavenegarsender}" \
+				--data-urlencode "receptor=${user}" \
+				--data-urlencode "message=${title} ${message}")
+
+			if [ "${httpcode}" = "200" ]; then
+				info "sent Kavenegar SMS for: ${host} ${chart}.${name} is ${status} to '${user}'"
+				sent=$((sent + 1))
+			else
+				error "failed to send Kavenegar SMS for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+			fi
+		done
+
+		[ ${sent} -gt 0 ] && return 0
+	fi
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# telegram sender
+
+send_telegram() {
+	local bottoken="${1}" chatids="${2}" message="${3}" httpcode sent=0 chatid emoji disableNotification=""
+
+	if [ "${status}" = "CLEAR" ]; then disableNotification="--data-urlencode disable_notification=true"; fi
+
+	case "${status}" in
+	WARNING) emoji="⚠️" ;;
+	CRITICAL) emoji="🔴" ;;
+	CLEAR) emoji="✅" ;;
+	*) emoji="⚪️" ;;
+	esac
+
+	if [ "${SEND_TELEGRAM}" = "YES" ] && [ -n "${bottoken}" ] && [ -n "${chatids}" ] && [ -n "${message}" ]; then
+		for chatid in ${chatids}; do
+			# https://core.telegram.org/bots/api#sendmessage
+			httpcode=$(docurl ${disableNotification} \
+				--data-urlencode "parse_mode=HTML" \
+				--data-urlencode "disable_web_page_preview=true" \
+				--data-urlencode "text=${emoji} ${message}" \
+				"https://api.telegram.org/bot${bottoken}/sendMessage?chat_id=${chatid}")
+
+			if [ "${httpcode}" = "200" ]; then
+				info "sent telegram notification for: ${host} ${chart}.${name} is ${status} to '${chatid}'"
+				sent=$((sent + 1))
+			elif [ "${httpcode}" = "401" ]; then
+				error "failed to send telegram notification for: ${host} ${chart}.${name} is ${status} to '${chatid}': Wrong bot token."
+			else
+				error "failed to send telegram notification for: ${host} ${chart}.${name} is ${status} to '${chatid}' with HTTP error code ${httpcode}."
+			fi
+		done
+
+		[ ${sent} -gt 0 ] && return 0
+	fi
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# Microsoft Team sender
+
+send_msteam() {
+
+	local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+	[ "${SEND_MSTEAM}" != "YES" ] && return 1
+
+	case "${status}" in
+	WARNING) icon="${MSTEAM_ICON_WARNING}" && color="${MSTEAM_COLOR_WARNING}" ;;
+	CRITICAL) icon="${MSTEAM_ICON_CRITICAL}" && color="${MSTEAM_COLOR_CRITICAL}" ;;
+	CLEAR) icon="${MSTEAM_ICON_CLEAR}" && color="${MSTEAM_COLOR_CLEAR}" ;;
+	*) icon="${MSTEAM_ICON_DEFAULT}" && color="${MSTEAM_COLOR_DEFAULT}" ;;
+	esac
+
+	for channel in ${channels}; do
+		## More details are available here regarding the payload syntax options : https://docs.microsoft.com/en-us/outlook/actionable-messages/message-card-reference
+		## Online designer : https://acdesignerbeta.azurewebsites.net/
+		payload="$(
+			cat <<EOF
+        {
+            "@context": "http://schema.org/extensions",
+            "@type": "MessageCard",
+            "themeColor": "${color}",
+            "title": "$icon Alert ${status} from netdata for ${host}",
+            "text": "${host} ${status_message}, ${chart} (_${family}_), *${alarm}*",
+            "potentialAction": [
+            {
+                "@type": "OpenUri",
+                "name": "Netdata",
+                "targets": [
+                { "os": "default", "uri": "${goto_url}" }
+                ]
+            }
+            ]
+        }
+EOF
+		)"
+
+		# Replacing in the webhook CHANNEL string by the MS Teams channel name from conf file.
+		webhook="${webhook//CHANNEL/${channel}}"
+
+		httpcode=$(docurl -H "Content-Type: application/json" -d "${payload}" "${webhook}")
+
+		if [ "${httpcode}" = "200" ]; then
+			info "sent Microsoft team notification for: ${host} ${chart}.${name} is ${status} to '${webhook}'"
+			sent=$((sent + 1))
+		else
+			error "failed to send Microsoft team notification for: ${host} ${chart}.${name} is ${status} to '${webhook}', with HTTP error code ${httpcode}."
+		fi
+	done
+
+	[ ${sent} -gt 0 ] && return 0
+
+	return 1
+}
+
+# slack sender
+
+send_slack() {
+	local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+	[ "${SEND_SLACK}" != "YES" ] && return 1
+
+	case "${status}" in
+	WARNING) color="warning" ;;
+	CRITICAL) color="danger" ;;
+	CLEAR) color="good" ;;
+	*) color="#777777" ;;
+	esac
+
+	for channel in ${channels}; do
+		# Default entry in the recipient is without a hash in front (backwards-compatible). Accept specification of channel or user.
+		if [ "${channel::1}" != "#" ] && [ "${channel::1}" != "@" ]; then channel="#$channel"; fi
+
+		# If channel is equal to "#" then do not send the channel attribute at all. Slack also defines channels and users in webhooks.
+		if [ "${channel}" = "#" ]; then
+			ch=""
+			chstr="without specifying a channel"
+		else
+			ch="\"channel\": \"${channel}\","
+			chstr="to '${channel}'"
+		fi
+
+		payload="$(
+			cat <<EOF
+        {
+            $ch
+            "username": "netdata on ${host}",
+            "icon_url": "${images_base_url}/images/banner-icon-144x144.png",
+            "text": "${host} ${status_message}, \`${chart}\` (_${family}_), *${alarm}*",
+            "attachments": [
+                {
+                    "fallback": "${alarm} - ${chart} (${family}) - ${info}",
+                    "color": "${color}",
+                    "title": "${alarm}",
+                    "title_link": "${goto_url}",
+                    "text": "${info}",
+                    "fields": [
+                        {
+                            "title": "${chart}",
+                            "short": true
+                        },
+                        {
+                            "title": "${family}",
+                            "short": true
+                        }
+                    ],
+                    "thumb_url": "${image}",
+                    "footer": "by ${host}",
+                    "ts": ${when}
+                }
+            ]
+        }
+EOF
+		)"
+
+		httpcode=$(docurl -X POST --data-urlencode "payload=${payload}" "${webhook}")
+		if [ "${httpcode}" = "200" ]; then
+			info "sent slack notification for: ${host} ${chart}.${name} is ${status} ${chstr}"
+			sent=$((sent + 1))
+		else
+			error "failed to send slack notification for: ${host} ${chart}.${name} is ${status} ${chstr}, with HTTP error code ${httpcode}."
+		fi
+	done
+
+	[ ${sent} -gt 0 ] && return 0
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# rocketchat sender
+
+send_rocketchat() {
+	local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+	[ "${SEND_ROCKETCHAT}" != "YES" ] && return 1
+
+	case "${status}" in
+	WARNING) color="warning" ;;
+	CRITICAL) color="danger" ;;
+	CLEAR) color="good" ;;
+	*) color="#777777" ;;
+	esac
+
+	for channel in ${channels}; do
+		payload="$(
+			cat <<EOF
+        {
+            "channel": "#${channel}",
+            "alias": "netdata on ${host}",
+            "avatar": "${images_base_url}/images/banner-icon-144x144.png",
+            "text": "${host} ${status_message}, \`${chart}\` (_${family}_), *${alarm}*",
+            "attachments": [
+                {
+                    "color": "${color}",
+                    "title": "${alarm}",
+                    "title_link": "${goto_url}",
+                    "text": "${info}",
+                    "fields": [
+                        {
+                            "title": "${chart}",
+                            "short": true,
+                            "value": "chart"
+                        },
+                        {
+                            "title": "${family}",
+                            "short": true,
+                            "value": "family"
+                        }
+                    ],
+                    "thumb_url": "${image}",
+                    "ts": "${when}"
+                }
+            ]
+        }
+EOF
+		)"
+
+		httpcode=$(docurl -X POST --data-urlencode "payload=${payload}" "${webhook}")
+		if [ "${httpcode}" = "200" ]; then
+			info "sent rocketchat notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+			sent=$((sent + 1))
+		else
+			error "failed to send rocketchat notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+		fi
+	done
+
+	[ ${sent} -gt 0 ] && return 0
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# alerta sender
+
+send_alerta() {
+	local webhook="${1}" channels="${2}" httpcode sent=0 channel severity resource event payload auth
+
+	[ "${SEND_ALERTA}" != "YES" ] && return 1
+
+	case "${status}" in
+	CRITICAL) severity="critical" ;;
+	WARNING) severity="warning" ;;
+	CLEAR) severity="cleared" ;;
+	*) severity="indeterminate" ;;
+	esac
+
+	if [[ ${chart} == httpcheck* ]]; then
+		resource=$chart
+		event=$name
+	else
+		resource="${host}:${family}"
+		event="${chart}.${name}"
+	fi
+
+	for channel in ${channels}; do
+		payload="$(
+			cat <<EOF
+        {
+            "resource": "${resource}",
+            "event": "${event}",
+            "environment": "${channel}",
+            "severity": "${severity}",
+            "service": ["Netdata"],
+            "group": "Performance",
+            "value": "${value_string}",
+            "text": "${info}",
+            "tags": ["alarm_id:${alarm_id}"],
+            "attributes": {
+                "roles": "${roles}",
+                "name": "${name}",
+                "chart": "${chart}",
+                "family": "${family}",
+                "source": "${src}",
+                "moreInfo": "<a href=\"${goto_url}\">View Netdata</a>"
+            },
+            "origin": "netdata/${host}",
+            "type": "netdataAlarm",
+            "rawData": "${BASH_ARGV[@]}"
+        }
+EOF
+		)"
+
+		if [ -n "${ALERTA_API_KEY}" ]; then
+			auth="Key ${ALERTA_API_KEY}"
+		fi
+
+		httpcode=$(docurl -X POST "${webhook}/alert" -H "Content-Type: application/json" -H "Authorization: $auth" --data "${payload}")
+
+		if [ "${httpcode}" = "200" ] || [ "${httpcode}" = "201" ]; then
+			info "sent alerta notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+			sent=$((sent + 1))
+		elif [ "${httpcode}" = "202" ]; then
+			info "suppressed alerta notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+		else
+			error "failed to send alerta notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+		fi
+	done
+
+	[ ${sent} -gt 0 ] && return 0
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# flock sender
+
+send_flock() {
+	local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+	[ "${SEND_FLOCK}" != "YES" ] && return 1
+
+	case "${status}" in
+	WARNING) color="warning" ;;
+	CRITICAL) color="danger" ;;
+	CLEAR) color="good" ;;
+	*) color="#777777" ;;
+	esac
+
