Birdtray is a system tray icon for Thunderbird, which shows the unread email count, with some extra features.
The application has stopped working a while back—it no longer shows the unread email count with newer Thunderbird versions (both the latest Thunderbird 102.* stable and the latest beta—112 at the time I'm writing this article), and it doesn't work properly on Wayland either. I have updated the Linux Uprising Apps PPA for Ubuntu and derivatives (and Linux distributions based on it, like Linux Mint, Pop!_OS, etc.) with fixes/workarounds for these issues, and I'll also explain what I did so you can replicate this on other Linux distributions if you want to use Birdtray.
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Originally posted on Linux Uprising Blog.
