Using Email to Accelerate Marketing and Sales Performance discusses how email can be used throughout the customer lifecycle from attracting new customers to the website to retaining existing customers. It provides examples of how companies like Best Buy, Motorcycle Superstore, Expedia, and Hitachi use personalized email communications to engage customers, aid in the buying process, and drive repeat business. The document also discusses how social media and email can be combined to amplify messaging and attract new customers, as shown in Papa John's example.