Can reports be filtered by "CC:" (Carbon Copy) to display/show a count on how many messages were received/sent by a specific user that was part of the CC list?
Unfortunately MessageStats cannot filter reports based off CC. MessageStats counts all Messages sent to mailboxes regardless if they're in only the To: field, or only the CC field. For example, if there were 1 outlook message sent to 3 people in the "To" Field and "3" people to CC field Messagestats would see that as 6 "Logical" Messages and one "Physical" Message.
STATUS
Enhancement request TF00186644 has been submitted to Development for consideration in a future release of MessageStats.
Definition of Physical and Logical Messages can be found here:
https://support.quest.com/Search/SolutionDetail.aspx?id=SOL74963