Thunderbird icon is missing in system tray bar in Ubuntu 18.04

Question

In Ubuntu 16.04 I had a Thunderbird icon in tray bar with unread messages but there isn't in Ubuntu 18.04.

Is there a chance to have it again?

Answer 1

Try Birdtray (https://github.com/gyunaev/birdtray)

Install on Ubuntu 18.04:

$ sudo add-apt-repository ppa:linuxuprising/apps
$ sudo apt install birdtray

Answer 2

If you are using the desktop file from Mozilla I would suggest checking that file (typically in /usr/local/share/applications) to see if the Icon= property is pointing to the correct path.

In my case, I had installed Thunderbird to a different location than what is in that file by default and had to update the icon path to point to that location.