Editing MAPI (section)

== Details ==
MAPI uses functions loosely based on the [[X.400]] XAPIA standard.  It includes facilities to access [[Mail transfer agent|message transport]]s, message stores, and [[Directory services|directories]].

While ''Simple MAPI'' (SMAPI) is a subset of 12 functions which enable developers to add basic messaging functionality, ''Extended MAPI'' (EMAPI) allows complete control over the messaging system on the client computer. This includes creation and management of messages, plus management of the client mailbox, and service providers. 

Simple MAPI is included with [[Microsoft Windows]] as part of [[Outlook Express]]/[[Windows Mail]] while the full Extended MAPI is included with [[Microsoft Outlook]] and [[Microsoft Exchange Server|Exchange]].

In addition to the Extended MAPI client interface, programming calls can be made indirectly through the Simple MAPI API client interface, through the ''Common Messaging Calls'' (CMC) API client interface, or by the object-based ''[[Collaboration Data Objects|CDO]] Library'' interface.  These three methods are easier to use and designed for less complex messaging-enabled and -aware applications. (Simple MAPI and CMC were removed from Exchange 2003.)

MAPI was originally designed by [[Microsoft]].  The company founded its MS Mail team in 1987, but it was not until it acquired [[Consumers Software]] in 1991 to obtain ''Network Courier'' that it had a messaging product. Reworked, it was sold as MS PC Mail (or [[Microsoft Mail]] for PC Networking).  The basic API to MS PC Mail was later known as MAPI version 0 (or ''MAPI0''), to differentiate it from "true" MAPI.