Outlook ? Lol. In 2 years-time Outlook will only connect to MS365 and that's it. You're betting MS will switch to JMAP ? Lol again.
P.S. ("New" Outlook already only connects to MS365 servers and then stores your credentials and data on Azure, while they proxy to your actual IMAP/SMTP server )
P.S. ("New" Outlook already only connects to MS365 servers and then stores your credentials and data on Azure, while they proxy to your actual IMAP/SMTP server )