Setting up A/B tests for Klaviyo signup forms

Emiel Dingemans from Magicianly | Email Marketing·Apr 2026

Demo summary

Shows how to use the 'Create A/B Test' feature in Klaviyo to test different offers (e.g., 20% off vs. mystery discount) and configure manual weight settings.

Step-by-step

Open the signup form in the Klaviyo editor
Click Create A/B Test in the top left corner
Enter a name for the test
Define the variations for Offer A and Offer B
Click Create Test
Select the B version and apply the specific changes to the email opt-in and teaser
Click Continue to test settings
Set the weight to Manual and adjust to 50/50
Select the winner selection criteria

Options

Use automatic weight settings to let Klaviyo decide the winning version
Automatically end the test based on performance

Tips

Use manual weight settings at 50/50 to maintain control over the test
Avoid automatic weighting as Klaviyo may favor a version before there is enough volume to reach a valid conclusion
Do not automatically end the test if you prefer to review the data yourself

All demos from “Klaviyo Email Marketing FULL Course 2026: The Complete Ecommerce System (Step by Step)”

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Watch “Klaviyo Email Marketing FULL Course 2026: The Complete Ecommerce System (Step by Step)” →

A/B test a campaign

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