The science behind split testing


The fact that split testing is an effective way to improve a brand’s email subject line performance is indisputable. In fact, it is the only reliable, scientific method of improving your opens, clicks, and conversions.

Ask any expert how you can improve your brand’s email marketing ROI
performance and they’ll suggest that you immediately make split testing your subject lines a regular practice. But very few people will tell you how you should be spit testing.

At Phrasee, we’ve made explaining the science behind split testing our mission. We’ve done the research, and we’re ready to share our findings.

Listen to Phrasee CEO and Co-founder Parry Malm in this webinar recording on the science behind split testing. You’ll learn about:

– Experimental methodology.

– How you should be constructing your tests to ensure that you get maximum gains and minimize opportunity cost.

– What you need to do to learn from the tests i.e. taking the results and applying insights to future marketing campaigns.


Learn about what AI-powered copywriting can do for your brand. It’s awesome. We promise.