Overview
Boost your email performance with A/B Testing in the Email Campaign Builder. A/B testing lets you send up to six variations of your email (either the subject line or the content) to a portion of your audience.
ZipLeads automatically picks the winning version based on engagement, such as open rate or click rate. It then sends that version to the rest of your recipients.
What Is A/B Testing?
A/B testing (also called split testing) compares two or more versions of an email to see which one performs better.
By testing small changes, like subject lines or content, you can learn what works best with your audience and improve engagement over time.
Why Use A/B Testing
Optimise engagement: Find out which email version gets more opens or clicks.
Data-backed decisions: Take the guesswork out by using how your recipients really behave.
Improve deliverability: Refine subject lines and send times for better inbox placement.
Boost conversions: Use what you learn to keep improving your email strategy.
⚙️ How to Enable A/B Testing
Open your Email Campaign in the Email Builder.
Turn on the Enable A/B Testing toggle in the left panel.
Choose the Test Type:
Email Subject: Test different subject lines to see which gets more opens.
Email Content: Test changes to the content, such as images, buttons or copy.
Set the Test Duration (for example, 4 hours or 8 hours).
This is how long the test runs before a winner is chosen.
Choose the Number of Variations (up to 6).
Adjust the Test Size using the slider.
Example: If you test two variations (A and B), you might send each one to 25% of your audience and keep the other 50% for the winning version.
Add your Subject Variations or Content Variations.
If you like, use Content AI to create variations for you.
Choose your Winning Criteria:
Unique Open Rate → Best for subject line tests.
Unique Click Rate → Best for content tests.
When you're done, click Send or Schedule. ZipLeads runs the test and sends the best-performing version to the rest of your audience.
Winning Criteria Explained
Unique Open Rate: The version with the most unique opens wins.
Unique Click Rate: The version with the most clicks wins.
When the test duration ends, the winning email goes out automatically to the rest of your audience.
Frequently Asked Questions
Q: What's the maximum number of variations I can test?
You can test up to six variations at a time.
Q: Can I test both subject lines and content in the same A/B test?
No. You can choose only one test type per campaign, either Email Subject or Email Content.
Q: Will the results appear in Analytics?
Yes. You can see A/B test results for open rate, click rate and the winner in your Campaign Statistics dashboard.
Q: Can I reuse the winning variation for future campaigns?
Absolutely! Duplicate the winning version and use it as a starting point for future campaigns.