+	for channel in ${channels}; do
+		httpcode=$(docurl -X POST "${webhook}" -H "Content-Type: application/json" -d "{
+            \"sendAs\": {
+                \"name\" : \"netdata on ${host}\",
+                \"profileImage\" : \"${images_base_url}/images/banner-icon-144x144.png\"
+            },
+            \"text\": \"${host} *${status_message}*\",
+            \"timestamp\": \"${when}\",
+            \"attachments\": [
+                {
+                    \"description\": \"${chart} (${family}) - ${info}\",
+                    \"color\": \"${color}\",
+                    \"title\": \"${alarm}\",
+                    \"url\": \"${goto_url}\",
+                    \"text\": \"${info}\",
+                    \"views\": {
+                        \"image\": {
+                            \"original\": { \"src\": \"${image}\", \"width\": 400, \"height\": 400 },
+                            \"thumbnail\": { \"src\": \"${image}\", \"width\": 50, \"height\": 50 },
+                            \"filename\": \"${image}\"
+                            }
+                    }
+                }
+            ]
+        }")
+		if [ "${httpcode}" = "200" ]; then
+			info "sent flock notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+			sent=$((sent + 1))
+		else
+			error "failed to send flock notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+		fi
+	done
+
+	[ ${sent} -gt 0 ] && return 0
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# discord sender
+
+send_discord() {
+	local webhook="${1}/slack" channels="${2}" httpcode sent=0 channel color payload username
+
+	[ "${SEND_DISCORD}" != "YES" ] && return 1
+
+	case "${status}" in
+	WARNING) color="warning" ;;
+	CRITICAL) color="danger" ;;
+	CLEAR) color="good" ;;
+	*) color="#777777" ;;
+	esac
+
+	for channel in ${channels}; do
+		username="netdata on ${host}"
+		[ ${#username} -gt 32 ] && username="${username:0:29}..."
+
+		payload="$(
+			cat <<EOF
+        {
+            "channel": "#${channel}",
+            "username": "${username}",
+            "text": "${host} ${status_message}, \`${chart}\` (_${family}_), *${alarm}*",
+            "icon_url": "${images_base_url}/images/banner-icon-144x144.png",
+            "attachments": [
+                {
+                    "color": "${color}",
+                    "title": "${alarm}",
+                    "title_link": "${goto_url}",
+                    "text": "${info}",
+                    "fields": [
+                        {
+                            "title": "${chart}",
+                            "value": "${family}"
+                        }
+                    ],
+                    "thumb_url": "${image}",
+                    "footer_icon": "${images_base_url}/images/banner-icon-144x144.png",
+                    "footer": "${host}",
+                    "ts": ${when}
+                }
+            ]
+        }
+EOF
+		)"
+
+		httpcode=$(docurl -X POST --data-urlencode "payload=${payload}" "${webhook}")
+		if [ "${httpcode}" = "200" ]; then
+			info "sent discord notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+			sent=$((sent + 1))
+		else
+			error "failed to send discord notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+		fi
+	done
+
+	[ ${sent} -gt 0 ] && return 0
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# fleep sender
+
+send_fleep() {
+	local httpcode sent=0 webhooks="${1}" data message
+	if [ "${SEND_FLEEP}" = "YES" ]; then
+		message="${host} ${status_message}, \`${chart}\` (${family}), *${alarm}*\\n${info}"
+
+		for hook in ${webhooks}; do
+			data="{ "
+			data="${data} 'message': '${message}', "
+			data="${data} 'user': '${FLEEP_SENDER}' "
+			data="${data} }"
+
+			httpcode=$(docurl -X POST --data "${data}" "https://fleep.io/hook/${hook}")
+
+			if [ "${httpcode}" = "200" ]; then
+				info "sent fleep data for: ${host} ${chart}.${name} is ${status} and user '${FLEEP_SENDER}'"
+				sent=$((sent + 1))
+			else
+				error "failed to send fleep data for: ${host} ${chart}.${name} is ${status} and user '${FLEEP_SENDER}' with HTTP error code ${httpcode}."
+			fi
+		done
+
+		[ ${sent} -gt 0 ] && return 0
+	fi
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# Prowl sender
+
+send_prowl() {
+	local httpcode sent=0 data message keys prio=0 alarm_url event
+	if [ "${SEND_PROWL}" = "YES" ]; then
+		message="$(urlencode "${host} ${status_message}, \`${chart}\` (${family}), *${alarm}*\\n${info}")"
+		message="description=${message}"
+		keys="$(urlencode "$(echo "${1}" | tr ' ' ,)")"
+		keys="apikey=${keys}"
+		app="application=Netdata"
+
+		case "${status}" in
+		CRITICAL)
+			prio=2
+			;;
+		WARNING)
+			prio=1
+			;;
+		esac
+		prio="priority=${prio}"
+
+		alarm_url="$(urlencode ${goto_url})"
+		alarm_url="url=${alarm_url}"
+		event="$(urlencode "${host} ${status_message}")"
+		event="event=${event}"
+
+		data="${keys}&${prio}&${alarm_url}&${app}&${event}&${message}"
+
+		httpcode=$(docurl -X POST --data "${data}" "https://api.prowlapp.com/publicapi/add")
+
+		if [ "${httpcode}" = "200" ]; then
+			info "sent prowl data for: ${host} ${chart}.${name} is ${status}"
+			sent=1
+		else
+			error "failed to send prowl data for: ${host} ${chart}.${name} is ${status} with with error code ${httpcode}."
+		fi
+
+		[ ${sent} -gt 0 ] && return 0
+	fi
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# irc sender
+
+send_irc() {
+	local NICKNAME="${1}" REALNAME="${2}" CHANNELS="${3}" NETWORK="${4}" SERVERNAME="${5}" MESSAGE="${6}" sent=0 channel color send_alarm reply_codes error
+
+	if [ "${SEND_IRC}" = "YES" ] && [ -n "${NICKNAME}" ] && [ -n "${REALNAME}" ] && [ -n "${CHANNELS}" ] && [ -n "${NETWORK}" ] && [ -n "${SERVERNAME}" ]; then
+		case "${status}" in
+		WARNING) color="warning" ;;
+		CRITICAL) color="danger" ;;
+		CLEAR) color="good" ;;
+		*) color="#777777" ;;
+		esac
+
+		SNDMESSAGE="${MESSAGE//$'\n'/", "}"
+		for CHANNEL in ${CHANNELS}; do
+			error=0
+			send_alarm=$(echo -e "USER ${NICKNAME} guest ${REALNAME} ${SERVERNAME}\\nNICK ${NICKNAME}\\nJOIN ${CHANNEL}\\nPRIVMSG ${CHANNEL} :${SNDMESSAGE}\\nQUIT\\n" \  | nc "${NETWORK}" 6667)
+			reply_codes=$(echo "${send_alarm}" | cut -d ' ' -f 2 | grep -o '[0-9]*')
+			for code in ${reply_codes}; do
+				if [ "${code}" -ge 400 ] && [ "${code}" -le 599 ]; then
+					error=1
+					break
+				fi
+			done
+
+			if [ "${error}" -eq 0 ]; then
+				info "sent irc notification for: ${host} ${chart}.${name} is ${status} to '${CHANNEL}'"
+				sent=$((sent + 1))
+			else
+				error "failed to send irc notification for: ${host} ${chart}.${name} is ${status} to '${CHANNEL}', with error code ${code}."
+			fi
+		done
+	fi
+
+	[ ${sent} -gt 0 ] && return 0
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# Amazon SNS sender
+
+send_awssns() {
+	local targets="${1}" message='' sent=0 region=''
+	local default_format="${status} on ${host} at ${date}: ${chart} ${value_string}"
+
+	[ "${SEND_AWSSNS}" = "YES" ] || return 1
+
+	message=${AWSSNS_MESSAGE_FORMAT:-${default_format}}
+
+	for target in ${targets}; do
+		# Extract the region from the target ARN.  We need to explicitly specify the region so that it matches up correctly.
+		region="$(echo ${target} | cut -f 4 -d ':')"
+		if ${aws} sns publish --region "${region}" --subject "${host} ${status_message} - ${name//_/ } - ${chart}" --message "${message}" --target-arn ${target} &>/dev/null; then
+			info "sent Amazon SNS notification for: ${host} ${chart}.${name} is ${status} to '${target}'"
+			sent=$((sent + 1))
+		else
+			error "failed to send Amazon SNS notification for: ${host} ${chart}.${name} is ${status} to '${target}'"
+		fi
+	done
+
+	[ ${sent} -gt 0 ] && return 0
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# syslog sender
+
+send_syslog() {
+	local facility=${SYSLOG_FACILITY:-"local6"} level='info' targets="${1}"
+	local priority='' message='' host='' port='' prefix=''
+	local temp1='' temp2=''
+
+	[ "${SEND_SYSLOG}" = "YES" ] || return 1
+
+	if [ "${status}" = "CRITICAL" ]; then
+		level='crit'
+	elif [ "${status}" = "WARNING" ]; then
+		level='warning'
+	fi
+
+	for target in ${targets}; do
+		priority="${facility}.${level}"
+		message=''
+		host=''
+		port=''
+		prefix=''
+		temp1=''
+		temp2=''
+
+		prefix=$(echo ${target} | cut -d '/' -f 2)
+		temp1=$(echo ${target} | cut -d '/' -f 1)
+
+		if [ ${prefix} != ${temp1} ]; then
+			if (echo ${temp1} | grep -q '@'); then
+				temp2=$(echo ${temp1} | cut -d '@' -f 1)
+				host=$(echo ${temp1} | cut -d '@' -f 2)
+
+				if [ ${temp2} != ${host} ]; then
+					priority=${temp2}
+				fi
+
+				port=$(echo ${host} | rev | cut -d ':' -f 1 | rev)
+
+				if (echo ${host} | grep -E -q '\[.*\]'); then
+					if (echo ${port} | grep -q ']'); then
+						port=''
+					else
+						host=$(echo ${host} | rev | cut -d ':' -f 2- | rev)
+					fi
+				else
+					if [ ${port} = ${host} ]; then
+						port=''
+					else
+						host=$(echo ${host} | cut -d ':' -f 1)
+					fi
+				fi
+			else
+				priority=${temp1}
+			fi
+		fi
+
+		message="${prefix} ${status} on ${host} at ${date}: ${chart} ${value_string}"
+
+		if [ ${host} ]; then
+			logger_options="${logger_options} -n ${host}"
+			if [ ${port} ]; then
+				logger_options="${logger_options} -P ${port}"
+			fi
+		fi
+
+		${logger} -p ${priority} ${logger_options} "${message}"
+	done
+
+	return $?
+}
+
+# -----------------------------------------------------------------------------
+# SMS sender
+
+send_sms() {
+	local recipients="${1}" errcode errmessage sent=0
+
+    # Human readable SMS
+    local msg="${host} ${status_message}: ${chart} (${family}), ${alarm}"
+
+    # limit it to 160 characters
+    msg="${msg:0:160}"
+
+	if [ "${SEND_SMS}" = "YES" ] && [ -n "${sendsms}" ] && [ -n "${recipients}" ] && [ -n "${msg}" ]; then
+		# http://api.kavenegar.com/v1/{API-KEY}/sms/send.json
+		for phone in ${recipients}; do
+			errmessage=$($sendsms $phone "$msg" 2>&1)
+			errcode=$?
+			if [ ${errcode} -eq 0 ]; then
+				info "sent smstools3 SMS for: ${host} ${chart}.${name} is ${status} to '${user}'"
+				sent=$((sent + 1))
+			else
+				error "failed to send smstools3 SMS for: ${host} ${chart}.${name} is ${status} to '${user}' with error code ${errcode}: ${errmessage}."
+			fi
+		done
+
+		[ ${sent} -gt 0 ] && return 0
+	fi
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# hangouts sender
+
+send_hangouts() {
+	local rooms="${1}" httpcode sent=0 room color payload webhook
+
+	[ "${SEND_HANGOUTS}" != "YES" ] && return 1
+
+	case "${status}" in
+	WARNING) color="#ffa700" ;;
