@jwz It is a frustrating affair.
I have been thinking a lot about how Thunderbird is reconquering mind- and marketshare with the desktop version and the K-9 Mail-based Thunderbird for Android.
I can hope it will not be polluted with AI, but that seems unlikely in the long run.
@mjj I don't know anything about what's going on technically with Thunderbird these days, but for years they've been playing word-games where they pretend to be a "Mozilla" project when it suits them and utterly independent when the press is going the other way.
"We're a part of Mozilla, not Mozilla or Mozilla or Mozilla" is a thing that they say and it does not inspire confidence, because either it's intentionally deceptive or it's just comically bad messaging, and neither are great.