As a probably not autistic person, email is one area where warmth is not wanted. Just get to the point, I have a dozen more to get through. And that's precisely why you shouldn't use AI to write email, AI rambles, I want 1-2 sentences, short phrases are fine.
Seriously. I want highly detailed, equally highly concise emails. Send me an email with the topic in the subject and only relevant bullet points in the body and I'll love the hell out of you.