Open a Forum then scroll all the way to the end of page. At the left side there is a list. BUT...I'm not sure that it's consistent yet. I thought the envelope would change from blue to gray when I read it....but it stays blue until there are no unread posts in it. Also at the bottom of the Forum page there are some choices as to how to display the thread....I chose to see only threads with posts from the Last Day and to see them in order of when the thread was started...not when the most recent post was made by someone. See if that helps.
Anita