The Navigation Pane, located next to the main window, gives you one-click access to all the folders in your mailbox.
Mail Gives you access to all the folders in your mailbox (Favorites, Deleted Items, Calendar, Contacts, Drafts, Inbox, Junk E-Mail, Notes, Outbox, Sent Items, and Tasks) and any personal folders you've created. It also lets you manage the contents of your mailbox by creating, renaming, moving, or deleting folders.
Calendar Lets you navigate your calendar and create additional calendar folders.
Contacts Lets you view and work with your contacts. The options in Contacts also let you create additional contact folders and select which contacts to display.
Tasks Lets you view and work with your tasks. The options in Tasks also let you create additional task folders and select which tasks to display.
What if I want to know more?