E-mail marketing helps you interact with your audience, promote your brand and increase sales. Especially important are email campaigns designed for mobile devices - a quality known as responsive design. "That's why, as an entrepreneur, I believe that building successful email marketing campaigns has never been more important. E-mail marketing is the highly effective digital marketing strategy for sending e-mails to prospects and customers. Marketing emails turn potential customers into customers and turn one-time buyers into loyal, enthusiastic fans.