To compose a new message, click the "New" button and select "Email" from the list.
You can add recipients from your Address Book, by clicking the "To" button on the Compose Mail window. This will open a panel on the left of the window where your Address Book will be displayed.
Alternately, you can use the Auto-complete function by typing in the first few letters of the email address or name of the recipient to bring up the matching Address Book entries.
How do I compose a new email?
