Filter your search in the BlackBerry Hub
In the BlackBerry Hub, tap
Leave the Search field empty. Tap
Tap Priority, Unread, Flagged, Received, or Attachment.
BlackBerry Hub and email
To see all of your messages again, tap Cancel at the top of the screen.
Tip: You can also find your flagged messages in BlackBerry Remember, in the Flagged Messages task list.