There are multiple ways to track unread messages: 1) The communication icon (💬) on the right side of the Header Bar displays a red unread count badge. 2) When you open the communication panel, the topic list shows "Unread Topics N" at the top. 3) Unread topics in the list have clear visual indicators (red dot or bold text). 4) The Discussion Management page also has an "Unread Messages" statistics card. Once you enter a discussion thread, messages are automatically marked as read.