The document discusses how email marketing is still an effective marketing channel despite the rise of social media. It argues that email provides targeted, personalized messages directly to recipients and sees high open rates compared to other channels. Additionally, email delivers the best return on investment of any marketing channel, at $28 for every $1 spent. The rest of the document provides tips for effective email marketing, including leveraging what email does best like personalization and automation, while also learning from trends in social media like visual and mobile-friendly design.