@thunderbird @alecaddd I returned to Thunderbird last year after thinking of doing it for a long time. I like it! Now on macOS but going to use it on Linux instead/also. Regarding release frequency, a thought that in Linux I prefer to install from the preository (deb), so the releases to me will be dependent also on releases by the maintainers there (in my case currently Linux Mint or eventually Mint LMDE). Good luck with the future work on Thunderbird!
@thunderbird @alecaddd
To me, as an end user, Thunderbird is a continuation (or maybe a fork) of Netscape mail. Is that a correct description?
I used Netscape mail both at home on Windows, and at work on my Sun UNIX station (and not unlikely also on Windows).