We announced at Ignite that we are actively working on bringing dynamic plus aliases to Office 365.
To get around existing usage, the plan is for an opt-in setting. Our ETA is to have this available for all customers by the third quarter of 2020.
I will keep you updated in Uservoice on our progress.
An error occurred while saving the commentAnonymous commented
This is totally unacceptable. Sadly, our alumni association decided they didn't want to pay in-house services anymore/and or in-house did not want to deal with us so we were forcefully migrated to O365. Now what am I supposed to do with all of the e-mail addresses that have been out in the wild? I don't even know what all of them are. In most cases it fails silently to the sender as well as the recipient, to make the problem even worse!