Having discovered what may be a flaw (or a misunderstanding on my part) in the mailbox statistics report I'm working on my own derivation of the size of messages in one or more accounts. Using the statisitics report as a comparison I'm not arriving at the same figures. I'm adding the message size with the size of all attachments. So I'm wondering if there's another factor I'm not looking at, possibly that the message size doesn't include the space required to store the message recipient.

Does anyone have any insights into what I need to look at.