How to apply Outlook.com rules on the junk folder and How to “stop” Outlook.com from moving Emails to Junk or Spam Folder
UPDATE : A more advance flow is described in this new blog. I use Microsoft Outlook.com for my private mail for many years now, and over the years I receive more and more spam. In most cases Outlook.com redirects all spam to my Junk folder, which is good. But in some cases Outlook.com also redirects legitimate messages to my Junk folder, and this force me to scan my Junk folder on legitimate messages every few days (default retention policy of Outlook.com let Junk items expire in 10 days).