ReceivedOnBehalfOfEntryID Property
Returns a String representing the EntryID of the user delegated to represent the recipient for the mail message. This property corresponds to the MAPI property PR_RCVD_REPRESENTING_ENTRYID. Read-only.
expression**.ReceivedOnBehalfOfEntryID**
*expression * Required. An expression that returns a MailItem object.
Applies to | MailItem Object