43. A system as recited in claim 22 , wherein the client interface of the content management routine comprises a graphical user interface which displays information and allows for direct client input.
22. A system for creating and distributing at least five hundred individualized multimedia messages over a computer network using an email sent simultaneously, comprising: (a) a computer operatively connected to said network and executing a programmed sequence of instructions; (b) a recipient information access routing within said programmed sequence of instructions for accessing data about a given intended recipient with unique recipient information for each of at least five hundred recipients; (c) a content repository containing multimedia elements that may be combined to form individualized messages with computer files comprising at least one of text and graphics files, and further comprising at least one of audio and video files; (d) a content management routine within said programmed sequence of instructions for retrieving selected multimedia content from the content repository, wherein the process of selecting multimedia content is responsive to information content regarding the given recipient accessed by the recipient information access routine; (e) a multimedia engine routine within said programmed sequence of instructions, for packaging the multimedia content as an individualized message for delivery to the given recipient; and (f) a delivery routine within said programmed sequence of instructions for delivering the individualized message to each of the given recipients including sending an email message simultaneously to each of at least five hundred recipients and wherein at least some of said individualized multimedia content for said at least five hundred recipients are different from at least some other of said individualized multimedia content.