That's a good idea in theory, but considering IPv4 addresses cost money and Gmail addresses are infinite for practical purposes, that wouldn't work. I don't kno

That's a good idea in theory, but considering IPv4 addresses cost money and Gmail addresses are infinite for practical purposes, that wouldn't work. I don't know that I've ever seen the same Gmail address used more than once for spam and phishing. It'd be nice if Google did something about this. Until they do, I tell everyone that uses Google for email that they have to accept that they're hosting with one of the biggest sources of spam on the Internet that, as far as I'm aware, does absolutely nothing when spam from them is forwarded to their abuse addresses.