M

mailbox
The set of folders held in the IPM subtree of a messaging user. The mailbox is intended for interpersonal messages. Its folders typically include the Inbox, Outbox, Sent Items, and Deleted Items.
MAPI
(Messaging Application Programming Interface) A messaging architecture enabling multiple applications to interact with multiple messaging systems across a variety of hardware platforms. MAPI is built on the COM foundation.
message
An object containing information that is sent from a sender to one or more recipients or that is posted in a public folder. CDO applications can access a message using the Message object.
message store
A container object that holds folders organized hierarchically. CDO applications can access a message store using the InfoStore object.
messaging user
An object that is capable of sending or receiving messages. A messaging user can be a human user or an application or process. See also authenticated user, unauthenticated user.
method
A procedure that is exposed by an object and performs a specific action.