I just sent an all-user email and received a couple bounces from gmail and other addresses saying the account did not exist. I'm guessing some people have their incoming emails forwarded to gmail or hotmail or whatever. How do I find the users to remove the forwarding? I tried the Export All users to CSV and it includes all kinds of info, but not their forwarding address.

I found this thread from 2015, which was advanced to being a Proposed Idea. Did it ever get added?

Thanks