Hitting 'unsubscribe':

• Takes you to website where you have to go through multiple steps of inquisition: your email, are you sure, want to just get less, are you really sure, give us a reason, ok it's queued up and we'll get to it whenever.

Or,

• Hey, this is a live email. Ok, whatever, thanks. We'll make more money selling this email to data brokers. Mission accomplished.

If on gmail, hit unsubscribe.