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MAPI File Formats

Last modified: January 16, 2009

Applies to: Office 2010 | Outlook 2010 | Visual Studio

MAPI publishes the formats of various configuration files that clients and service providers use to describe message services and their service providers and forms.

The following table describes these files by name or type:

Configuration file



Contains configuration information for the MAPI subsystem, message services, and service providers.

Files with the .cfg extension

Contains configuration information for a form.

For detailed information about the file format of MapiSvc.inf, see File Format of MapiSvc.inf.

For detailed information about the file format of a form configuration file, see File Format of Form Configuration Files.