SUMMARY: Do you think it is possible to run an email test in the morning, check your results, and roll out your full campaign that afternoon? Lots of people do. According to email research king Michael Wexler, they may be declaring the wrong winner.
In Part I of our exclusive interview with Wexler, you will learn why you should wait eight hours between test and roll-out. Also includes practical info on how much segmentation you really need to invest in (is one-to-one too much?) and which subject and from lines get more opens these days.