Click the New Email button on the Home tab of Mail.
Press Ctrl + N.
Enter a recipient’s address.
To: Contains the primary recipient’s address.
Cc (Carbon Copy): Sends a copy of the email to a secondary address.
Bcc (Blind Carbon Copy): Sends an additional copy to someone without anyone else knowing—except you, of course. Display this feature by clicking the Bcc button on the Options tab of the message.
If a recipient is in your Address Book, you can also click the To, Cc, or Bcc button to open the Select Names dialog box.
If you want to send the message to more than one person, insert a semicolon (;) between each email address.