I'm not going to read it, and you shouldn't either, if reading his emails causes you this much stress. I don't need any more triggers, and neither do you, am I right?
Here's what I can guess, without reading it:
It's all designed to make you feel bad
It blames the failure of the marriage on you
It's all about you, and your problems, and your defects, and how you are a bad person.
So in other words, it's all quacking crap.
how did I do?
Sometimes I just hate email, and wish it was never invented. It's an easy way to get into someone's head when they won't engage with you otherwise.
Now I'm tempted to read it to see how I did... dammit