There are two approaches to adding an email address to your safe senders list in Outlook 2010. We will start with the easy way first.

Highlight the email in your Junk Mail Folder by right clicking on it.

The second method is a bit more cumbersome but does the trick. Go to Tools-> Options -> Junk Mail

You could also check the ‘Automatically add people I email to the Safe Senders List’ to save your self the hassle of doing these steps. But beware, you don’t want that Safe Senders List to get too big.