This is a good strategy for contentious topics. That said, I would argue that the best thing in this situation to get the task done is to call the person. That way you can hear them, react to them, and the task is done at the end of the call. That said, I don’t know anything about your email, audience, etc so you do what works for you.

My underlying hypothesis is that too many people are afraid of making phone / video calls, but it’s a much better way of getting difficult things done sometimes.