in message
how to find out if a message has been blind copied? and to whom?
In the Sent Items folder (or wherever you saved the copy of the sent
e-mail), open the e-mail item. Double-click it or right-click and
Open. The preview pane is not the same as opening an item. Once you
have it open (so it shows its own window), the Bcc field should be
displayed *if* it was used when you sent that e-mail.
