They allow anyone to sign up for any address. Not kidding. Want notifications of when the neighbors are getting mail and packages delivered? Just poke a throwaway e-mail address in with their home address! LOL. Works for anyone actually. Get notifications of anyone’s mail being delivered. Such service! I’d say it’s a nice tool for robbers, but USPS can’t track anything worth a damn anyway, so it might really be there or it might not. Hahaha. You’d think... USPS might have a sign up system where they confirm it’s your email... by mailing you a postcard... with a confirmation code on it. Hahaha. Ya think that might work??