Klaviyo x Amazon Integration: Convert Buyers Into Loyal Customers

If you sell through Amazon, chances are you're missing out on valuable post-purchase data. While Amazon helps drive conversions, it doesn’t let you access the customer relationships you need to grow.

That’s where Klaviyo steps in.

By integrating Amazon’s Buy with Prime (BWP) with Klaviyo, you can:

• Collect customer emails and phone numbers

• Automate personalised post-purchase flows

• Segment Prime buyers for targeted offers

In this guide, we’ll walk you through:

• What the Klaviyo x Amazon integration does

• How to set it up (step-by-step)

• Real-life use cases and best practices

• Common mistakes to avoid

Let’s dive in.

What Is Klaviyo Amazon Integration?

Buy With Prime Overview

Buy with Prime (BWP) lets shoppers check out on your DTC site using their Amazon credentials, while Amazon handles fulfilment and delivery.

Customers see the familiar Prime badge and benefit from fast, free shipping. But here’s the key: the purchase happens on your site. That means you keep control over the customer journey, brand experience, and—most importantly—data.

Buy with Prime helps reduce friction, increase conversion rates, and build trust, all without giving up control to Amazon.

How Klaviyo Fits In

When you connect BWP with Klaviyo, the customer events from Prime orders flow directly into your Klaviyo account.

You’ll unlock events like:

• Order Placed: When the customer checks out with Buy with Prime

• Order Fulfilled: When Amazon ships the order

• Items Purchased: Line item details from the transaction

With these events, you can:

• Trigger email/SMS flows based on Prime orders

• Segment customers by fulfilment method or product

• Personalise post-purchase journeys to boost LTV

For example, if someone buys a supplement with BWP, you can trigger a replenishment reminder 30 days later. Or, if a customer buys twice through BWP, you can tag them as a VIP and invite them to your loyalty programme.

5 Reasons Amazon Sellers Should Use This Integration

Integrating Buy with Prime (BWP) with Klaviyo unlocks powerful ways to grow beyond a single Amazon sale. Here’s how it helps you take back control and drive long-term value.

1. Keep Your Customer Data

When a shopper buys through Amazon, they often lose access to their data, making it hard to follow-up, remarket, or build loyalty.

With Klaviyo + BWP:

• You collect email addresses and phone numbers at checkout.

• Customers are added to your owned marketing list, not Amazon’s.

• You gain visibility into order-level and profile-level data for every BWP buyer.

2. Automate Retention Flows

Don’t let post-purchase silence kill your repeat sales.

With fulfilment data from Amazon synced into Klaviyo, you can:

• Trigger thank-you emails once the order is shipped

• Send delivery confirmation SMS messages — if SMS is enabled in your Klaviyo account.

• Launch review requests or reorder reminders at the right time

3. Segment Smarter

Generic email blasts don’t convert. But with BWP data, you can segment your audience based on real purchase behaviour.

Build segments like:

• “Prime buyers only” – tailor flows just for this cohort

• Delivery method = Amazon – compare against DTC shipping

• Top SKUs purchased via BWP – retarget buyers with bundles or upgrades

4. Drive Repeat Purchases

Your first sale is just the beginning. Use Klaviyo’s automation to turn BWP buyers into loyal repeat customers.

Use tactics like:

• Second-order discounts for Prime buyers to increase lifetime value

• Cross-sell offers triggered by specific items purchased via BWP

• Back-in-stock alerts for items Prime customers showed interest in

5. Improve Personalisation

BWP order data lets you personalise messages beyond just “thank you.”

