Messenger & Notifier for Facebook™ by Glin, Elen

Messenger & Notifier for Facebook™ provides an easy access to Messenger page and notifies you of all new messages (via Badge icon text).

Note 1: Messenger is trademark of Facebook Inc. Messenger & Notifier for Facebook™ is an unofficial addon and does NOT belong or relate to the official Facebook/Messenger website or app at all. This Addon is just a fan project; and is developed and maintained independently by its author.

Some key features:
1. A comprehensive Messenger client right in your Firefox's browser toolbar.
2. Notify you every time something happens on Messenger.com within the people you follow via badge icon text.
3. Features all Messenger.com functions in a customizable panel (see Options page).
4. Options page has few settings to adjust including badge icon text color.

Note 2: after installing the addon and before opening the panel (toolbar popup) please log-in to messenger.com via a Browser Tab. For some reason, the log-in page does NOT work from toolbar-panel.

Note 3: in order to submit bugs, please go to the addon's Homepage and fill the Bug report form.