+	CRITICAL) color="#d62d20" ;;
+	CLEAR) color="#008744" ;;
+	*) color="#777777" ;;
+	esac
+
+	for room in ${rooms}; do
+		if [ -z "${HANGOUTS_WEBHOOK_URI[$room]}" ] ; then
+			info "Can't send Hangouts notification for: ${host} ${chart}.${name} to room ${room}. HANGOUTS_WEBHOOK_URI[$room] not defined"
+		else
+			webhook="${HANGOUTS_WEBHOOK_URI[$room]}"
+			payload="$(
+				cat <<EOF
+				{
+					"cards": [
+						{
+							"header": {
+								"title": "Netdata on ${host}",
+								"imageUrl": "${images_base_url}/images/banner-icon-144x144.png",
+								"imageStyle": "IMAGE"
+							},
+							"sections": [
+								{
+									"header": "<b>${host}</b>",
+									"widgets": [
+										{
+											"keyValue": {
+												"topLabel": "Status Message",
+												"content": "<b>${status_message}</b>",
+												"contentMultiline": "true",
+												"iconUrl": "${image}",
+												"onClick": {
+													"openLink": {
+														"url": "${goto_url}"
+													}
+												}
+											}
+										},
+										{
+											"keyValue": {
+												"topLabel": "${chart} | ${family}",
+												"content": "<font color=${color}>${alarm}</font>",
+												"contentMultiline": "true"
+											}
+										}
+									]
+								},
+								{
+									"widgets": [
+										{
+											"textParagraph": {
+											"text": "<font color=\"#0057e7\">@ ${date}\n<b>${info}</b></font>"
+											}
+										}
+									]
+								},
+								{
+									"widgets": [
+										{
+											"buttons": [
+												{
+													"textButton": {
+														"text": "Go to ${host}",
+														"onClick": {
+															"openLink": {
+																"url": "${goto_url}"
+															}
+														}
+													}
+												}
+											]
+										}
+									]
+								}
+							]
+						}
+					]
+				}
+EOF
+				)"
+
+			httpcode=$(docurl -H "Content-Type: application/json" -X POST -d "${payload}" "${webhook}")
+
+			if [ "${httpcode}" = "200" ]; then
+				info "sent hangouts notification for: ${host} ${chart}.${name} is ${status} to '${room}'"
+				sent=$((sent + 1))
+			else
+				error "failed to send hangouts notification for: ${host} ${chart}.${name} is ${status} to '${room}', with HTTP error code ${httpcode}."
+			fi
+		fi
+	done
+
+	[ ${sent} -gt 0 ] && return 0
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# prepare the content of the notification
+
+# the url to send the user on click
+urlencode "${args_host}" >/dev/null
+url_host="${REPLY}"
+urlencode "${chart}" >/dev/null
+url_chart="${REPLY}"
+urlencode "${family}" >/dev/null
+url_family="${REPLY}"
+urlencode "${name}" >/dev/null
+url_name="${REPLY}"
+
+redirect_params="host=${url_host}&chart=${url_chart}&family=${url_family}&alarm=${url_name}&alarm_unique_id=${unique_id}&alarm_id=${alarm_id}&alarm_event_id=${event_id}&alarm_when=${when}"
+GOTOCLOUD=0
+
+if [ "${NETDATA_REGISTRY_URL}" == "https://registry.my-netdata.io" ]; then
+	if [ -z "${NETDATA_REGISTRY_UNIQUE_ID}" ]; then
+		if [ -f "/var/lib/netdata/registry/netdata.public.unique.id" ]; then
+			NETDATA_REGISTRY_UNIQUE_ID="$(cat "/var/lib/netdata/registry/netdata.public.unique.id")"
+		fi
+	fi
+	if [ -n "${NETDATA_REGISTRY_UNIQUE_ID}" ]; then
+		GOTOCLOUD=1
+	fi
+fi
+
+if [ ${GOTOCLOUD} -eq 0 ]; then
+	goto_url="${NETDATA_REGISTRY_URL}/goto-host-from-alarm.html?${redirect_params}"
+else
+	goto_url="${NETDATA_REGISTRY_CLOUD_BASE_URL}/alarms/redirect?agentID=${NETDATA_REGISTRY_UNIQUE_ID}&${redirect_params}"
+fi
+
+# the severity of the alarm
+severity="${status}"
+
+# the time the alarm was raised
+duration4human ${duration} >/dev/null
+duration_txt="${REPLY}"
+duration4human ${non_clear_duration} >/dev/null
+non_clear_duration_txt="${REPLY}"
+raised_for="(was ${old_status,,} for ${duration_txt})"
+
+# the key status message
+status_message="status unknown"
+
+# the color of the alarm
+color="grey"
+
+# the alarm value
+alarm="${name//_/ } = ${value_string}"
+
+# the image of the alarm
+image="${images_base_url}/images/banner-icon-144x144.png"
+
+# prepare the title based on status
+case "${status}" in
+CRITICAL)
+	image="${images_base_url}/images/alert-128-red.png"
+	status_message="is critical"
+	color="#ca414b"
+	;;
+
+WARNING)
+	image="${images_base_url}/images/alert-128-orange.png"
+	status_message="needs attention"
+	color="#ffc107"
+	;;
+
+CLEAR)
+	image="${images_base_url}/images/check-mark-2-128-green.png"
+	status_message="recovered"
+	color="#77ca6d"
+	;;
+esac
+
+if [ "${status}" = "CLEAR" ]; then
+	severity="Recovered from ${old_status}"
+	if [ ${non_clear_duration} -gt ${duration} ]; then
+		raised_for="(alarm was raised for ${non_clear_duration_txt})"
+	fi
+
+	# don't show the value when the status is CLEAR
+	# for certain alarms, this value might not have any meaning
+	alarm="${name//_/ } ${raised_for}"
+
+elif { [ "${old_status}" = "WARNING" ] && [ "${status}" = "CRITICAL" ]; }; then
+	severity="Escalated to ${status}"
+	if [ ${non_clear_duration} -gt ${duration} ]; then
+		raised_for="(alarm is raised for ${non_clear_duration_txt})"
+	fi
+
+elif { [ "${old_status}" = "CRITICAL" ] && [ "${status}" = "WARNING" ]; }; then
+	severity="Demoted to ${status}"
+	if [ ${non_clear_duration} -gt ${duration} ]; then
+		raised_for="(alarm is raised for ${non_clear_duration_txt})"
+	fi
+
+else
+	raised_for=
+fi
+
+# prepare HTML versions of elements
+info_html=
+[ -n "${info}" ] && info_html=" <small><br/>${info}</small>"
+
+raised_for_html=
+[ -n "${raised_for}" ] && raised_for_html="<br/><small>${raised_for}</small>"
+
+# -----------------------------------------------------------------------------
+# send the slack notification
+
+# slack aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_slack "${SLACK_WEBHOOK_URL}" "${to_slack}"
+SENT_SLACK=$?
+
+# -----------------------------------------------------------------------------
+# send the hangouts notification
+
+# hangouts aggregates posts from the same room
+# so we use "${host} ${status}" as the room, to make them diff
+
+send_hangouts "${to_hangouts}"
+SENT_HANGOUTS=$?
+
+# -----------------------------------------------------------------------------
+# send the Microsoft notification
+
+# Microsoft team aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_msteam "${MSTEAM_WEBHOOK_URL}" "${to_msteam}"
+SENT_MSTEAM=$?
+
+# -----------------------------------------------------------------------------
+# send the rocketchat notification
+
+# rocketchat aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_rocketchat "${ROCKETCHAT_WEBHOOK_URL}" "${to_rocketchat}"
+SENT_ROCKETCHAT=$?
+
+# -----------------------------------------------------------------------------
+# send the alerta notification
+
+# alerta aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_alerta "${ALERTA_WEBHOOK_URL}" "${to_alerta}"
+SENT_ALERTA=$?
+
+# -----------------------------------------------------------------------------
+# send the flock notification
+
+# flock aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_flock "${FLOCK_WEBHOOK_URL}" "${to_flock}"
+SENT_FLOCK=$?
+
+# -----------------------------------------------------------------------------
+# send the discord notification
+
+# discord aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_discord "${DISCORD_WEBHOOK_URL}" "${to_discord}"
+SENT_DISCORD=$?
+
+# -----------------------------------------------------------------------------
+# send the pushover notification
+
+send_pushover "${PUSHOVER_APP_TOKEN}" "${to_pushover}" "${when}" "${goto_url}" "${status}" "${host} ${status_message} - ${name//_/ } - ${chart}" "
+<font color=\"${color}\"><b>${alarm}</b></font>${info_html}<br/>&nbsp;
+<small><b>${chart}</b><br/>Chart<br/>&nbsp;</small>
+<small><b>${family}</b><br/>Family<br/>&nbsp;</small>
+<small><b>${severity}</b><br/>Severity<br/>&nbsp;</small>
+<small><b>${date}${raised_for_html}</b><br/>Time<br/>&nbsp;</small>
+<a href=\"${goto_url}\">View Netdata</a><br/>&nbsp;
+<small><small>The source of this alarm is line ${src}</small></small>
+"
+
+SENT_PUSHOVER=$?
+
+# -----------------------------------------------------------------------------
+# send the pushbullet notification
+
+send_pushbullet "${PUSHBULLET_ACCESS_TOKEN}" "${PUSHBULLET_SOURCE_DEVICE}" "${to_pushbullet}" "${goto_url}" "${host} ${status_message} - ${name//_/ } - ${chart}" "${alarm}\\n
+Severity: ${severity}\\n
+Chart: ${chart}\\n
+Family: ${family}\\n
+${date}\\n
+The source of this alarm is line ${src}"
+
+SENT_PUSHBULLET=$?
+
+# -----------------------------------------------------------------------------
+# send the twilio SMS
+
+send_twilio "${TWILIO_ACCOUNT_SID}" "${TWILIO_ACCOUNT_TOKEN}" "${TWILIO_NUMBER}" "${to_twilio}" "${host} ${status_message} - ${name//_/ } - ${chart}" "${alarm}
+Severity: ${severity}
+Chart: ${chart}
+Family: ${family}
+${info}"
+
+SENT_TWILIO=$?
+
+# -----------------------------------------------------------------------------
+# send the messagebird SMS
+
+send_messagebird "${MESSAGEBIRD_ACCESS_KEY}" "${MESSAGEBIRD_NUMBER}" "${to_messagebird}" "${host} ${status_message} - ${name//_/ } - ${chart}" "${alarm}
+Severity: ${severity}
+Chart: ${chart}
+Family: ${family}
+${info}"
+
+SENT_MESSAGEBIRD=$?
+
+# -----------------------------------------------------------------------------
+# send the kavenegar SMS
+
+send_kavenegar "${KAVENEGAR_API_KEY}" "${KAVENEGAR_SENDER}" "${to_kavenegar}" "${host} ${status_message} - ${name//_/ } - ${chart}" "${alarm}
+Severity: ${severity}
+Chart: ${chart}
+Family: ${family}
+${info}"
+
+SENT_KAVENEGAR=$?
+
+# -----------------------------------------------------------------------------
+# send the telegram.org message
+
+# https://core.telegram.org/bots/api#formatting-options
+send_telegram "${TELEGRAM_BOT_TOKEN}" "${to_telegram}" "${host} ${status_message} - <b>${name//_/ }</b>
+${chart} (${family})
+<a href=\"${goto_url}\">${alarm}</a>
+<i>${info}</i>"
+
+SENT_TELEGRAM=$?
+
+# -----------------------------------------------------------------------------
+# send the kafka message
+
+send_kafka
+SENT_KAFKA=$?
+
+# -----------------------------------------------------------------------------
+# send the pagerduty.com message
+
+send_pd "${to_pd}"
+SENT_PD=$?
+
+# -----------------------------------------------------------------------------
+# send the fleep message
+
+send_fleep "${to_fleep}"
+SENT_FLEEP=$?
+
+# -----------------------------------------------------------------------------
