A/B testing makes your email marketing even more effective by allowing you to test two versions of an email with a small group of your subscribers to see which version performs better. The “winner” of the test is then sent to your larger email list. You can run these tests yourself with an email marketing tool like Constant Contact, or if you have an ecommerce business, use our Ecommerce Pro Plan to rely on A.I. and predictive analytics to run your tests for you.