
https://www.thunderbird.net/en-US/thunderbird/144.0/releasenotes/
Thunderbird 138.0.2 fixes:

https://www.thunderbird.net/en-US/thunderbird/138.0.2/releasenotes/

What is fixed:
“It’s basically a complete redesign of how you add accounts (like email, calendars, etc.) in Thunderbird. The old setup system worked, but it looked a bit dated, could be confusing with its tab-based approach (easy to accidentally close!), and wasn’t very consistent across different account types.
The Account Hub aims to fix all that. It provides a single, unified, modern-looking wizard inside a pop-up window (modal) to guide you through setup. For brand new users, this modal will guide them without letting them get lost before their first account is ready.”


New features
Changes
https://www.thunderbird.net/en-US/thunderbird/136.0/releasenotes/
> hg version
Mercurial Distributed SCM (version 6.9)
(see https://mercurial-scm.org for more information)
Copyright (C) 2005-2024 Olivia Mackall and others
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.> ls -l
total 16
-rwxr-xr-x 1 chris chris 16025 Jan 17 18:13 bootstrap.py
drwxr-xr-x 1 chris chris 2264 Jan 17 18:14 mozilla-unified
The whole building process lasted approximately 8 minutes on my AMD Ryzen 9 7950X3D 16-Core Processor and required 30.1 GiB (32,355,790,419), 1,401,719 files, 138,437 sub-folders



More details at https://developer.thunderbird.net/thunderbird-development/building-thunderbird
“On December 7, 2004, Thunderbird 1.0 was released.”

Finally …

After 24 years, bug report finally gets fixed …
“The missing interface capability, reported back on Friday, November 12, 1999, was closed on Monday, July 22. Those using Thunderbird with applicable Linux desktops should henceforth see an appropriate system tray notification upon receipt of new mail.”


Original bug report from 12/11/1999 … lol

https://bugzilla.mozilla.org/show_bug.cgi?id=18732
https://www.theregister.com/2024/07/22/mozilla_thunderbird_ffix/
Currently on Thunderbird 130 Beta 1

