Re: Annnnnnnd...
Generally if some fuckwit corporation insists on me giving them an email address, and if a moment's reflection reveals that there's no way they can validate it (e.g. airport WiFi where you have to provide an email address before you can access, but there is no way that they could email you an authorisation code because you don't yet have access to the WiFi) then I make up something in the domain <example.org>. It could be <example.com> or <example.net> with the same result. Don't quote me on this, but I believe that *.invalid works much the same.
I'm not sure where your 320 character limit came from. So far as I'm aware any combination of <user-name>@<domain>.<tld> is valid, and <user-name> can contain any otherwise reserved characters so long as it is quoted.
But sure, feed the fuckers really long garbage in the hope that it might break their suppositions about maximum length.
-A.
Biting the hand that feeds IT
