How to Filter a Folder by Read/Unread E-mails (Outlook 2013, 2010 & 2007)
If you need to filer a folder by Read or Unread e-mails it can be done by changing the “View” settings. In this example we want to delete all Unread e-mails in the “Deleted Items” folder. This can be used for any folder in Outlook. This process will work the same in Outlook 2007, Outlook 2010 and Outlook 2013.