If anyone from Shop.app is here, your unsubscribe does not work either (maybe due to VPN usage).

But that's okay, Fastmail now automatically routes it to the spam folder where it belongs.

additionally:

Interesting, I set my email as a backup authentication for a luddite friend's Comcast email account, and I just discovered spam from Xfinity in my spam folder. Shame on you Xfinity Comcast.

The problem:

My understanding is the CAN-SPAM Act violations can only be prosecuted by states Attorney Generals, there is no civil action available.