Displaying or hiding the Blind Carbon Copy (Bcc) field
To display or hide the Bcc field
Write or open a new message.
From the New Message window, click the View menu, and then do one of the following:
To display the Bcc field, click Bcc Field. A check mark indicates the Bcc field is displayed in the message.
To hide the Bcc field, click Bcc Field to clear the check mark.