Klaviyo and Rebuy.

Rebuy is a personalisation and upsell app that recommends products on the store, in cart and after checkout. It can work alongside Klaviyo, but what data passes between them depends on your setup, so confirm in the Rebuy and Klaviyo documentation. The practical aim is to keep onsite recommendations and email offers consistent rather than competing.

What Rebuy sends to Klaviyo.

• Recommendation engagement. Where shared, signals that a shopper interacted with an onsite recommendation.
• Cart additions from recommendations. Items added through an upsell, which show up as ordinary cart and order activity.
• Order activity. Placed orders including upsell items, used for segmentation and post purchase flows.
• Product interest. Which items a person looked at or added, which can improve email recommendations.
• Customer data. Profiles and purchase history that either tool may use to personalise.

Flows it enables.

• Post purchase cross sell

  Recommends complementary items after an order, using what was actually bought.

• Abandoned cart with relevance

  Shows the left items and sensible companions rather than a long list of random products.

• Replenishment reminder

  Prompts a reorder for consumable products based on typical use, where the timing is known.

• Browse follow up

  Reaches visitors who showed interest in a category with a short, relevant selection.

Setup order.

1. 1. Check the data shared

   Read the current documentation for both tools to see what passes between them.

2. 2. Connect where supported

   Follow the documented route to link them, if one exists for your setup.

3. 3. Test an upsell order

   Add an upsell item and confirm it appears correctly in order data on the profile.

4. 4. Align the offers

   Make sure onsite and email offers do not contradict each other.

5. 5. Review the recommendation logic

   Check the products shown make sense for the person and are in stock.

6. 6. Build and test the follow up flows

   Start with post purchase cross sell and verify it avoids items already bought.

Common pitfalls.

• Email and onsite offers showing conflicting discounts.
• Recommending items the customer just bought.
• Pushing out of stock products.
• Too many recommendations in one message.
• Assuming shared data without testing.

Apps and Klaviyo both change their screens and options over time, so confirm names against what you see and check each app's own documentation for current details.

Want this wired up and tested for you? See our email flows & automation service or book a free audit.