Zaymo's in-template A/B test lets you test the interactive version against a control with just the click of a button.

Unlike an A/B test in Klaviyo where you create two different email templates, a Zaymo A/B test runs inside of a single email template--no conditional split in a flow or A/B test in a campaign required. Your Klaviyo flow structure can remain as-is and the test will function properly. The Zaymo email template is smart and will randomly show the non-interactive version to 50% of the population.

The results of the A/B test are shown in Zaymo's analytics page.

Why use a Zaymo A/B test?

1. Engagement data - Zaymo A/B tests track in-email engagement. Klaviyo can only track link clicks

2. Ease of use - The test happens within a single template. No need to set up separate messages in Klaviyo

When to use Zaymo A/B test vs. Klaviyo split

Use Zaymo's native A/B test when:

• Testing a Zaymo-enabled template against a non-Zaymo version

• You need visibility into in‑email engagement (clicks + interactive actions)

• You want A/B results consolidated in one place

Use a Klaviyo split when:

• Comparing two fully Zaymo‑enabled variants

The native Zaymo A/B test is recommended for testing Zaymo vs. non‑Zaymo templates because it avoids Klaviyo's attribution blind spots for in‑email actions and provides richer engagement data.

How do I choose the control and treatment content?

A/B tests test the incremental change from changing one variable, so they require both a control and a treatment version.

Control email in the A/B test

The control in this test is simply the fallback version of the email. At the moment, you cannot edit the fallback version of the email in Zaymo. Instead, the fallback version of the email is the original Klaviyo email you converted.

Treatment email in the A/B test

The treatment version of the email is the email you built with the Zaymo block.

How do I set up the A/B test?

Setup

1. Open the flow in Zaymo and click the email to open its details panel.

2. Under A/B test, check Zaymo A/B test. Zaymo asks you to confirm, then the change goes to the flow in Klaviyo right away.

3. Click Preview test content to see the two versions.

Once the test is running, View test results in the same panel takes you to its results.

You can't turn on a Zaymo A/B test for an email that's already part of a Klaviyo A/B test.

How do I measure the results?

Choose relevant conversion metrics

You don't need to pick metrics. Zaymo chooses the Klaviyo metrics to track for the test automatically, based on the blocks in your email.

Important limitation for discount‑based A/B tests: if your test includes discount codes, Zaymo mimics the discount effect rather than triggering the actual Shopify discount codes. This means traditional Shopify coupon code tracking won’t work; instead, rely on the Klaviyo conversion metrics Zaymo tracks for the test to accurately track the success of discount‑based campaigns.

See results in Zaymo analytics dashboard

Once the email is live in Klaviyo, you can track the outcome in the message analytics page.

The Zaymo Analytics page shows interaction data for Zaymo elements (clicks and in‑email actions on dynamic blocks) plus basic message context. For full send/open metrics and non‑Zaymo link clicks, refer to Klaviyo's analytics dashboard.

You can identify an email as part of an A/B test by checking the analytics page. Next to the template title, a test tube icon labeled "A/B" indicates that an A/B test is currently active for this email. How to view which version won the test?

How do I turn off Zaymo A/B tests?

Open the flow in Zaymo, click the email, and uncheck Zaymo A/B test in its details panel. You can also open Template settings in the builder and click Turn off. Either way, the change goes to the flow right away and everyone then gets the interactive version.