Email marketing is one of the most powerful channels you can use for delivering targeted content to your customer base. Even in its most basic form, email marketing can produce ROIs of up to 4300% (so $43 in revenue for every $1 spent). That’s pretty incredible all on its own and certainly something to brag about. But a truly targeted message based on what you know about your customer will yield even higher results. The best way to do this is with dynamic content.