They're not only sending these to active (even if free) users: They've sent payment demands to users who haven't used it but still had long idle free or expire

They're not only sending these to active (even if free) users: They've sent payment demands to users who haven't used it but still had long idle free or expired accounts... but they _also_ deleted accounts that had been idle and have no error handling for that, so all the links in the email just give you 500 errors. Classy.