Gmail is already a well-known spammer. Loads of spam come from Google, I see it everyday, by far the biggest source of spam I see. Unfortunately, they're also s

Gmail is already a well-known spammer. Loads of spam come from Google, I see it everyday, by far the biggest source of spam I see. Unfortunately, they're also so big, with so many legitimate users, that you can't block them wholesale if you're expecting to deal with the public, many of whom have a gmail address.