Reference : Where you can get MAPI reference, samples for Outlook 2010?

You can get the MAPI reference for Outlook 2010 using MSDN: https://msdn.microsoft.com/en-us/library/cc765775(office.14).aspx

MAPI for Outlook 2010 provides a set of interfaces, functions, and other data types to facilitate the development of Outlook 2010 messaging applications. Applications and transports use MAPI to manipulate e-mail data, to create e-mail messages and the folders to store them in, and to support notifications of changes to existing MAPI-related data.

Something related, that if you’re interested and want to try to use…

• Getting Started with the Outlook 2010 MAPI Reference: Provides information about the various reference and conceptual resources in the Outlook 2010 MAPI Reference.
• MAPI Samples : Provides sample applications.
• MAPI Concepts: Provides a guide to understanding and programming with MAPI.
• MAPI Reference : Provides references to MAPI programming elements

Happy programming!!