# email You need a working `sendmail` command for email alerts to work. Almost all MTAs provide a `sendmail` interface. netdata sends all emails as user `netdata`, so make sure your `sendmail` works for local users. email notifications look like this: ![image](https://cloud.githubusercontent.com/assets/2662304/18407294/e9218c68-7714-11e6-8739-e4dd8a498252.png) ## configuration To edit `health_alarm_notify.conf` on your system run `/etc/netdata/edit-config health_alarm_notify.conf`. You can configure recipients in [`/etc/netdata/health_alarm_notify.conf`](https://github.com/netdata/netdata/blob/99d44b7d0c4e006b11318a28ba4a7e7d3f9b3bae/conf.d/health_alarm_notify.conf#L101). You can also configure per role recipients [in the same file, a few lines below](https://github.com/netdata/netdata/blob/99d44b7d0c4e006b11318a28ba4a7e7d3f9b3bae/conf.d/health_alarm_notify.conf#L313). Changes to this file do not require netdata restart. You can test your configuration by issuing the commands: ```sh # become user netdata sudo su -s /bin/bash netdata # send a test alarm /usr/libexec/netdata/plugins.d/alarm-notify.sh test [ROLE] ``` Where `[ROLE]` is the role you want to test. The default (if you don't give a `[ROLE]`) is `sysadmin`. Note that in versions before 1.16, the plugins.d directory may be installed in a different location in certain OSs (e.g. under `/usr/lib/netdata`). You can always find the location of the alarm-notify.sh script in `netdata.conf`. [![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%2Femail%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()