This is going backwards. I already get a lot of mail that I never signed up for (because I have a common username), and this will only make it worse. Sorry for

This is going backwards. I already get a lot of mail that I never signed up for (because I have a common username), and this will only make it worse. Sorry for all the businesses where double opt-in reduces your subscription rate, but you're only making things worse because I mark as spam anything I never signed up for, even if unsubscribing is super easy.