Inbox folders (formerly categories) allow for a way to organize your inboxes.
If you are looking to delete or update a folder — follow the steps below.
1. Open the Folders page by clicking on the folders link in the left nav bar.
2. Click on "Settings" button in the Actions column to either rename your folder or add/edit folder notes.
3. Confirm on the pop-up that you would like to Update the folder
4. To delete a folder click on the trash icon and confirm deletion on the popup that is displayed.