+# send the Prowl message
+
+send_prowl "${to_prowl}"
+SENT_PROWL=$?
+
+# -----------------------------------------------------------------------------
+# send the irc message
+
+send_irc "${IRC_NICKNAME}" "${IRC_REALNAME}" "${to_irc}" "${IRC_NETWORK}" "${host}" "${host} ${status_message} - ${name//_/ } - ${chart} ----- ${alarm}
+Severity: ${severity}
+Chart: ${chart}
+Family: ${family}
+${info}"
+
+SENT_IRC=$?
+
+# -----------------------------------------------------------------------------
+# send the SMS message with smstools3
+
+send_sms "${to_sms}"
+
+SENT_SMS=$?
+
+# -----------------------------------------------------------------------------
+# send the custom message
+
+send_custom() {
+	# is it enabled?
+	[ "${SEND_CUSTOM}" != "YES" ] && return 1
+
+	# do we have any sender?
+	[ -z "${1}" ] && return 1
+
+	# call the custom_sender function
+	custom_sender "${@}"
+}
+
+send_custom "${to_custom}"
+SENT_CUSTOM=$?
+
+# -----------------------------------------------------------------------------
+# send hipchat message
+
+send_hipchat "${HIPCHAT_AUTH_TOKEN}" "${to_hipchat}" " \
+${host} ${status_message}<br/> \
+<b>${alarm}</b> ${info_html}<br/> \
+<b>${chart}</b> (family <b>${family}</b>)<br/> \
+<b>${date}${raised_for_html}</b><br/> \
+<a href=\\\"${goto_url}\\\">View netdata dashboard</a> \
+(source of alarm ${src}) \
+"
+
+SENT_HIPCHAT=$?
+
+# -----------------------------------------------------------------------------
+# send the Amazon SNS message
+
+send_awssns "${to_awssns}"
+
+SENT_AWSSNS=$?
+
+# -----------------------------------------------------------------------------
+# send the syslog message
+
+send_syslog "${to_syslog}"
+
+SENT_SYSLOG=$?
+
+# -----------------------------------------------------------------------------
+# send the email
+
+IFS='' read -r -d '' email_plaintext_part <<EOF
+Content-Type: text/plain; encoding=${EMAIL_CHARSET}
+Content-Disposition: inline
+Content-Transfer-Encoding: 8bit
+
+${host} ${status_message}
+
+${alarm} ${info}
+${raised_for}
+
+Chart   : ${chart}
+Family  : ${family}
+Severity: ${severity}
+URL     : ${goto_url}
+Source  : ${src}
+Date    : ${date}
+Notification generated on ${host}
+
+Evaluated Expression :  ${calc_expression}
+Expression Variables :  ${calc_param_values}
+
+The host has ${total_warnings} WARNING and ${total_critical} CRITICAL alarm(s) raised.
+EOF
+
+if [[ "${EMAIL_PLAINTEXT_ONLY}" == "YES" ]]; then
+
+send_email <<EOF
+To: ${to_email}
+Subject: ${host} ${status_message} - ${name//_/ } - ${chart}
+MIME-Version: 1.0
+Content-Type: multipart/alternative; boundary="multipart-boundary"
+${email_thread_headers}
+
+This is a MIME-encoded multipart message
+
+--multipart-boundary
+${email_plaintext_part}
+--multipart-boundary--
+EOF
+
+else
+
+IFS='' read -r -d '' email_html_part <<EOF
+Content-Type: text/html; encoding=${EMAIL_CHARSET}
+Content-Disposition: inline
+Content-Transfer-Encoding: 8bit
+
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; box-sizing: border-box; font-size: 14px; margin: 0; padding: 0;">
+<body style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 14px; width: 100% !important; min-height: 100%; line-height: 1.6; background: #f6f6f6; margin:0; padding: 0;">
+<table>
+    <tbody>
+    <tr>
+        <td style="vertical-align: top;" valign="top"></td>
+        <td width="700" style="vertical-align: top; display: block !important; max-width: 700px !important; clear: both !important; margin: 0 auto; padding: 0;" valign="top">
+            <div style="max-width: 700px; display: block; margin: 0 auto; padding: 20px;">
+                <table width="100%" cellpadding="0" cellspacing="0" style="background: #fff; border: 1px solid #e9e9e9;">
+                    <tbody>
+                    <tr>
+                        <td bgcolor="#eee" style="padding: 5px 20px 5px 20px; background-color: #eee;">
+                            <div style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 20px; color: #777; font-weight: bold;">netdata notification</div>
+                        </td>
+                    </tr>
+                    <tr>
+                        <td bgcolor="${color}" style="font-size: 16px; vertical-align: top; font-weight: 400; text-align: center; margin: 0; padding: 10px; color: #ffffff; background: ${color} !important; border: 1px solid ${color}; border-top-color: ${color};" align="center" valign="top">
+                            <h1 style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-weight: 400; margin: 0;">${host} ${status_message}</h1>
+                        </td>
+                    </tr>
+                    <tr>
+                        <td style="vertical-align: top;" valign="top">
+                            <div style="margin: 0; padding: 20px; max-width: 700px;">
+                                <table width="100%" cellpadding="0" cellspacing="0" style="max-width:700px">
+                                    <tbody>
+                                    <tr>
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding:0 0 20px;" align="left" valign="top">
+                                            <span>${chart}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Chart</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            <span><b>${alarm}</b>${info_html}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Alarm</span>
+                                        </td>
+                                    </tr>
+                                    <tr>
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            <span>${family}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Family</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            <span>${severity}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Severity</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top"><span>${date}</span>
+                                            <span>${raised_for_html}</span> <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Time</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            <span>${calc_expression}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Evaluated Expression</span>
+                                        </td>
+                                    </tr>
+                                     <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            <span>${calc_param_values}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Expression Variables</span>
+                                        </td>
+                                    </tr>
+                                     <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            The host has ${total_warnings} WARNING and ${total_critical} CRITICAL alarm(s) raised.
+                                         </td>
+                                    </tr>
+
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;">
+                                            <a href="${goto_url}" style="font-size: 14px; color: #ffffff; text-decoration: none; line-height: 1.5; font-weight: bold; text-align: center; display: inline-block; text-transform: capitalize; background: #35568d; border-width: 1px; border-style: solid; border-color: #2b4c86; margin: 0; padding: 10px 15px;" target="_blank">View Netdata</a>
+                                        </td>
+                                    </tr>
+                                    <tr style="text-align: center; margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 11px; vertical-align: top; margin: 0; padding: 10px 0 0 0; color: #666666;" align="center" valign="bottom">The source of this alarm is line <code>${src}</code><br/>(alarms are configurable, edit this file to adapt the alarm to your needs)
+                                        </td>
+                                    </tr>
+                                    <tr style="text-align: center; margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 12px; vertical-align: top; margin:0; padding: 20px 0 0 0; color: #666666; border-top: 1px solid #f0f0f0;" align="center" valign="bottom">Sent by
+                                            <a href="https://mynetdata.io/" target="_blank">netdata</a>, the real-time performance and health monitoring, on <code>${host}</code>.
+                                        </td>
+                                    </tr>
+                                    </tbody>
+                                </table>
+                            </div>
+                        </td>
+                    </tr>
+                    </tbody>
+                </table>
+            </div>
+        </td>
+    </tr>
+    </tbody>
+</table>
+</body>
+</html>
+EOF
+
+send_email <<EOF
+To: ${to_email}
+Subject: ${host} ${status_message} - ${name//_/ } - ${chart}
+MIME-Version: 1.0
+Content-Type: multipart/alternative; boundary="multipart-boundary"
+${email_thread_headers}
+
+This is a MIME-encoded multipart message
+
+--multipart-boundary
+${email_plaintext_part}
+--multipart-boundary
+${email_html_part}
+--multipart-boundary--
+EOF
+
+fi
+
+SENT_EMAIL=$?
+
+# -----------------------------------------------------------------------------
+# let netdata know
+for state in "${SENT_EMAIL}" \
+	"${SENT_PUSHOVER}" \
+	"${SENT_TELEGRAM}" \
+	"${SENT_SLACK}" \
+	"${SENT_HANGOUTS}" \
+	"${SENT_ROCKETCHAT}" \
+	"${SENT_ALERTA}" \
+	"${SENT_FLOCK}" \
+	"${SENT_DISCORD}" \
+	"${SENT_TWILIO}" \
+	"${SENT_HIPCHAT}" \
+	"${SENT_MESSAGEBIRD}" \
+	"${SENT_KAVENEGAR}" \
+	"${SENT_PUSHBULLET}" \
+	"${SENT_KAFKA}" \
+	"${SENT_PD}" \
+	"${SENT_FLEEP}" \
+	"${SENT_PROWL}" \
+	"${SENT_CUSTOM}" \
+	"${SENT_IRC}" \
+	"${SENT_AWSSNS}" \
+	"${SENT_SYSLOG}" \
+	"${SENT_SMS}" \
+	"${SENT_MSTEAM}"; do
+	if [ "${state}" -eq 0 ]; then
+		# we sent something
+		exit 0
+	fi
+done
+# we did not send anything
+exit 1
diff --git a/health/notifications/alarm-notify.sh.in b/health/notifications/alarm-notify.sh.in
index b56c67e6..0f435083 100755
--- a/health/notifications/alarm-notify.sh.in
+++ b/health/notifications/alarm-notify.sh.in
@@ -29,6 +29,7 @@
 #  - hipchat notifications by @ktsaou #1561
 #  - fleep notifications by @Ferroin
 #  - prowlapp.com notifications by @Ferroin
+#  - irc notifications by @manosf
 #  - custom notifications by @ktsaou
 #  - syslog messages by @Ferroin
 #  - Microsoft Team notification by @tioumen
@@ -164,6 +165,7 @@ custom
 msteam
 kavenegar
 prowl
+irc
 awssns
 rocketchat
 sms
@@ -1626,9 +1628,10 @@ send_irc() {
 		*) color="#777777" ;;
 		esac
 
