The last I heard from Thunderbird in 2018, the story was Mozilla making preparations to divest themselves from the project and spin it off to "the community" (a.k.a. Apache graveyard). This post makes it sound like the Thunderbird team has been growing within Mozilla during 2018, and is targeting another 75% headcount increase in 2019. I mean, that's awesome, as someone who wants there to be a viable desktop email cl…
I was once told by a Mozilla policy person in DC that Thunderbird was outdated and people should use webmail. They liked Gmail better and didn't see the point of using an IMAP client. It was a weird conversation. I understood it was just their personal opinion, but finding myself advocating for Thunderbird against someone who works for Mozilla was a little strange. My take away was that Mozilla doesn't really know wh…
In terms of who fit where, a few of the people at the head of the Mozilla Foundation were definitely strongly supportive, but I think most of the upper-tier management levels tended to be against Thunderbird as too much of a distraction from fixing issues [1]. This resulted in a lot of mixed messaging about how much Mozilla was or was not supporting Thunderbird. By the time you get down to most of the development staff, there was usually a desire to be kind and helpful towards Thunderbird but utter confusion as to whether or not they could be so due to the aforementioned mixed messaging.
[1] I'd argue that this was strongly short-sighted. To me, Mozilla deciding to ultimately screw over embedding, and a lot of the issues with Thunderbird would have been solved with a big push to a new, stable embedding. I even made arguments to that affect nearly a decade ago, but to no avail...