Shane,
I've checked out the system and I'm getting email notifications.
Here's how you can confirm whether it works for you.
Either click on "Watch this Topic" on the bottom left of a topic or click on "Notify my when a reply to this post is made" when you make a post.
The system will send you 1 email when there has been 1 or more posts to the topic. You will receive no further notifications until you return to the forum and log in. Then the system resets. A post after you return to the forum will again cause 1 notification email to you.
Let me know if that is not working and we'll try something else.