It is complex process if manually but made easy by some application. You will get some application on the web. EML Viewer pro such type of application that will help you to covert outlook .mgs to .eml file and view. You need to follow Few step to convert outlook mail to .eml format. At first Select your outlook emails that you want to convert into .eml files. Than Go to export tool bar and click the Export button it will go to work exporting your .msg files to .eml files.
