[quote user="viraptor"][quote user="schmads"]
what kind of name+ending email addresses can you use?
[/quote]
It's gmail-only feature, but I think they'll make some sendmail / postfix plugins soon.
PS - first reply is right - "+" is standard, "." is gmail specific.
[/quote]
Address
extensions have been a standard postfix feature for years (and I'd
assume sendmail, though I don't know for certain), so no plugin is
required. Postfix allows one extension character (defaults to "+" but
you can change it), and the option can be disabled so not all postfix
servers will support it. You'd have to check your email provider to see.