When you get an iMessage from a new contact, there's a "report junk" option; I'm assuming Apple does some kind of spam detection with that (ie if a particular A

When you get an iMessage from a new contact, there's a "report junk" option; I'm assuming Apple does some kind of spam detection with that (ie if a particular Apple ID gets enough reports, it gets blocked). I've never seen any public documentation of it though.