

Looks cool, although all of the examples are things I’d just do quickly once I notice it needs doing and I believe planning those might increase the work load.
But I can see a use-case for other tasks, those that I tend to forget. Might give it a try. :)
I can’t recommend Stalwart enough.
It also does CalDAV and CardDAV and some other things… But even JMAP, which is like IMAP, but modern and not as weird.
Ltt.rs supports it on Android, it’s a lot faster and works well. Author is the same as for Conversations, THE Android XMPP client.
Stalwart is simple to set up and works reliably.