1 files changed, 19 insertions, 0 deletions
diff --git a/comm/mail/components/unifiedtoolbar/content/items/addons-button.mjs b/comm/mail/components/unifiedtoolbar/content/items/addons-button.mjs
new file mode 100644
index 0000000000..593513cd35
--- /dev/null
+++ b/comm/mail/components/unifiedtoolbar/content/items/addons-button.mjs
@@ -0,0 +1,19 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import { UnifiedToolbarButton } from "chrome://messenger/content/unifiedtoolbar/unified-toolbar-button.mjs";
+
+/**
+ * Unified toolbar button that opens the add-ons manager.
+ */
+class AddonsButton extends UnifiedToolbarButton {
+  handleClick = event => {
+    window.openAddonsMgr();
+    event.preventDefault();
+    event.stopPropagation();
+  };
+}
+customElements.define("addons-button", AddonsButton, {
+  extends: "button",
+});