If you want to send a message to more than one person and do not want the e-mail addresses of the certain recipients to be displayed, then the Blind carbon copy option, by doing the following:
Click the Address Book button in the Compose mail window.
Select the person's e-mail address, then click the Blind Copy button.
Click the OK button.
The e-mail addresses will not be displayed in the Compose message dialog and can only be viewed using the Address book Blind Copy button.
Note
You can send a blind copy of the message you have typed to more than one person by entering their names in the Blind Copy addresses text box.
If you want to delete an address from the Blind copy address list, click the Delete button.