One of those semi on topic comments about JMAP adoption: I’m still wishing for more providers implementing JMAP :(
An upcoming one is Thundermail, which will be based on Stalwart! A big win for JMAP, especially with Thunderbird planning to implement it. I hope there are some killer features, the platform control will most likely drive adoption.
Still, I would much prefer keeping my current provider (which doesn’t support JMAP). I don’t want to host my own mail, so I’m left wishing for an IMAP <-> JMAP bridge. I’m probably okay hosting stalwart on my infrastructure (still making it a critical component of me receiving e-mail, but I could easily fall back in the case of downtime... a compromise) mirroring my entire inbox. If this was easy to do, I might be developing a JMAP client (or at least toying around with it).