In the To and/or Cc boxes, type the e-mail name of each recipient, separating names with a comma or semicolon ( ; ).
To add e-mail names from the Address Book, click the book icon in the New Message window next to To, Cc, and Bcc, and then select names.
To use the Bcc box, click the View menu, and then select All Headers.
In the Subject box, type a message title.
Type your message, and then click the Send button on the New Message toolbar.
Tips
If you have multiple mail accounts set up and you want to use one other than your default account, click in the From box, and then click the mail account you want.
If you are composing a message offline, your message will be saved in the Outbox. It will be sent automatically when you go back online.
To save a draft of your message to work on later, click the File menu, and then click Save. You can also click Save as to save a mail message in your file system in mail (.eml), text (.txt), or HTML (.htm) format.