showing that a PM has been read
I wonder whether a listed PM gets the "has been read' indication (becoming brightened instead of staying dim) immediately & automatically when it's opened by the intended receiver, or the receiver must click on the "close" button for this indication to occur. If it's not so immediate & automatic, it's not fare to the one who sends it, because the intended receiver can read the PM while avoiding letting the sender know it been read.
Receiving an unread message the title is shown in bold letters and is marked as "new". If the receiver decided to press "close" then it means the message has been read. Thank you