I don't know your H but from what you've said here and I know we post more negatives than positives about the WAs, he doesn't sound like he's much of a collaborative guy.

If you start the collaborative route and then have to start over it will cost more.

I wouldn't "draft" an email, make it short and sweet.

"H, I've decided to file for a legal separation. We can go one of 2 ways, collaborative or traditional. Info on the C option can be found here (website).

Contact me after you've had time to study the options."

This is now business, approach it that way and try to compartmentalize relationship issues from business issues.

Me 57/H 58
M36 S 2.5yrs R 12/13

Let me give up the need to know why things happen as they do.
I will never know and constant wondering is constant suffering.
Caroline Myss