Why do product blocks disappear in email previews?

Last updated: February 13, 2026

If you're experiencing issues with product blocks or upsell blocks appearing and then disappearing in your email previews, this is likely due to Zaymo's automatic subscription filtering feature.

How Zaymo handles existing subscriptions

Zaymo automatically hides product blocks for products that the customer is actively subscribed to.

When you preview an email using a customer profile that has active subscriptions, any product blocks promoting those same products will be automatically hidden from the preview.

Troubleshooting disappearing product blocks

To resolve this issue and see your product blocks in email previews:

  1. Check the test customer profile you're using for the preview

  2. Verify whether this customer has active subscriptions to any of the products featured in your upsell blocks

  3. Use a different test profile that doesn't have subscriptions to the promoted products, or create a new test profile

  4. Alternatively, temporarily test with products that the customer profile isn't subscribed to

  5. Verify that the products in your product blocks allow one-time purchases in your subscription provider. Products that are configured to not allow one-time purchases will be automatically filtered out and won't appear in previews

Best practices for email testing

When testing email templates with dynamic content:

  • Use test customer profiles that don't have existing subscriptions to the products you're promoting

  • Create dedicated test profiles specifically for email preview purposes

  • Document which products your test profiles are subscribed to avoid confusion during testing

This behavior ensures that your actual customers receive relevant, personalized content without seeing promotions for products they already own.

Known limitations

Automatic product filtering is required

While most users love the automatic product filtering, it is not always the desired behavior. At the moment, Zaymo does not support turning off the product filtering; however, it is on the roadmap.