@darius FWIW email is a lot more secure, on average, than people give it credit for. It doesn't break in the nice clean way that e.g. spoofed TLS would, but in practice if you try to blast out plaintext SMTP forged from: headers these days, you get blackholed into oblivion 99% of the time. servers are also using TLS between each other and so grabbing messages off the wire is not trivial either.