>Bouncing to no-reply address will not help much either.
If someone does that, it's a good method to land on basically any spam blacklist out there.
Most larger providers like mailgun will tell you if you're bouncing a lot of mails and reduce your reputation. Same for gmail even.
Hmm, so if more people do this, anti-amp email blocking would reduce reputation of amp-email senders? Nice.
Indeed, atleast for most popular email providers that should be the case.
it also helps if you report senders that repeatedly bounce that way to spamlists. That usually gets a lively reaction.
Better to just complain over channels where someone is actually listening.