> First, not all places accept the + character Additionally you cannot send an email from foobar+dontspamme@gmail.com. If you aggressively use the + character

> First, not all places accept the + character Additionally you cannot send an email from foobar+dontspamme@gmail.com. If you aggressively use the + character for legitimate signups but need customer support they may not be able to find your account as easily (e.g. "we couldn't find an account associated with e-mail foobar@gmail.com").