Topic Reply

Is there a way to notify those who commented in a post, *using the email that they submitted* that there was a comment that was posted to the topic?
SO basically anonymous people post comments using their name and email and then when someone posts after them, they get a notification email.
I just dont want people to have to register/login and stuff like that. It makes it easier on them to want to post.
You can go to my site and see what I have so far…..
Thanks for any help you guys!! 🙂
Courtney Elizabeth
http://www.courtneyelizabeth.com