1. With the home tab on the ribbon active, click on the Junk button (in the Delete group) and select Junk E-mail Options

2. Once the Junk E-mail Options window appears switch to the Safe Senders tab

3. Click "Add"

4. In the window that appears, type in the email address of the person you want to add to your Safe Senders list and click OK

5. Select "Apply" and then "Ok"