Use dynamic blocks to show:

• Product-specific tips or recommendations

• Delivery timelines tied to Amazon fulfilment

• Related items based on BWP history

Step-by-Step – How to Connect Klaviyo to Amazon Buy With Prime

Before You Begin

• Ensure you have admin access to both Klaviyo and your Buy with Prime account

• This integration is supported via Sixads

Add the Integration in Klaviyo

• In Klaviyo, go to Integrations

• Click Add Integration, search for Amazon Buy with Prime

  
  

• Authorise permissions between Klaviyo and Amazon

  
  

• Wait for the confirmation message: "Buy with Prime successfully connected"

  
  

Source: Klaviyo 

Monitor the Data Sync

• BWP data syncs in real-time (no historical data available)

• Events to monitor:

  Order Placed

  Order Fulfilled

  Product Purchased

• View these in the Activity Feed or Analytics tab

Contact Support if Needed

• Klaviyo support helps with flow setup and integration errors

• Sixads support handles technical linking to Amazon

• When submitting a ticket, include:

  • Klaviyo account ID

  • BWP store ID

  • Screenshots of error or sync issue

Use Case Examples for Prime-Fulfilled Orders

Once you’ve connected Buy with Prime (BWP) to Klaviyo, you can build powerful flows that turn one-time Amazon buyers into loyal brand fans. Below are five high-impact automation examples you can set up using BWP data synced into Klaviyo.

Post-Purchase Flow

Prime orders deserve great post-purchase experiences—even if Amazon handles the fulfilment.

Here’s how to do it:

• Send a thank-you message once the BWP order is marked as fulfilled.

• Ask for a product review to build social proof.

• Recommend related products using dynamic blocks based on the item purchased.

• Delay the email until the "BWP Order Fulfilled" event is triggered, ensuring the message arrives after delivery.

Replenishment Flow

This flow helps customers repurchase consumable or repeat-use products right when they’re likely to run out.

How to set it up:

• Use product category logic to time the email (e.g. 30 days for vitamins, 60 days for cleaning supplies).

• Trigger a “Reorder Now” email or SMS using the item purchased in the BWP order.

• Include a CTA button linking to the DTC product page.

For more tactics, check out our guide on Klaviyo Replenishment Flow: 5 Strategies for Repeat Sales (2025).

Loyalty Flow

Identify your most engaged Prime buyers and reward them.

Here’s how:

• When a customer places 2 or more BWP orders, tag them in Klaviyo as "VIP".

• Send an automated flow offering:

  • A referral code they can share with friends

  • A loyalty discount or early access to new products

Review Request Email

Amazon may capture reviews, but that doesn’t mean you can’t ask too.

Best practices:

• Set the email to trigger 7–10 days after the order is fulfilled, giving time for delivery and product use.

• Include the product image dynamically, pulled from the item in the BWP event.

• Add a “Leave a Review” CTA linking to either your DTC product page or the product’s Amazon listing.

Win-Back Flow for Prime Buyers

Not every Prime buyer returns. A win-back flow helps bring them back before they forget your brand.

Steps:

• Create a trigger for “No BWP Order in last 60 days”.

• Send a personalised message reminding them of their last order and offering something new.

• Use popular SKUs or seasonal promotions to re-engage them.

  
  

Source: Klaviyo 

Need ideas for re-engagement? Read our Winback Flow: 6 Tips To Re-engage Lapsed Customers.

Abandoned Cart Flow

Just like your DTC store, you can recover lost sales from Buy with Prime users who start checkout but don’t finish.

How to set it up:

• If your setup tracks checkout initiations via BWP, you can trigger an abandoned cart flow using the Started Checkout event combined with a filter for order_channel = Prime and no placed order within a set time (e.g. 1 hour).

• Include a reminder email with product images and a “Complete My Order” CTA.

• Optionally add a second email with a limited-time offer or FAQ.

  
  

Source: Klaviyo 

Want more abandoned cart tactics? Explore our Klaviyo's SMS Abandoned Cart: The Ultimate Guide (2024).

Integration Methods Compared (for Non-BWP Users Too)

You don’t need to use Buy with Prime (BWP) to benefit from syncing Amazon order data into Klaviyo. There are multiple ways to do it—each with a different setup time, cost, and automation depth.

Below is a breakdown of five integration methods, including who each is best suited for:

Best Practices for Syncing Amazon Orders into Klaviyo

Integrating Amazon orders into Klaviyo is powerful—but only if your data is clean, structured, and tagged correctly. Follow these best practices to avoid sync errors and unlock smarter segmentation.

Field Mapping: Connect Key Order Events

When syncing Buy with Prime (BWP) data into Klaviyo, map the right properties to capture order activity in a usable way.

