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.
Microsoft Outlook (Desktop)★★★☆☆I won’t say I’ve never liked Outlook, because the macOS version has been pretty decent for a while now (if a bit of a resource hog), but the Windows versions have always been awkward, cluttered, and quirky.
Move Email Archives to a New AccountThunderbird, Vivaldi, Apple Mail and Outlook can move messages from one IMAP account to another. Just drag and drop! But Gmail makes it a bit more complicated.