Microsoft Outlook (Android)
It works. More stable than the desktop version. Handles mail, calendar and contacts, offers the focused/other inbox view.
Outlook tries to keep you using Microsoft’s apps as much as possible. It tries to get you to install Edge for opening links. It keeps its calendar and contacts to itself instead of sharing with the system. And of course it wants you to add your other email accounts and use Outlook for them instead of something else.
On the other hand, if you’re using Outlook to access your work email on your otherwise personal phone, that’s actually kind of convenient for keeping them separate.