Microsoft accounts not really working in mail app

[CLMA31]

@Keto

Exchange ActiveSync update

As you may know, Microsoft has ended support for clients using the older Exchange ActiveSync protocols, and the roll-out of that change may already have affected some of you.

Work on updating our account integration to EAS 16.1 protocol has gone well. But there are
still some issues, at least in the calendar synchronization, that we are trying to iron out.

So it did not make it yet to this release, but target is to have it out in a week or two.

From: [Release notes] Tampella 5.0.0.76 - Early Access

Might be reason for the problems, IIRC Microsoft ended the support end of February