Categories in Microsoft Outlook
Students, faculty and staff can use Categories in Outlook as a solution for organizing (tagging, labeling, and grouping) emails. There are default categories that can be customized, and new categories can be added. Messages, events, and more can be added to categories, and categories can be added to your Favorites menu for quick access.
For more information on Categories, please visit: Use categories in Outlook - Microsoft Support
Customize Categories
In the Outlook Web App, you can customize your categories in the Settings menu, under Account → Categories:
To create a category, click the “+ Create category” button
To rename a category, click the edit button/pencil icon
To delete a category, click the delete button/trash icon
To favorite a category, click the favorite button/star icon
Add an Email to a Category
When reading an email, you can add it to a category by clicking the category button/tag icon in the action ribbon:
Alternately, you can press C to categorize a message if you have Outlook.com keyboard shortcuts enabled. Start typing the name of the category or use the arrow keys to highlight it, and press enter to select. For more about keyboard shortcuts, visit: [link]
View All Emails in a Category
To show all items in a category, type the category name in the search bar and select the category from the results:
If you have marked a category as a favorite, it will also appear in your Favorites menu: