Note: You may have to click your email account in the left side of the window first to view folders under it. View your Junk Email folder by clicking Junk Email on the left side of the window.Outlook Desktop App for Windows or Mac OS (Optional) To add the Junk Email folder to your favorites, right click the Junk Email folder on the left side of the window, and then click Add to Favorites.Right click a message and select Security, then click Mark as not junk.View your Junk Email folder by clicking Folders on the left side of the window, and then Junk Email.Mark messages as not junk Outlook Web App () We also recommend adding the junk/spam folder to your favorites to more easily check regularly. An important part of training the algorithms email services use to detect junk messages is to check your junk/spam folder regularly and mark legitimate messages as not junk.