There's this myth that automated spam detection is hard because spammers are all very clever masters of disguise.
No. Spammers are stupid as a shoe. They have dog shit for brains.
Automated spam detection is hard because the line between spam and "legitimate" marketing activity is a fiction.
@danslimmon
Not just marketing.
Every time I get an order confirmation mail, it's sent from "noreply". Who sends from noreply? Spammers and fraudsters, that's who. A legitimate company would want to make it easy for customers to contact them.
Every time spammers come up with a new trick, 3-6 months later, it becomes a "best practice" for legitimate companies so that telling spam and scams from legitimate mails becomes harder.
dan slimmon
Leeloo