If you use an outlook.com or hotmail.com email address and are not receiving email from someone whose email you wish to see, you may need to add the address to your safe sender's list. Otherwise, email from the sender may not even be placed in your junk email folder, but may, instead, just be discarded by Outlook Mail.
To add an email address to Outlook Mail's safe sender list, click on the gear icon at the top of the Outlook Mail window you will see after logging into your account.
Select Options from the drop down list.
Then select Safe Senders.
Type the email address that you wish to add as a new safe sender in the field below the pencil and trash can icons, hit Enter then click on Save.