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Supplementary Information for Messages

In addition to its fields, a message also carries other information.

Address Information

Before sending a message, a program adds these two pieces of address information to the message:

•	The subject (also called the send subject) of a message directs it to its destinations.

•	In contrast, the optional reply subject of a message is a return address, to which recipients can send reply messages.

Certified Delivery Information

Certified message delivery (CM) features add more information to a message:

•	Before sending a message using a certified delivery (CM) transport, a program can set a time limit for certified delivery guarantees on the message.

 

When a program sends a message using a CM transport, the transport automatically labels the outbound message with two additional pieces of CM information:

•	The sender name—that is, the correspondent name of the CM transport.

•	The sequence number of the message.

See Also

Labeled Messages

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