E

Electronic Data Interchange

(EDI) A standard for integrating data with various native formats into a message, which has been defined by the International Telegraph and Telephone Consultative Committee (CCITT) standards body, now called the International Telecommunications Union (ITU), and is implemented in the X.435 message-handling standard.

entry identifier

A binary value that distinguishes a MAPI object from other objects of the same type and permits clients and providers to open and access the object. Part of the entry identifier represents the service provider that defines the object, and part represents the individual object. Entry identifiers allow the MAPI subsystem to determine which service provider should handle a particular object. An object's entry identifier is stored in its PR_ENTRYID property. See also compound entry identifier, one-off entry identifier, one-off template entry identifier, long-term entry identifier, short-term entry identifier, record key, search key.

entry point function

A function in a message service dynamic-link library (DLL) called by MAPI at logon time for configuration purposes. For more information, see Implementing a Service Provider Entry Point Function.

event

A change in an object's state that can generate a notification, such as a critical error occurring or the object being modified.

event mask

A bitmask that is used to indicate one or more types of event notifications. Advise sink objects register for specific notifications using the event mask. See also advise sink, notification.

extension

See client extension, Common Messaging Calls data extension.