What the AI email writer does, and what it deliberately does not
It writes first drafts. That is the whole scope, and the narrowness is the point. The assistant reads the record you are on, produces an email for the purpose you choose, and hands it to you in an editor. You change what you want and you press send.
It does not decide who to contact, does not send on a schedule of its own, and does not reply to a customer without a person in the loop. Where drafting assistance goes wrong is not bad grammar; it is a fluent message arriving at a moment a human would have recognised as wrong. Keeping a person on the send button removes that failure entirely.