+		SNDMESSAGE="${MESSAGE//$'\n'/", "}"
 		for CHANNEL in ${CHANNELS}; do
 			error=0
-			send_alarm=$(echo -e "USER ${NICKNAME} guest ${REALNAME} ${SERVERNAME}\\nNICK ${NICKNAME}\\nJOIN ${CHANNEL}\\nPRIVMSG ${CHANNEL} :${MESSAGE}\\nQUIT\\n" \  | nc "${NETWORK}" 6667)
+			send_alarm=$(echo -e "USER ${NICKNAME} guest ${REALNAME} ${SERVERNAME}\\nNICK ${NICKNAME}\\nJOIN ${CHANNEL}\\nPRIVMSG ${CHANNEL} :${SNDMESSAGE}\\nQUIT\\n" \  | nc "${NETWORK}" 6667)
 			reply_codes=$(echo "${send_alarm}" | cut -d ' ' -f 2 | grep -o '[0-9]*')
 			for code in ${reply_codes}; do
 				if [ "${code}" -ge 400 ] && [ "${code}" -le 599 ]; then
diff --git a/health/notifications/alerta/Makefile.inc b/health/notifications/alerta/Makefile.inc
index 32fa0894..10f26b0c 100644
--- a/health/notifications/alerta/Makefile.inc
+++ b/health/notifications/alerta/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	alerta/README.md \
-	alerta/Makefile.inc \
-	$(NULL)
+    alerta/README.md \
+    alerta/Makefile.inc \
+    $(NULL)
 
