How Sailthru deploys hundreds of millions of personalized emails every day using PowerMTA.

Sailthru deploys hundreds of millions of automated outbound messages daily. Prior to selecting PowerMTA, Sailthru utilized an open source solution, Postfix. While most US-based ESPs and marketing automation technologies experience a digital messaging rush in the morning and early afternoon, Sailthru personalizes delivery time for each individual user based on when they are most likely to open email and convert. This results in high volumes of messages sent around the clock. Therefore, Sailthru demanded industrial-strength messaging infrastructure that would manage its rising email volume and, above all, required stability and dependability in its deliverability platform.