Outlook Data Folders
Outlook lets you create Outlook Data Folders for personal information. This lets you keep your messages on your hard drive (or network drive) so they don't count against your mail quota.
Note: These can only be set up with Outook if you run it on your desktop. If you use Outlook Web Access via the Internet, then this feature is unavailable.
Setting up your folders
You have now added the personal folders. They will be displayed at the bottom of your list of folders in Outlook.
Note: If you don't see a list of folders, click on "View" and then "Folder List."
Moving files to your Personal Folders is simply a matter of dragging the messages to the folder. You can drag an entire folder, or individual messages. If you right click on the words "Personal Folder" you can create new folders within the personal folders. These can be set up to mirror your folders on the web.