Thunderbird addon: FireTray

If you're using Thunderbird on Linux, FireTray should be one of the must addons to use.

At least for me, as I have previous Outlook experience, following was missing in the default Thunderbird features:

• minimize to system tray on main window close
• show unread messages count in system tray

The first one, I used to solve with MinimizeToTray revived addon, however FireTray does for me both.

The only disadvantage for some I guess might be that FireTray seems to be supported on Linux only. However that's perfectly fine with my environment.