The authoritative reference on MAPI programming is back in print. Available now on CD-ROM, this book is a must-have for anyone writing MAPI components for Microsoft Exchange, or any MAPI system. Features a complete exposition on the MAPI architecture, interfaces, data structures, and objects. Includes a working mail system, 3 clients, address books, store providers, and transports. Over 150,000 lines of well-commented source code included.