Have you looked at the Email app usage report in the M365 admin center? It will give you a breakdown of each client your users are leveraging, and you can export it directly from the portal.
How can I export a list of people that only use Outlook Web?
Muneer Jahangeer
346
Reputation points
We have assigned E3 licences to all users, however, a small number of users continue to rely only on Outlook Web.. I'm looking for a method to export a list of users that only use Outlook Web so that I can revoke the E3 licence and simply give the basic licence.
Please advise on how to export this list from the 365 admin portal.