Hi Unfearless,
Yes, I understand how you feel and also, I understand that it takes time to switch to survivor mode, but, be sure the time will come. The only thing I ask you please do not replay his emails. You are right it seems unfair to let him have the last say, but, guess what? Not replaying to him is the worst thing you can do to him. This is because his biggest pleasure is when you replay to him, as you give him the opportunity to answer back to you. Remember this, he does not work like you, I mean, his mind does not work like yours. He is not about reciprocity at all. The worst thing for him is ignoring him. Beyond people like him there is a lot of need for attention, do not give your attention to him, he does not deserve your time.
A hug