Essential fields to map:

• Order Fulfilled → Custom Property: Tracks when Amazon ships the product

• SKU / Product Name: Helps identify product type for segmentation or replenishment flows

• Delivery Time: Use for personalised post-purchase messaging or timing reviews

• Order Channel (Amazon vs DTC): Critical for measuring performance by channel

Pro tip: Use consistent naming conventions like order_channel = Amazon or fulfilled_by = BWP to simplify segmentation and reporting.

Tagging Amazon vs DTC Orders

Don’t treat all orders the same. Tag your Prime orders clearly so you can segment flows and analyse performance across different fulfilment methods.

Smart tag ideas:

• "Prime" Tag: Add to every BWP order for easy filtering

• "BWP_VIP": Add if the customer has placed 2+ Prime orders

• "DTC_Fulfilled": Apply to manually fulfilled store orders

Use these tags to:

• A/B test flows (e.g. Prime vs DTC post-purchase messaging)

• Trigger Prime-specific offers or reminders

• Monitor repeat purchase trends by channel

Learn more about setting this up in Mastering Klaviyo Custom Properties in 12 Minutes.

Data Clean-Up Tips: Keep Profiles Accurate

Dirty data can break flows and make segments unreliable. Use Klaviyo’s built-in tools to stay organised.

Monthly data hygiene checklist:

• Check for duplicate emails: Use Klaviyo’s Profile Merge Rules to combine contacts with the same address

• Review tag accuracy: Spot-check profiles to ensure Prime tags are being applied consistently

• Audit flow triggers: Make sure no flows are unintentionally triggering for the wrong order channel

Bonus tip: Set up a monthly “Data Hygiene” calendar reminder so you never fall behind.

Common Mistakes (and How to Avoid Them)

Even with the right setup, small mistakes can break flows or block you from converting Prime buyers into loyal customers. Here are the most common issues—and how to fix them fast.

FAQs

1. Can I track Amazon returns or cancellations in Klaviyo?

•  Not currently. BWP does not sync return or cancellation events to Klaviyo. Use order fulfilment as your main flow trigger.

2. Does Buy with Prime work on all e-commerce platforms?

•  BWP is designed primarily for Shopify and BigCommerce. For other platforms, check Amazon's compatibility guide.

3. What if I use FBA but not Buy with Prime?

•  This integration supports Buy with Prime only. For FBA-only sellers, consider syncing order data manually via CSV or using a tool like Zapier.

4. Will Klaviyo flows delay emails if Amazon is slow to fulfil an order?

•  Yes. You can set flows to wait until the “BWP Order Fulfilled” event, so emails aren’t sent before delivery.

5. Can I track revenue from Buy with Prime orders in Klaviyo reporting?

•  Yes—if BWP events are mapped to custom metrics like purchase value or item count, you can view revenue inside Analytics or flow performance.

6. Do I need developer support to set this up?

• No coding needed. The BWP integration via Sixads is plug-and-play and takes about 20–30 minutes to set up.

Conclusion

If you’re selling with Amazon but not integrating with Klaviyo, you’re losing out on your most valuable asset—customer data. Buy with Prime helps boost conversions on your site, but without Klaviyo, you can’t follow up, build loyalty, or increase lifetime value.

With this guide, you now know how to connect BWP to Klaviyo, build powerful post-purchase flows, and avoid common setup mistakes. The best part? You’ll own your customer relationships—without sacrificing the ease of Prime fulfilment.

The end result: more control, more conversions, and a retention engine built to scale.

Key Takeaways

• Get Your Data Back: BWP + Klaviyo gives you full access to customer emails and order details.

• Automate Like a Pro: Trigger retention flows, reviews, and reorders with real-time fulfilment data.

• Segment Smarter: Use tags like “Prime Buyer” to personalise messages and A/B test strategies.

• Boost Repeat Orders: Launch replenishment and loyalty flows that keep customers coming back.

• Avoid Setup Pitfalls: Map fields correctly, clean your data, and always test your flows before launch.

Frustrated with syncing your Amazon data into Klaviyo?

We’ll configure it properly, so you can turn every Prime order into repeat revenue. Click here to get a free audit from our expert.