E-mail marketing provides a cost-effective way to reach a large audience and build relationships over time. It has response rates 10 times higher than direct mail and allows marketers to track engagement and ensure data integrity. While e-mail usage is growing rapidly, being sent and read on various devices, marketers still underutilize e-mail and allocate less than half of their budget to it despite its relevance compared to new digital channels. E-mail marketing remains an important part of an integrated marketing strategy.