diff --git a/health/notifications/awssns/Makefile.inc b/health/notifications/awssns/Makefile.inc
index 3d8e58ff..ee86f4bc 100644
--- a/health/notifications/awssns/Makefile.inc
+++ b/health/notifications/awssns/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	awssns/README.md \
-	awssns/Makefile.inc \
-	$(NULL)
+    awssns/README.md \
+    awssns/Makefile.inc \
+    $(NULL)
 
diff --git a/health/notifications/custom/Makefile.inc b/health/notifications/custom/Makefile.inc
index ed83b9f5..c64ebda2 100644
--- a/health/notifications/custom/Makefile.inc
+++ b/health/notifications/custom/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	custom/README.md \
-	custom/Makefile.inc \
-	$(NULL)
+    custom/README.md \
+    custom/Makefile.inc \
+    $(NULL)
 
diff --git a/health/notifications/discord/Makefile.inc b/health/notifications/discord/Makefile.inc
index 03d0339a..78de7231 100644
--- a/health/notifications/discord/Makefile.inc
+++ b/health/notifications/discord/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	discord/README.md \
-	discord/Makefile.inc \
-	$(NULL)
+    discord/README.md \
+    discord/Makefile.inc \
+    $(NULL)
 
diff --git a/health/notifications/email/Makefile.inc b/health/notifications/email/Makefile.inc
index 62dd18a6..95dc7cf2 100644
--- a/health/notifications/email/Makefile.inc
+++ b/health/notifications/email/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	email/README.md \
-	email/Makefile.inc \
-	$(NULL)
+    email/README.md \
+    email/Makefile.inc \
+    $(NULL)
 
