Manually Add the Sender to Your Safe List 

If an existing email from the sender hasn’t already been trapped in your junk folder, you can manually add him to your Safe List.

• Click on “Options” in the upper right corner of your Hotmail screen.
• Then click the link for “Safe and Blocked Senders” in the body of the page under Junk e-mail.
• Click the “Safe Senders” link and enter the email address you want to whitelist.
• Click “Add” to put it on your list.