Testing is a cornerstone of email marketing. Savvy email marketers test everything, and often more than once. One method of testing, A/B testing, is a cornerstone of high performing email campaigns, and Site Impact does a lot of it. But what is it, and how does it work? We’ve written about A/B testing in depth, but today we’re just going to go over the basics. By incorporating more A/B testing into your development process, you’ll be able to improve your results consistently fr...