Press the “Windows” key, and then enter “Outlook” to bring up this program on the search list. Right-click “Outlook” to add a tick next to this program. Options, such as Pin to Start, will display at the bottom of the screen. Click “Pin to Start.” Press the “Windows” key to open the Start screen. The Outlook tile may be to the far right of this screen. Click and drag the scroll button to bring this Outlook tile into view if necessary. Click and drag the Outlook tile to the preferred position on your custom Start screen. For example, if you have collected your email programs or Office programs in a group, try clicking and dragging the Outlook tile to this group for quick activation. To unpin or remove a tile from your Start screen, right-click the tile and then tap or click “Unpin from Start.” The app remains on your PC, but the tile disappears from your Start screen.

How to Put Microsoft Outlook as One of My Tiles in Windows 8 - 78