When you add an RSS feed, Outlook creates a folder to contain the items downloaded from that feed. You can change the name or location of the folder when you add the feed. You can also change the folder name or location at any time after you add the feed. The capability to change folders lets you manage your RSS feeds in a folder structure that suits your needs.
Click to expand the folder list under RSS Feeds in the Navigation Pane.
Right-click the folder and choose Rename.
Type a new name for the folder and press ...