To add people to your Safe Senders List, do the following:
1. On the Home tab in Outlook, in the Delete group click Junk, and then click Junk E-mail Options.
2. On the Safe Senders tab, check the Automatically add people I e-mail to the Safe Senders List box.
If you check the Also trust e-mail from my Contacts option, your addresses in Contacts are considered safe senders.
1. Click the Mail icon, and then click the Home tab.
2. In the Delete group, click Junk, and then click Junk Email Options.
3. On the Safe Senders tab, clear the Also trust email from my Contacts check box.