It used to exist; they lost control of the domain recently. (Though other people think it was a homoglyph attack.)

And yeah, it was spoofed via a compromised saudi-re.com account. The point isn't that it was the Proud Boys (as little as I like them, the organisation probably wasn't responsible); the point is that potential voters were threatened. This will reduce the number of targets who vote, regardless of who was responsible.

I also use ProtonMail, but only because I haven't got a self-hosted system set up yet. I don't think ProtonMail is as confidential as they claim; I only use them because they (probably) don't sell my data to advertisers, and because GoogleMail doesn't block emails from it.