Can’t change email address, says “taken” even on own domain.

I’ve tried changing my accounts email, even to one that’s tied to my own website domain (so, [email protected]) and no matter what it always responds “email address is taken.”

Is it because you block any sub domain that’s not @gmail.com or something to prevent those disposable ones?

I own my own domain and I used an email address at my own domain to register here and it works fine.  I also changed my email address for CAG a couple of years ago from one personal domain to another, no problem here.  Just a data point for you.

No, we allow private domains.  Can you email me cheapyd/gmail with the info?