Multiple Manual Techniques to Import MSG Files into Outlook Now, the question is how to import MSG files into Outlook? Thus, this blog will describe multiple ways to convert MSG into Outlook. When a user needs to open an MSG file, Microsoft Outlook is the primary program that comes into the user’s mind. MSG files are used for the purpose of archive and scanning malware. MSG is a file extension for a mail message file format used by Microsoft Outlook. msg files into Outlook is the most common query asked by the users.“ Many users encounter situations, where they need to access MSG files. “ Hello users, we are here with the solution of importing MSG into PST Outlook.