There is away to get email updates from the whole forum READ HERE, or you subscribe to a topic that you post or reply to.. and you can Read HERE how to subscribe to those threads.
If you come to the forum, and want to know if there are new post you can do that by, looking at the left of the forum and you will see a little box with a dragonfly in it, if the dragonfly box is green then there are new post or unread post, you have not read yet.
Picture below, shows I have read all the post on the forum. As all the dragonfly are colorless. (The keys show the treads that are private until you become a member.