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MAPI Features and Architecture

Last modified: April 09, 2009

Applies to: Office 2010 | Outlook 2010 | Visual Studio

Messaging API (MAPI) is composed of a set of common application programming interfaces and a dynamic-link library (DLL) component. The interfaces are used to create and access diverse messaging applications and messaging systems, offering a uniform environment for development and use, and providing true independence for both. The DLL contains the MAPI subsystem, which manages the interaction between front-end messaging applications and back-end messaging systems and provides a common user interface for frequent tasks. The MAPI subsystem acts as a central clearinghouse to unify the various messaging systems and shield clients from their differences.

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