@randyridenour @jameshowell @greg @pymander No kidding! It took me forever to get the #O365 auth flow worked out, but #pizauth worked wonders with #mu4e.
Granted, I don't use email with or via #emacs, as I don't yet quite trust I won't wind up deleting everything on the server side. Plus, I have not yet sorted out the whole "everybody in the organization uses outlook calendar".