Oh good grief. I went back and read your other two threads, and see this thing started OVER A YEAR AGO, and here you are STILL forwarding letters, and emails, trying to get him in trouble with his family, the elders, workmates, bosses, etc. For what? So you can vindicate yourself? You have acted like as much of a fool as they have with your letters, your blog, and your vindictiveness.
Just stop. Let go of the ex, let go of the in-laws. You've dealt out enough "revenge" by now, there's nothing left for "karma." They've pretty much paid in full by having to deal with you.
I can't help but think that the fact you're still behaving so vengefully and childishly over a year after all of this stuff, (which seems to have been escalated by you in the first place, after all he did move out in short order, but it was YOU who tried to ruin everyone else's lives by divulging secrets of even people who have nothing to do with you,) perhaps your behavior holds the clue as to why he left you in the first place.
Regardless, get help, before you destroy yourself trying to take everyone else out.
Personally, I didn't see anything particularly heinous about the email in the original post on this thread. I'm irritated enough by YOUR side of your behavior to have written you a much meaner one. I can only imagine what the real story would tell. She showed remarkable self-restraint, IMO.