Article
Test subject lines and send times
Run A/B tests on email subject lines and delivery timing to improve open rates across your nurture flows.
Updated 1 September 2026
Summary
This lesson walks you through A/B testing your emails systematically. You will learn how to isolate variables, set up tests properly, and build a testing cadence that steadily improves your open and click rates over time.
Subject lines and send times are two of the easiest things to test and two of the most impactful. This chapter shows you how to run clean A/B tests on both, interpret the results correctly, and apply what you learn across all your nurture sequences. You will build a habit of continuous small improvements that compound into significantly better email performance over time.
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