Search folders in Outlook are virtual folders that contain views of all email items matching specific search criteria. Messages are not stored in search folders.
A search folder can be a handy tool to navigate, organize and monitor your email messages. Creating search folders for unread mail, flagged or important mail, or in order to more quickly locate messages from specific senders or recipients are just some the ways they can be utilized.
You can also check for unread messages or items using the Unread filter option that appears at the top of the message list for each folder.
Each folder in Outlook also has a search bar at the top and a drop-down menu that allows you to expand your search parameters.
For information on how to create or delete search folders, create custom search folders, or how to use advanced criteria in your custom search folder, visit the following Microsoft Office training site:
Create or delete a search folder