Open MSG File

Information, tips and instructions

Open MSG File

The .msg file extension is used by Microsoft Outlook email message files. Outlook is a product developed by Microsoft to manage emails, calendar, contacts and calendars. At the precise moment a message is created or saved in Outlook, the system creates a file with an .msg extension. This file contains important information about the e-mail message, including the body of the message, the sender's name, the name of the person who will receive the message, the subject, and the date. The only types of programs that can open this MSG file are those that support MAPI (Messaging Application Programming Interface).

Technical details of MSG files

The .MSG file format was developed by Microsoft Office and it is not a simple text file, it contains all the information of the message, including outgoing and destination network data, so it is not possible to open it with the notepad, Word, etc. The messages are created in a composite binary format and require a MAPI-compliant system to display them. Due to this specific file structure, it is not always easy to import your Outlook messages into a different email service. The .MSG file is created automatically by the system when executing certain functions. For example, when you save a message, the system automatically exports the contents of your email and creates the MSG file.

Other uses of the .msg extension

The FallOut video game contains dialogues between the characters using files with the .msg extension. Each line of indexed text has three sets of curly braces {}. The first set indicates the line index, which is represented by a number. The second set indicates the name of an optional associated .ACM sound file. The third set contains the text that is displayed, either for an observation window or a dialog box. In this case, the .msg files are editable with Notepad or Wordpad.

Open MSG File on Windows OS

  • Try double clicking on a MSG file in Windows File Explorer.
  • If the MSG reading software is associated correctly then the file will open
  • If the file did not open you should install Microsoft Outlook
  • To open MSG file in Microsoft Outlookyou need to launch it and then select File->Open in the main menu
  • In the File Open dialog select MSG file and click "Open"
  • If you do not want to use Microsoft Outlook you can download MsgViewer

Get more information about how to open MSG file.

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If you are not able to open file with certain file extension make sure to check if extension for the file is correct. It is possible that information in the file doesn't match file extension.

File Extension Info

MSG Quick Info
  Microsoft Outlook Message File
  appliation/x-msg   application/outlook   message/rfc822
Opens with
  Microsoft Outlook