Make sure that the "Conversation" View is not active. To do that log onto your BTMail account and click on "View" in the menu bar at the right hand side. Scroll down and Single click "conversation view" to toggle it on or off.
When you toggle it on or off you will see the name "Conversation View" change colour from grey to blue when it is turned on.
If it is on you will notice a number beside some of your emails in the list of emails.