diff --git a/health/notifications/flock/Makefile.inc b/health/notifications/flock/Makefile.inc
index fbff309a..5bde1619 100644
--- a/health/notifications/flock/Makefile.inc
+++ b/health/notifications/flock/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	flock/README.md \
-	flock/Makefile.inc \
-	$(NULL)
+    flock/README.md \
+    flock/Makefile.inc \
+    $(NULL)
 
diff --git a/health/notifications/hangouts/Makefile.inc b/health/notifications/hangouts/Makefile.inc
index 835154fe..6ff1dff5 100644
--- a/health/notifications/hangouts/Makefile.inc
+++ b/health/notifications/hangouts/Makefile.inc
@@ -6,6 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	hangouts/README.md \
-	hangouts/Makefile.inc \
-	$(NULL)
+    hangouts/README.md \
+    hangouts/Makefile.inc \
+    $(NULL)
+
diff --git a/health/notifications/health_alarm_notify.conf b/health/notifications/health_alarm_notify.conf
index 955dd25b..5540dfc1 100755
--- a/health/notifications/health_alarm_notify.conf
+++ b/health/notifications/health_alarm_notify.conf
@@ -364,10 +364,7 @@ DEFAULT_RECIPIENT_KAVENEGAR=""
 #------------------------------------------------------------------------------
 # telegram (telegram.org) global notification options
 
-# To get your chat ID send the command /my_id to telegram bot @get_id.
-# Users also need to open a query with the bot (see below).
-
-# note: multiple recipients can be given like this:
+# multiple recipients can be given like this:
 #                  "CHAT_ID_1 CHAT_ID_2 ..."
 
 # enable/disable sending telegram messages
@@ -377,7 +374,10 @@ SEND_TELEGRAM="YES"
 # Without it, netdata cannot send telegram messages.
 TELEGRAM_BOT_TOKEN=""
 
-# If a role's recipients are not configured, a message will be send to
+# To get your chat ID send the command /getid to telegram bot @myidbot
+# (https://t.me/myidbot). Each user also needs to open a conversation with the
+# bot that will be sending notifications.
+# If a role's recipients are not configured, a message will be sent to
 # this chat id (empty = do not send a notification for unconfigured roles):
 DEFAULT_RECIPIENT_TELEGRAM=""
 
diff --git a/health/notifications/irc/Makefile.inc b/health/notifications/irc/Makefile.inc
index 23be7210..1a68f657 100644
--- a/health/notifications/irc/Makefile.inc
+++ b/health/notifications/irc/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	irc/README.md \
-	irc/Makefile.inc \
-	$(NULL)
+    irc/README.md \
+    irc/Makefile.inc \
+    $(NULL)
 
diff --git a/health/notifications/kavenegar/Makefile.inc b/health/notifications/kavenegar/Makefile.inc
index 6a17c348..b98e7941 100644
--- a/health/notifications/kavenegar/Makefile.inc
+++ b/health/notifications/kavenegar/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	kavenegar/README.md \
-	kavenegar/Makefile.inc \
-	$(NULL)
+    kavenegar/README.md \
+    kavenegar/Makefile.inc \
+    $(NULL)
 
diff --git a/health/notifications/messagebird/Makefile.inc b/health/notifications/messagebird/Makefile.inc
index 8132fecc..f8d23322 100644
--- a/health/notifications/messagebird/Makefile.inc
+++ b/health/notifications/messagebird/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	messagebird/README.md \
-	messagebird/Makefile.inc \
-	$(NULL)
+    messagebird/README.md \
+    messagebird/Makefile.inc \
+    $(NULL)
 
diff --git a/health/notifications/pagerduty/Makefile.inc b/health/notifications/pagerduty/Makefile.inc
index 6012d20e..ee9b0919 100644
--- a/health/notifications/pagerduty/Makefile.inc
+++ b/health/notifications/pagerduty/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	pagerduty/README.md \
-	pagerduty/Makefile.inc \
-	$(NULL)
+    pagerduty/README.md \
+    pagerduty/Makefile.inc \
+    $(NULL)
 
diff --git a/health/notifications/prowl/Makefile.inc b/health/notifications/prowl/Makefile.inc
deleted file mode 100644
index 08e4c2e5..00000000
--- a/health/notifications/prowl/Makefile.inc
+++ /dev/null
@@ -1,12 +0,0 @@
-# SPDX-License-Identifier: GPL-3.0-or-later
-
-# THIS IS NOT A COMPLETE Makefile
-# IT IS INCLUDED BY ITS PARENT'S Makefile.am
-# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
-
-# install these files
-dist_noinst_DATA += \
-	prowl/README.md \
-	prowl/Makefile.inc \
-	$(NULL)
-
diff --git a/health/notifications/prowl/README.md b/health/notifications/prowl/README.md
deleted file mode 100644
index 1f060edc..00000000
--- a/health/notifications/prowl/README.md
+++ /dev/null
@@ -1,22 +0,0 @@
-# prowl
-
-(Prowl)[1] is a push notification service for iOS devices.  Netdata
-supprots delivering notifications to iOS devices through Prowl.
-
-Because of how Netdata integrates with Prowl, there is a hard limit of
-at most 1000 notifications per hour (starting from the first notification
-sent).  Any alerts beyond the first thousand in an hour will be dropped.
-
-Warning messages will be sent with the 'High' priority, critical messages
-will be sent with the 'Emergency' priority, and all other messages will
-be sent with the normal priority.  Opening the notification's associated
-URL will take you to the Netdata dashboard of the system that issued
-the alert, directly to the chart that it triggered on.
-
-## configuration
-
-To use this, you will need a Prowl API key, which can be rquested through
-the Prowl website after registering.
-
-Once you have an API key, simply specify that as a recipient for Prowl
-notifications.
diff --git a/health/notifications/pushbullet/Makefile.inc b/health/notifications/pushbullet/Makefile.inc
index 693a0ffb..d3a9459e 100644
--- a/health/notifications/pushbullet/Makefile.inc
+++ b/health/notifications/pushbullet/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	pushbullet/README.md \
-	pushbullet/Makefile.inc \
-	$(NULL)
+    pushbullet/README.md \
+    pushbullet/Makefile.inc \
+    $(NULL)
 
