The e-mail is fine but I would give him the days you are available and let him choose.
H: I have decided to remove you from the joint billing account. In order to do this you must be present at the bank with me. I am available Monday, Wednesday or Friday. Which day works best for you?
If you ask him when he is available he might say never, lol!
I understand you are reeling right now. I so get it. It doesn't really matter what we think about how you choose to handle your H's addiction. You have to do what you think is best. As long as you are doing it with a clear mind and not reacting on emotion then do what you need to do.
Don't worry so much about the ins and outs of a legal divorce. Let your attny be your guide... work with him/her but also let him/her work FOR you.
