Step 1: From the Mailbox Window, select the Mail Options dropdown menu in the upper right hand corner of the screen and select Address Book from the list.

Step 2: Click on the Add button in the lower right-hand corner of the Address Book pop-up window.

Step 3: Type the e-mail address of the new contact in the Screen Name field in the address card for new contact pop-up window.

Step 4: Click the Save button in the lower right-hand corner of the address card for new contact pop-up window.