The Favorites section in Outlook is a useful feature located at the top of the Navigation pane that allows us to quickly access certain folders in Microsoft Outlook. The Navigation Pane includes shortcuts to folders such as your Inbox, Sent Items, and Search Folders. You can add, remove, and rearrange folders in this area to make it easier to access your mail folders. Please see also How to Add or Remove Sites from the Favorites List in Microsoft Edge.
A shortcut is created when a folder is added to Favorites; nevertheless, the folder and its contents remain in their original location in the folder list. Removing a folder from Favorites does not erase the folder or its contents; just the shortcut that shows in Favorites is removed.
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How to add folders to Favorites in Outlook
If you want to add a certain folder to the Favorites in the Navigation Pane first, locate the folder that you want to add to Favorites, then right-click it.
In the drop-down menu that appears, select Add to Favorites.
How to remove folders from Favorites in Outlook
If you no longer want to have some certain folder under the Favorites section of Outlook, you can follow the process below to remove or hide them from your view.
To remove a folder from the favorite pane, navigate to the Favorites section and right click on the folder to remove. In the drop-down menu that appears, select Remove from Favorites.
Note: Make sure to remove folders from the Favorites list rather than deleting them. When you remove a folder from Favorites, the original folder remains in the folder list. When you delete a folder from Favorites, Outlook deletes the folder and its contents.
If you don’t want to completely remove folder from the Favorites pane, you can simply hide it. This approach will hide the Favorites folder as well as its subfolders from the Navigation Pane. Follow the steps below to do that:
In Microsoft Outlook 2010 and above, go to the View tab and select Folder Pane (or Navigation Pane), then click Favorites from the drop down menu.
After you disable the Favorites (or Favorites Folder), the favorite folders will no longer be shown in the Navigation Pane.