In the To or Cc boxes, type the e-mail name of each recipient, separating names with a comma or a 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, on the View menu, select All Headers.
In the Subject box, type a message title.
Type your message, and then click Send on the toolbar.
Notes
If you have multiple e-mail accounts set up and you want to use one other than your default account, click in the From box, and then click the e-mail account you want to use.
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, on the File menu, click Save. You can also click Save as to save an e-mail message in your file system in e-mail (.eml), text (.txt), or HTML (.htm) format.