The first email channel creation was a breeze. I created an email account and then I configured my new channel without problems.
When I created a second email account, I started having issues.
At the beginning the verification of my new email account failed saying that there was no email listener. I checked and I couldn't actually see any listener with the name of my second email account. So I created a new email listener using the email wizard. Now the verification works fine but when I save my new email channel I receive the error: " Email account already used"
I tried to trace while I saved but I can't see anything in the trace (not an expert in this though).
I tried to delete my second email account and recreate it but I have the same exact behaviour. I even tried to delete, reboot and recreate, same situation.
I tried a few times deleting and recreating email account without any luck.
After your last response I created a new email account with a new name and this time everything worked fine (Verification and Save). I guess there's something corrupted in the db, creating brand new (new name) email account overcome that situation.