Having even a quite high false positive rate would be totally acceptable, if the process involved humans on the Large Faceless Company side. You'd get an email

Having even a quite high false positive rate would be totally acceptable, if the process involved humans on the Large Faceless Company side. You'd get an email, "Hello, there might be a problem, here are the details" and if you made some good faith attempt to reply, be able to talk to an actual person, who could potentially escalate your issue.