| Introducing the Compose Page | Addressing Your Message | Writing Your Message | Personalizing Your Message | Attaching Files | Sending Your Message |
The att.net Mail Compose page is where you write, address, and send email messages. You get to this page from the Mail tab.
Tip: If you want att.net Mail to automatically add a signature to your outgoing emails, define the signature before your begin composing your first message—click here to learn how. Once your signature is set up, you’ll see it in the body of each new message you compose.
Open att.net Mail. 
On the main att.net Mail page, click the New button.

The Compose page opens.
Start composing an email message by addressing your message so att.net Mail knows who to send it to.