This actually differs from one jurisdiction to another, that is, some jurisdictions do not permit publication of correspondence without the consent of the sender. Use of your email for AI training therefore may therefore be open to legal challenge. You know how legal challenges start? By someone feeling that there is a problem.

In any event, as the other poster mentioned, your original post claimed “You can…” and now you are moving to “You can’t” out of an apparent relish for being contrarian. This is not good-faith discussion on your part.