DataClass: A type of MetadataObject that represents a type of a business data object obtained from a line-of-business (LOB) system. Instances of a DataClass have transient identity. DataClasses are contained by LobSystems and Methods.
Deferred Action Folder (DAF): A special folder where a server places all Deferred Action Messages and Deferred Error Messages to be acted on by a client. The Deferred Action Folder is not visible to a user.
Deferred Action Message (DAM): A hidden message indicating to a client that it needs to execute one or more rules on another user-visible message in the store.
Deferred Error Message (DEM): A hidden message indicating to a client that it needs to present the user with an error indicating that a server-side rule failed to execute.
delegate: A user or resource that has permissions to act on behalf of another user or resource.
delegate access: The access that is granted by a delegator to a delegate and is used by the delegate to access the delegator’s account.
Delegate Information object: A Message object that contains properties specifying delegate access settings for resources in a delegator’s mailbox.
delegate rule: A server-side rule that is used to send mail to delegates on behalf of a delegator.
delegator: A user or resource for which another user or resource has permission to act on its behalf.
Deleted Items folder: A special folder that is the default location for objects that have been deleted.
delivery receipt: A report message that is generated and sent by a client or server to the sender of a message or another designated recipient when an email message is received by an intended recipient.
Department object: An Address Book object that describes a department within an organization.
departmental group: A distribution list that describes a department within an organization.
dictionary: A collection of key/value pairs. Each pair consists of a unique key and an associated value. Values in the dictionary are retrieved by providing a key for which the dictionary returns the associated value.
display name: A text string that is used to identify a principal or other object in the user interface. Also referred to as title.
display template: A template that describes how to display or allow a user to modify information about an Address Book object.
distribution list: A collection of users, computers, contacts, or other groups that is used only for email distribution, and addressed as a single recipient.
Document object: A Message object that represents a single file, such as a document generated by a word-processing application. The Message object contains the file as an Attachment object and includes additional properties to describe the file.
double-byte character set (DBCS): A character set (1) that can use more than one byte to represent a single character. A DBCS includes some characters that consist of 1 byte and some characters that consist of 2 bytes. Languages such as Chinese, Japanese, and Korean use DBCS.
Draft Message object: A Message object that has not been sent.
Drafts folder: A special folder that is the default location for Message objects that have been saved but not sent.