So if i get this right, and i think i'm agreeing with you now, is that if a member flags a Priavte message for the attention of, then Admin can view it?
And if they dont we cant
Yes! Basically a notice will arrive in the CP saying "there are x pm's alerted for abuse" and "There are X pm's alerted for spam"... then you click on it, and it displays THAT MESSAGE, nothing more, nothing less; then you can decide to enact upon it, or dismiss the alert...