As a service outlook (microsoft mail) sucks, as a web service their page sucks andnisnpoorly laid out and optimised and the new desktop client is atrocious.
They made me change from hotmail outlook, created a hotmail folder for under the new outlook and now I dont get notification for that address on the outlook app. If something gets marked as spam that isnt, marking it not spam sends it to the outlook inbox regardless of intended destination. If I reply to a mail it prioritises outlook despite the mail being sent to hotmail. As a result I cant log into shared files that people gave access to one but not the other.