Create a folder or subfolder in Outlook
Folders provide a way to organize email messages, calendars, contacts, and tasks in Outlook.
Select a tab option below for the version of Outlook you're using.
See the resources section for the link to Microsoft Support's article on doing these actions in Outlook on the Web or Outlook.com
New Outlook
Create a top-level folder in new Outlook
In the folder pane on the left, right-click your email address, or hover over it and select More options > Create new folder.

Enter a name for the new folder, then press Enter.
Create a subfolder in new Outlook
Select the folder where you want to create a subfolder.
Right-click the folder, or hover over it and select More options > Create new subfolder.
Enter a name for the new folder, then press Enter.
Classic Outlook
To add a folder to the folder pane in classic Outlook, do the following:
In the left pane of Mail, Contacts, Tasks, or Calendar, right-click where you want to add the folder, and then click New Folder.

Note: When in Calendar, the New Folder command is replaced with New Calendar.
In the Name box, enter a name for the folder, and press Enter.
Resources
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