You may be right. A better solution might be to build an external UI for account management, but I've shied away from that, wanting to keep everything inside Gmail. Maybe in the future though.
From your comment on the blog:
> Like I’ve explained above, email@example.com is not an email address.
To the average user, it certainly looks like an email address. Maybe just have it act like a normal email and list it under the support section of your website: https://www.gmass.co/#contact