Ok, so if you still have not sent that email then do not send it as written. IMO, What you wrote is angry and accusatory and that gets no one nowhere. What is your goal by emailing? do you want to end your M? do you want to attract attention? My H is very good at being an avoider. I tried many methods to communicate but not much worked. The method I used was to email or write a letter and then follow up and ask for time for a conversation. Of course those conversations were usually just me talking but every once in a while H cracked a litte....
I suggest taking out the anger and accusing words, and including a plan of action. And of course, be ready to follow up.
Live your life while you are still living. Riding the trail less traveled.