I recently started at a company that uses exchange for email, and enforces that you use the exchange connectors. This means no IMAP or POP; only MAPI and EWS. I have tried giving it a fair shot that past few months, but I am fairly frustrated. It’s actually not entirely outlook’s fault, but its a large part.

Problem number one is a legacy problem. One email can only exist in one folder. This is great at small scale, and is far less confusing when you “delete” a message, however when you’re getting 500+ emails a day multiple views is a plus.