There's been a solution for this forever. If someone sends an email with most of the words just being "unsubscribe" or "remove me" then at the least you don't

There's been a solution for this forever. If someone sends an email with most of the words just being "unsubscribe" or "remove me" then at the least you don't send it on. Added points for auto-replying unsubscribe instructions or even just do it. Fairly basic for a mailing list program.