Wanting retribution and wanting things to be resolved in our favour is perfectly normal as a behaviour. I really really wish I could confront my stepdad, but I don't think it will ever happen.
Perhaps this part of you wants situation resolved NOW? Any way to communicate at all and find out what is wanted as the result of all of this email communications?
He won't find you. You live in another state. You're safe. Make sure all of you knows not to give away addresses and the like so you remain safe, ok?
We want acknowledgement of the pain we've suffered. That's normal and okay even if it's scary.
I'm sorry he's triggering and upsetting parts of you -

but I'm saying "good job" on trying to remain cool under this pressure. That takes a lot of hard work.