MSG files are fairly simple files that are made up of a series of tags. MSG to PDF - Convert file now View other document file formats MSG files can be easily opened and are very lightweight. if you save an email then it will include content like sender and subject whilst a calendar appointment would include date and location - both of which wouldn't appear if you were saving an email. The MSG file will look different depending on what content you save. This could include emails, calendar appointments, contact cards or anything else that has been saved in Outlook that a user wants to access outside of Outlook.
A MSG file is a file that contains content that comes from Microsoft Outlook.