The type of notification that you will receive for each forum.

* Default - follow the digest setting found in your user profile. If you update your profile, then that change will be reflected here too;
* No digest - you will receive one e-mail per forum post;
* Digest - complete posts - you will receive one digest e-mail per day containing the complete contents of each forum post;
* Digest - subjects only - you will receive one digest e-mail per day containing just the subject of each forum post.
