I know on the ask a question forum, at the end it asks if you want an email sent when your post gets a reply.so if someone clicks no, they do not get notified via email. But again that is in the ask a question forum.
Another way is they can look in their own profile, and look under the "posts by....." then they can search for their post with the question. I how that helps. Maybe Dave or another moderator have a better answer
