I’m sorry, I just wanted to set up my university’s email on Thunderbird for Android (already working on desktop). Turns out Microsoft knows which app is using IMAP (via user agent?) and needed approval for Thunderbird for Android to access my data, which only the organization admin can grant. There was a form for me to justify my request and I got a little carried away talking about Mozilla being trustworthy and the costly RAM Outlook is wasting. I’m sorry if my rather long infodump resulted in overloading the service for everyone :(