Are you considering a new Email Service Provider (ESP)? The martech landscape has quickly become complex and contradictory at times, and shopping for best-fit technology can inevitably become a long and daunting process. In this white paper, we’ll classify the 5 types of ESPs for you to consider based on the kinds of tech capabilities they offer, who should consider them, as well as some common brand names you’ve likely heard of for each type. Which one is right for you?