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What is .MSG File Extension?

Check MSG Format Specifications:

Format Type:Text and Binary
File Category:Text Files
MIME Type:application/vnd.ms- outlook
File Hex Signature:D0 CF 11 E0 A1 B1 1A E1
String Value:DI.ait.a
Supported Platforms:Windows, MAC and Linux.
Default Location:User defined

Detailed Information about what is MSG File Format!

To ensure what is .msg file format you can simply say that MSG files are encapsulated email message extensions widely used by Microsoft Outlook and Exchange Server. These files contain an email header (sender, date, subject, recipients, etc.) and message body in plain ASCII text format along with Hyperlinks as well as attachments. MSG File is Compound File Binary (CFB) based format & necessitates a Message Application Program Interface (MAPI) familiar program to view the storage.

We hope now you will able to understand what does MSG file mean and its uses. Keep reading to know how to open MSG extension files with or without MS Outlook.

Structure of MSG file Format

MSG if a message type file used by Microsoft Outlook and Exchange Server. The MSG message internal structure is divided into 3 parts:

  • First is email header which contains header information like: sender, date, subject, recipients, etc.
  • Second is message body that contains the main message parts such as: text, hyperlinks and other values.
  • Third and last is email signature, which identifies the end of a message.

Note: To explore more about MSG file structure, you can open MSG files with a hex editor or notepad++ programs.

What Programs Open .MSG Files?

Open MSG file in Windows Platform :

  1. Microsoft Outlook
  2. Mozilla SeaMonkey
  3. Free MSG File viewers

View MSG files in MAC OSX :

  1. Kupon.BG Klammer
  2. 45RPM MailRaider
  3. Mozilla SeaMonkey

Read MSG File in Linux:

  1. Mozilla Thunderbird
  2. Mozilla SeaMonkey

Software to Open MSG File in iOS:

  1. Kupon.BG Klammer 3