A Mail Recipient List window has been added to the Mailbox system. An icon added to the right side of the "To" field allows you to search for existing friends or Clanmates, or browse through a personalized list of contacts other than friends or Clanmates. You can add a recipient to the "To" field by double-clicking the character name from your list.
When entering the letters for a recipient's name, an autocomplete function populates all matching entries from your list. Also, the "To" field retains a history of previous mail recipients that may not be on any of your mailing lists to make it easy for your to add them as recipients.