Outlook is the most powerful desktop mail client bar none but on mobile it matters less, unless something changed I'm pretty sure nothing is stopping you from using other clients. As of writing I have no issues fetching via POP3 emails from my old hotmail address.
Am I missing something here because I don't understand how Microsoft could actively block IMAP or POP3 fetching, do Outlook/Office 365 users use some kind of proprietary mail delivery system for intra Office 365 users/Office 365 apps? It must be because if they are actually blocking IMAP/POP they are basically going against the whole purpose of that standard, wouldn't put it past them though.
More so, does this only effect people using the Outlook clients or the entire Microsoft suite of solutions like Outlook.com web based mail and all.
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