One of the features that has changed in the bulletin board upgrade is that new post content may not be sent in the notifications. Here is how to enable that.
Go to your Profile > Account Settings, this link is in the navigation menu bar.
Navigate to Modify Profile > Notifications.
Tick the option to send the post in the email.
Click Save Settings. You will then receive the content of the new post in the email.
You may also change the option to be notified Instantly, on First Reply, a Daily digest, or Weekly digest.