[snthd]

Would JMAP not be a better focus both in general, and to attract those same users?

https://github.com/thundernest/k-9/issues/3272

[commandersaki]

There’s only one significant mail provider that supports JMAP.

[zahllos]

...and it must also be said that the selection of client software that supports it is somewhat limited. For this discussion, Thunderbird does not. I'd also add that some fairly major providers, e.g. anything based on MS Exchange, and Google's Android client, do their own thing (e.g. ActiveSync).

For myself I'm aware of a bunch of bugs in Thunderbird affecting my experience and I'd rather these were fixed first.

[w-hn]

And in larger scheme of things that provider is anything but significant.