What I've found is that some companies will invent whole new mailing lists which are opt-out so you get the spam mail and have to log on to the site to unsubscr

What I've found is that some companies will invent whole new mailing lists which are opt-out so you get the spam mail and have to log on to the site to unsubscribe. It's like playing Whac-A-Mole but for email.