Microsoft Edge★★☆☆☆Once you turn off all the Microsoft specials, it feels usable again – but then, it’s just another Chromium skin.
Microsoft Outlook (Android)★★★★☆It works. More stable than the desktop version. Handles mail, calendar and contacts, offers the focused/other inbox view. Tries to keep you in Microsoft’s apps. OK for work, wouldn’t use it for personal mail.
Windows 10 Mail and Calendar★★★☆☆Not a bad email client. Snappy, works with multiple accounts. Some issues with Nextcloud calendar and contacts. Of course it’s being discontinued.