Yeah, he's concerned about it being used to identify him in the unlikely event of a lawsuit or something. I'm not entirely sure what it's all about.
I just thought it seemed like something that *might* be doable so I was looking into it for him.
Unfortunately I don't have access to the PHPMyAdmin, only the CP. So I was hoping it would be something I could do from the SQL command page, maybe something like this totally made up example:
update ubb_USER_PROFILE set USER_REGISTRATION_EMAIL='[email protected]' where USER_ID='1234'
But I gather it's not that easy?