If you're paranoid, definitely use a throwaway email for the opt out. They already have so much info on me that I'm doubtful that confirming my identity would a

If you're paranoid, definitely use a throwaway email for the opt out. They already have so much info on me that I'm doubtful that confirming my identity would add anything to that. I guess we're lucky that most of these SEO-saavy brokers seem to at least pay lip service to US/EU laws (or even do so voluntarily, since I think only a handful of states actually restrict selling your publicly-available or personal information online). I shudder to think about what's floating around for sale on the dark web or companies hosted in countries that don't care about US law.