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What is the .MSG File Extension?

.MSG File Extension Description:

Files with the .msg file extension are the messages that are received or sent through Microsoft's Outlook or Outlook Express. Mail messages created on e-mail applications on Windows are assigned with MSG file extension, which is categorized as a text file. Files with the .msg file extension is not limited though to an email message, but can also be a note, task or calendar item created on any e-mail program.

The MSG file extension is supported on other programs that use the Messaging Applications Programming Interface (MAPI). Aside from Outlook and Outlook Express, several other MAPI-compatible applications can be used to open files with the .msg file extension, such as MSG File Viewer and Assessor from Priasoft and the MsgViewer Pro from Encryptomatic.

Mail messages with MSG file extension are more easily downloaded and read in plain text format. Microsoft Outlook and Outlook Express can open files with the .msg file extension and then export the messages into the following formats: HTML, PDF, JPG, TIFF, BMP, PNG, GIF, MHT, EMF, EXIF, WMF or TXT.

Files with the .msg file extension are capable of storing mail messages in read-only state. This contributes in email privacy as well as in protecting the computer from malware attached to email messages.

Applications like Priasoft MSG file library generally handle files with the .msg file extension by implementing properties and methods to allow data access. The MSG file extension usually contains data with attributes like named and unnamed properties, recipients, headers, attachments and HTML.

Files with the .msg file extension that are created by Outlook are written as structured binary files. Specifically, the MSG file extension is a proprietary binary email format that identifies COM structured storage OLE2 compound documents.

Files with the .msg file extension can actually be called "DocFile". These message files can be opened as binary file and viewed as a sequence of tagged data items.

Author: Microsoft Corporation
Author URL:
Related Applications: Outlook, Outlook Express, MSG FileViewer, and MSG ViewerPro
Common Path: C:/ Program Files


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Do you have errors with .MSG files?

The Frequent Cause of .MSG files Errors to Occur:

Upon experiencing errors with .MSG files you are in all likelihood receiving a severe Windows file system error - your error can be the outcome of corruption to your program registry and action is needed to repair it immediately to prevent further corruption to your file system. Risks include system device damage, blue screen errors and fatal crashes.

.MSG files Errors - Common Symptoms:

.MSG files errors produce a range of symptoms, including: pc locks while shutting down or starting up, applications freeze up, reduced pc speed, built-in speaker beeping, trouble loading documents, slow system behaviour and failure installing software.

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