By default when someone replies to your posts you will receive an notification email telling you that you have a reply.
You can adjust these Notifications in your Profile area. Options include just receiving a notification for the first reply, receive a notification for all replies, or alternatively turning them off altogether.
Note: Be aware that many people post something in the forum, receive a response but then forget to return to the topic to reply. This is annoying to those that have answered your original post, so think carefully before turning off notifications altogether.
To adjust the settings go to:
Profile —> Modify Profile —> Notifications
If you have notifications already set on several topics then these topics will appears as a listing below the above area.