1. The first step is to open an new email, clicking reply, or clicking forward on an existing email to bring up the email editor.
2. Add the "From" field to the editor
3. Now you select the sending email address
4. Enter the sending address
5. Select the Global Address List
6. Find the email address you want to send from in the contact list.
7. Close the From window
8. Proceed with composing and sending your email