Outlook In the "Search Folders" under there "unread."，The default will be added to "Favorites Folder" in，If you can not find this directory on favorite，In the Search Folders also disappeared beneath，To manually add it back。
1.In the "Search Folders" right-click，Select the "New Search Folder"
2.Select "unread messages"，Press OK
[Links]
- Andy's hand writing technology notebook: Outlook 2003 unread messages [] folders disappeared!
Recently encountered this problem，See this post，We have solutions，Xie Xie 您!
You're welcome ~
Anson Reply | July 5th, 2018 at 2:23 PM