Your h sees you as the enemy, the enemy that has made him very unhappy. He sees you as controlling and being an authority figure and someone who keeps saying that there is no money or this needs to be repaired or that needs to be repaired. He wants to break free of all of that. He is going to continue to monster until everything has been destroyed of that "marriage" even if that means destroying your reputation in the process. He wants out the relationship and he wants his share of whatever the equity is and whatever assets you both have. He doesn't want to hear that there is no money. In his irrational mental state, he thinks that there is lots of money and that you are hiding it somewhere over that rainbow in a pot of gold. It doesn't matter to him what is in black and white.
I would venture to say that he will continue to act out even if the divorce is finalized because you have two children together. Your daughter, to him, is a possession, as he tends to favor her over her brother. He may continue to take you to court over the custody or because of his visitation dates that are assigned, but whatever the reason, I do think he's not going to go quietly. I am not telling you my opinion to get you upset, but I am trying to give you something to think about because this man isn't going to go quietly.
I agree with Grace and DNJ, block his emails or just send them to the trash bin. Do not involve others in this email mess. Next thing you know, he'll bring up some bogus charges against that person for responding for you. It's a good way to lose a good friend by involving them. Please do not do this.
I agree w/DNJ about divorce. I don't agree w/how easy it is to get one, but in a case such as yours, a divorce would certainly ease the pressure/stress that you are under and it will free you up to allow you to focus on you, your children and your career. Trust me, God would not have an issue w/a divorce in your situation. He doesn't want any of us to live in situations such as what you are going through.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.