Private Messaging Plugin, Is this intended result?

Hi .. I installed the Private Messaging Plugin .. when I entered a single message to ALL it shows a whole list of messages in the Left Hand side bar of the Sent Page ... I would have expected to only see a single entry in the list. Is this intended result? I think it is one for each message sent, but it does not display who it was sent to and I can not click on it to open the message thread.