I thought we were talking about in the long run. Setting up a bouncer is something that would take you a few minutes at most. I'm by no means an expert in this

I thought we were talking about in the long run. Setting up a bouncer is something that would take you a few minutes at most. I'm by no means an expert in this matter, so I can only pretend to be a stalker, and see how it would make me feel. If I thought the person received my emails, which I'd be certain of if I already knew the person, and already had conversed with the person through the email, "no response" would to me mean "he is ignoring me, but still receiving my messages". If I got a bounced back message I would think "shit, he blocked me. I'd better send from a different email address". I'm not sure which gets the most pay-off, I guess it depends on the stalker, but redirection effort means they have to do some effort. If you collect evidence of effort to stalk you, for little or no effort on your own, I'm sure that doesn't hurt either in proving your case.