3 ms·Because you can also unsubscribe by replying "unsubscribe if there is no link. Part of CAN-SPAM.by somid3 9y agoBecause you can also unsubscribe by replying "unsubscribe if there is no link. Part of CAN-SPAM.eli 9y agoCAN-SPAM likely doesn't apply to the message in the first place, but even if it did it does not specifically require that you can unsubscribe by replying. That's just an example of one method they can provide.somid3 9y agoTrue. I was testing. They provide no method to unsubscribe.