US Patent 7672999 Transmitting common and unique information selectively to different recipients

A system for enabling the transmission of a prepared message to multiple intended recipients, wherein the information contained in the message is substantially the same as received for all the recipients but differs in parts or portions for certain recipients comprising: a module containing the entire message which includes both the common and unique information to be transmitted and the instructions for selectively providing the information to different recipients; and scheme for sending together from the module all the parts or portions of the information to all recipients, but including means responsive to the instructions, for having selectively different parts or portions of the information received by the different recipients.