Why would BCC: be used in an e-mail?
1
It allows the recipient to identify all the other recipients in the list when a group email address is used.
2
It allows the sender to indicate who the email is for if there is more than one recipient
3
It allows the sender of a message to conceal the recipient entered in the BCC: field from the other recipients
4
It allows recipients to be visible to all the other recipients of the message