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Test different subject lines and email content to find what resonates best with your audience.
Last updated March 23, 2026
Difficulty: Intermediate | Time: 10 min | Tier: Scale & Above
Scale Tier & Above
A/B testing requires a Scale tier subscription or higher.
A/B testing (also called split testing) lets you send two versions of a campaign to a small portion of your audience, measure which performs better, and automatically send the winner to the rest. This data-driven approach takes the guesswork out of email marketing.
Tip
Test one variable at a time. If you change both the subject line and the email body, you will not know which change drove the difference in performance.
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