Email marketing can be a huge payoff- it’s estimated that for each dollar spent in this arena, companies earn nearly $45 dollars in return. That’s a handful of returns on investment (ROI) if you know what you’re doing. But it isn’t easy, and it can be a series of trial-and-error sends before you begin to see payoff. When you contract with an email service provider, or ESP, to launch an email marketing campaign, your goal is to convert those who...