Digital marketing encompasses many channels in order to pack a big punch online. It includes website marketing, SEO, Pay-Per-Click advertising, content marketing, social media marketing, video marketing, SMS messaging, and yes, email marketing. While some of these channels are seemingly more effective than others, research shows that the response rate of each fluctuates. Depending on your industry and whether your company is B2C or B2B, email marketing is actually preferred across client and customer bases.