Forum Subscriptions
There are two types of subscriptions: Forum Subscriptions and Thread Subscriptions. When you subscribe to a forum, you will be notified via email when any new thread is posted in the forum. At the top of the forum list, you will find the link "Subscribe to this forum," which you can use to subscribe to the forum. Forum subscriptions can be managed in the User CP (control panel). Subscribing to a forum does not automatically subscribe you to all its subforums. you need to drill down to the subforum you are interested in and specifically subscribe to that subforum.