A: Click the Domains tab, then click the link where it reads, Already own a domain? You can enter each of your domain names (you'll need to enter them one at a time) and the email address you want emails sent to the domain name forwarded to. Select either the Account Profile or Flyer radio button where it reads, "Link domain to" depending on where you want the domain name mapped to. Once you've done this, click Update. For instructions on updating your domain name register (which you'll need to do to complete the process), click the Instructions link on this same page.
Take a look at this step-by-step tutorial for more assistance.