Rizzi is based in Burlington, Mass. ???They???re sending me irrelevant e-mails week in and week out,??? said Rizzi, president-CEO of e-Dialog, which provides e-mail marketing services and whose clients include Dell, OfficeMax, the NFL and Petco. ???United is a great brand doing bad e-mail.??? While properly targeting prospects is the Cri de Coeur of e-mail campaigns, too many sales and marketing d