Exchange client folder view does not display Bcc address properties

Microsoft Exchange Server blocks requests for Bcc properties in the client's folder view. Even when you use the Bcc address field as a display column in a client, Bcc address field values are not returned to the client. This behavior is by design, and occurs in all folders, including the Sent Items and Drafts folders. However, after a message is opened, the Bcc address properties on messages in the Sent Items and Drafts folders are visible.

This behavior is by design for security and performance reasons. If you want to view Bcc information in a table view, use the Find functionality of your Exchange Server client, and query the information store using the Bcc properties column as a display column in your search folder.