Downloading an IMAP folder list displays all folders that are created with your account on the server. You can then select which folders you want to subscribe to or view on your computer.
To display the folders when you want to subscribe or unsubscribe
To display the folders in the Microsoft Outlook Folder List
Note In the IMAP Folders dialog box (Tools menu, IMAP Folders command), if the When displaying hierarchy in Outlook, show only subscribed folders check box is selected, then only the folders you are subscribed to will display when you download folders.