The goal of being here is to save your M if possible but definitely to save yourself.
We have all been where you are. It is mind boggling to face the rejection, the loss of friendship, the loss of desire. Can it come back? Of course. If both parties want it to and do the work.
Right now your H doesn't want the M and hasn't indicated that he wants to do the work. He knows how you feel about him. Granted, you know your H and we do not. But based on the collective experiences of people here and of many others as recounted in various studies, sending a WAS an e-mail pouring out how much you love and miss him is not a good idea. It will generally be a further turn off and a way of tightening the noose.
I have sent several desperate e-mails and texts in the early days of my sitch and while it made me feel better to get it off my chest, I wish that I hadn't done it. Looking back I feel like beating myself for conveying such a level of neediness and desperation. Very unattractive. And never again!
Draw your boundaries. Let him go. Focus on getting your groove back. Let him learn how to respect you again. He knows the way back and if he is serious he will let you know and will do the work.
You don't have to give up hope.Just realize that your H is not at a point now where pursuit will work and where pouring out your feelings will work. Right now you are a predictable open book to him. Work on regaining your self esteem and let him wonder who this new woman is and how he may be able to persaude her to take him back.