I'm sorry your H is acting this way. He control issues run deep. I like how he just emails you a visitation schedule and says "well her it is." Like he is the master planner in your R.
Honestly, I wouldn't have a problem emailing him back at all and saying something like, "I'm sorry that don't want to cooperate on deciding this schedule, but I feel this is something that should be a joint decision. Dictating what the schedule is going to be without my input is inappropriate and another example of your controlling behaviors that I have discussed with you. If you would like we can sit down together at x time and work together so that everyone is pleased with the schedule."