diff --git a/health/notifications/pushover/Makefile.inc b/health/notifications/pushover/Makefile.inc
index 926ac7c3..9b703a14 100644
--- a/health/notifications/pushover/Makefile.inc
+++ b/health/notifications/pushover/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	pushover/README.md \
-	pushover/Makefile.inc \
-	$(NULL)
+    pushover/README.md \
+    pushover/Makefile.inc \
+    $(NULL)
 
diff --git a/health/notifications/rocketchat/Makefile.inc b/health/notifications/rocketchat/Makefile.inc
index a6fc5d57..58f210b6 100644
--- a/health/notifications/rocketchat/Makefile.inc
+++ b/health/notifications/rocketchat/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	rocketchat/README.md \
-	rocketchat/Makefile.inc \
-	$(NULL)
+    rocketchat/README.md \
+    rocketchat/Makefile.inc \
+    $(NULL)
 
diff --git a/health/notifications/slack/Makefile.inc b/health/notifications/slack/Makefile.inc
index 955a8c7a..043bfaf0 100644
--- a/health/notifications/slack/Makefile.inc
+++ b/health/notifications/slack/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	slack/README.md \
-	slack/Makefile.inc \
-	$(NULL)
+    slack/README.md \
+    slack/Makefile.inc \
+    $(NULL)
 
diff --git a/health/notifications/smstools3/Makefile.inc b/health/notifications/smstools3/Makefile.inc
index b2d424ea..4764b9eb 100644
--- a/health/notifications/smstools3/Makefile.inc
+++ b/health/notifications/smstools3/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	smstools3/README.md \
-	smstools3/Makefile.inc \
-	$(NULL)
+    smstools3/README.md \
+    smstools3/Makefile.inc \
+    $(NULL)
 
diff --git a/health/notifications/syslog/Makefile.inc b/health/notifications/syslog/Makefile.inc
index 1792b9d9..94a8acc3 100644
--- a/health/notifications/syslog/Makefile.inc
+++ b/health/notifications/syslog/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	syslog/README.md \
-	syslog/Makefile.inc \
-	$(NULL)
+    syslog/README.md \
+    syslog/Makefile.inc \
+    $(NULL)
 
diff --git a/health/notifications/telegram/Makefile.inc b/health/notifications/telegram/Makefile.inc
index 003996ba..ffca0718 100644
--- a/health/notifications/telegram/Makefile.inc
+++ b/health/notifications/telegram/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	telegram/README.md \
-	telegram/Makefile.inc \
-	$(NULL)
+    telegram/README.md \
+    telegram/Makefile.inc \
+    $(NULL)
 
diff --git a/health/notifications/telegram/README.md b/health/notifications/telegram/README.md
index 981030ef..45a2beaa 100644
--- a/health/notifications/telegram/README.md
+++ b/health/notifications/telegram/README.md
@@ -2,20 +2,39 @@
 
 [Telegram](https://telegram.org/) is a messaging app with a focus on speed and security, it’s super-fast, simple and free. You can use Telegram on all your devices at the same time — your messages sync seamlessly across any number of your phones, tablets or computers.
 
-With Telegram, you can send messages, photos, videos and files of any type (doc, zip, mp3, etc), as well as create groups for up to 30,000 people or channels for broadcasting to unlimited audiences. You can write to your phone contacts and find people by their usernames. As a result, Telegram is like SMS and email combined — and can take care of all your personal or business messaging needs.
+With Telegram, you can send messages, photos, videos and files of any type (doc, zip, mp3, etc), as well as create groups for up to 100,000 people or channels for broadcasting to unlimited audiences. You can write to your phone contacts and find people by their usernames. As a result, Telegram is like SMS and email combined — and can take care of all your personal or business messaging needs.
 
 Netdata will send warning messages without vibration.
 
-You need:
+You need to:
 
-1.  A bot token. To get one, contact the [@BotFather](https://t.me/BotFather) bot and send the command `/newbot`. Follow the instructions.
-2.  A chat id for every chat you want to send messages to. Contact the [@myidbot](https://t.me/myidbot) bot and send the command `/getid` to get your personal chat id or invite him into a group and issue the same command to get the group chat id.
-3.  Start a conversation with your bot or invite him into a group you want to sent messages to.
+1.  Get a bot token. To get one, contact the [@BotFather](https://t.me/BotFather) bot and send the command `/newbot`. Follow the instructions.
+2.  Start a conversation with your bot or invite it into a group where you want it to send messages.
+3.  Find the chat ID for every chat you want to send messages to. Contact the [@myidbot](https://t.me/myidbot) bot and send the `/getid` command to get your personal chat ID or invite it into a group and use the `/getgroupid` command to get the group chat ID. Group IDs start with a hyphen, supergroup IDs start with `-100`.  
+    Alternatively, you can get the chat ID directly from the bot API. Send *your* bot a command in the chat you want to use, then check `https://api.telegram.org/bot{YourBotToken}/getUpdates`, eg.  `https://api.telegram.org/bot111122223:7OpFlFFRzRBbrUUmIjj5HF9Ox2pYJZy5/getUpdates`
 
-See slack for configuration.
+```
+SEND_TELEGRAM="YES"
+TELEGRAM_BOT_TOKEN="111122223:7OpFlFFRzRBbrUUmIjj5HF9Ox2pYJZy5"
+DEFAULT_RECIPIENT_TELEGRAM="-100233335555"
+```
+
+You can define multiple recipients like this: `"-100311112222 212341234|critical"`.
+This example will send:
+
+-   All alerts to the group with ID -100311112222
+-   Critical alerts to the user with ID 212341234
+
+You can give different recipients per **role** using these (in the same file):
+
+```
+role_recipients_telegram[sysadmin]="212341234"
+role_recipients_telegram[dba]="-1004444333321"
+role_recipients_telegram[webmaster]="49999333322 -1009999222255"
+```
 
 Telegram messages look like this:
 
-![image](https://fb.hash.works/ytl/preview.jpg)
+![Netdata notifications via Telegram](https://user-images.githubusercontent.com/1153921/66612223-f07dfb80-eb75-11e9-976f-5734ffd93ecd.png)
 
 [![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Ftelegram%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/twilio/Makefile.inc b/health/notifications/twilio/Makefile.inc
index 5bd00a21..0f2d8d8a 100644
--- a/health/notifications/twilio/Makefile.inc
+++ b/health/notifications/twilio/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	twilio/README.md \
-	twilio/Makefile.inc \
-	$(NULL)
+    twilio/README.md \
+    twilio/Makefile.inc \
+    $(NULL)
 
diff --git a/health/notifications/web/Makefile.inc b/health/notifications/web/Makefile.inc
index 89082431..b564d83d 100644
--- a/health/notifications/web/Makefile.inc
+++ b/health/notifications/web/Makefile.inc
@@ -6,7 +6,7 @@
 
 # install these files
 dist_noinst_DATA += \
-	web/README.md \
-	web/Makefile.inc \
-	$(NULL)
+    web/README.md \
+    web/Makefile.inc \
+    $(NULL)