From clever subject lines to personalized content, here’s what you should know about crafting emails that drive engagement and maximize return on investment. When your inbox is flooded with emails, what prompts you to open one promoting a product, service or business? Is it a too-good-to-be-true deal? Or is it one that offers a timely tip? Does a more personalized email marketing approach get you to click for more? I’m a sucker for a good deal, so that’s one way to get me.