Epsilon is one of the leading direct marketing agencies in the United States. The company provides strategic consultation, proprietary data, predictive modeling, and database and loyalty technology services. It also offers Web design, e-mail deployment, search engine optimization, and brand and promotional development solutions. Epsilon is also one of the world's largest permission-based e-mail marketers. The company features Purple@Epsilon, marketing technology and data services divisions. It serves the financial, insurance, retail and pharmaceutical industries. Epsilon s Abacus solution maintains one of the world's largest cooperative databases with more than 5 billion transactions from over 100 million households. The company s clients include Fender, Masune, KeyBank, Northwest Airlines and Walter Drake.