Ever sent emails to addresses with the # (hashmark/pound/number) symbol ?

[pepperminty]

Hi all.

Have you sent emails to anyone or any organization that has the # symbol in their email address?

If so, which entities or domains use it?

[catweazel]

https://en.wikipedia.org/wiki/Email_address#Local-part

special characters !#$%&'*+-/=?^_`{|}~;

Despite the wide range of special characters which are technically valid, organisations, mail services, mail servers and mail clients in practice often do not accept all of them. For example, Windows Live Hotmail only allows creation of email addresses using alphanumerics, dot (.), underscore (_) and hyphen (-). Common advice is to avoid using some special characters to avoid the risk of rejected emails.