Joel Book is a Principal in the Market Research & Education Group of ExactTarget, a global provider of interactive marketing solutions for customer engagement using email, mobile, and social media. With more than 30 years of experience in database marketing, Joel combines proven strategies and tactics for customer development and retention with contemporary digital marketing and social media technology to teach organizations how to attract new customers, aid the customer's decision-making process, and drive repeat purchases. In 2009, Joel was voted one of the "50 Most Influential People in Sales Lead Management" by the Sales Lead Management Association. As a consultant, Joel has worked with top B2B and B2C brands, including Microsoft, Hasbro, Peterbilt Motors, Agilent Technologies, and Purina. When he's not speaking or teaching, Joel shares his perspective on strategies and tactics for successful one-to-one marketing in his blog, Email Marketing by the Book.