This year, email marketing is going to remain in the mainstream. According to McKinsey, email is 40 times more effective at acquiring new customers than social media. Plus, based on our internal research, 92% of adults use email, so expect more results by focusing on this digital channel. Since emails deliver the highest return on investment (ROI) for marketers compared to all other digital platforms, take time to develop an email marketing best practices to follow. By 2020, the number…