Be aware, however, that when you send a message to more than one address using the Cc: field, both the original recipient and all the recipients of the carbon copies can see all the email addresses in...Be aware, however, that when you send a message to more than one address using the Cc: field, both the original recipient and all the recipients of the carbon copies can see all the email addresses in the To: and Cc: fields. If you don’t want any of the recipients to see the email addresses in the list, you can put your own address in the To: field and use Bcc: exclusively to address your message to others.