As I was already complaining about #WUR I can add another nice episode from their IT:
As some of you might know, @thunderbird added native support for exchange. I immediately wanted to connect my uni-email and get rid of my wonky outlook-brave-webapp.
Of course, it did no go as expected: an error message told me that admin approval is needed.
So far so good, let's ask IT if they could change this, as thunderbird is the e-mail-clients with the oldest and best track record you could possibly have.

Reply from them: "We cannot provide access because we don't know what is done with the data gathered from your Office365 Account. You will need to use Microsoft Outlook."