T

table

A MAPI object that provides access to a summary view of object data in row and column format. Tables implement the IMAPITable : IUnknown interface. Each row represents an instance of an object; each column represents a property on that object. See also associated contents table, attachment table, contents table, display table, hierarchy table, message service table, message store table, one-off table, profile table, provider table, recipient table, standard contents table, status table.

Telephony Application Programming Interface

(TAPI) A set of functions that allows applications to use telephone lines for transporting data across a network without requiring information on details of how the transport process works.

template

A common dialog box that is used for creating new address book entries, such as a one-off address, of a particular type. A template can be viewed as an entire schema that specifies the properties for the dialog box and the code that relates them.

template identifier

An entry identifier for a recipient that enables its address book provider to control its behavior if it is copied into a different address book container. A template identifier can support a messaging user or a distribution list and allows the destination provider to access the original provider's implementation. The template identifier is held in the recipient's PR_TEMPLATEID property. For more information, see Address Book Identifiers.

tightly coupled

Describes a relationship between two or more providers that enables them to communicate directly with each other without using all of the interface provided by MAPI. A tightly coupled message store provider and transport provider can bypass the MAPI spooler. A tightly coupled address book provider and transport provider can pass a recipient between them using only an entry identifier and without opening a property interface.

TNEF

See Transport-Neutral Encapsulation Format.

transmittable property

A property that is sent along with the message it is associated with. Transmittable properties are those that apply in both the sending and receiving environments, such as PR_IMPORTANCE and PR_RTF_COMPRESSED. See also nontransmittable property.

Transport-Neutral Encapsulation Format

(TNEF) A MAPI-defined method of passing MAPI message properties that are not supported by a messaging system. The outbound transport provider invokes the method to bundle all the unsupported properties into a single binary stream. The transport provider may then have to encode the stream into a format its messaging system can handle. The stream accompanies the message through the transport process as an attachment, is decoded if necessary by the inbound transport provider, and is finally passed to TNEF to reconstitute the MAPI properties. See also property.

transport provider

A MAPI service provider object that is responsible for transferring messages between a message store and an underlying messaging system that delivers the messages. Transport providers implement the IXPLogon : IUnknown and IXPProvider : IUnknown interfaces. For more information, see Developing a Transport Provider.