Beginning wth Outlook 2007, Outlook includes support for RSS by default and add-ins are no longer needed for supported versions of Outlook.
Feed2Outlook passes articles from Rooster RSS reader to Outlook Inbox. Articles can be routed On Delivery (When downloaded), On Request (Menu item click), On Display (When the article is opened).
Utility hide unused folders in Outlook data files, include RSS, Calendar and Contacts in other .pst files.
RSS Popper is a news aggregator add-in for Outlook. News items delivered directly to Outlook as e-mails. No need to use a separate program for reading RSS anymore. All RSS/RDF/Atom formats are supported. Outlook Express version also available. Version 0.37