Outlook Web Access 2007 incorporates the auto-fill feature many people are familiar with from desktop Outlook. How it works is when users type a name in the address bar of a new message or meeting request, a drop down list of the most recent recipients is displayed. The list is narrowed down as the user continues to type. Choosing names already in the drop down list makes addressing a message much more time efficient.
To remove a recent recipient from the drop-down list,For more flexibility around managing favorites, there is a third-party add-on from Messageware (www.messageware.com) which allows users to manage their favorites by adding or removing them from the favorites list.