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Published 06 June 2025 in Ecommerce

How to Set Up Klaviyo Abandoned Cart

Abandoned cart emails represent one of the most powerful tools in your eCommerce arsenal, with nearly 70% of shopping carts being abandoned according to research from the Baymard Institute.

by Tyson

Abandoned cart emails represent one of the most powerful tools in your eCommerce arsenal, with nearly 70% of shopping carts being abandoned according to research from the Baymard Institute. Setting up an effective abandoned cart flow in Klaviyo can transform these lost opportunities into recovered revenue through strategic automation and personalized messaging. This comprehensive guide will walk you through every aspect of creating, optimizing, and maximizing your abandoned cart recovery strategy.

What is an Abandoned Cart Flow in Klaviyo

An abandoned cart flow is a sequence of automated messages sent to customers who added items to their shopping cart but failed to complete their purchase. These flows serve as gentle reminders to potential customers about products they showed interest in but didn’t buy. Unlike your eCommerce platform’s default abandoned cart emails, Klaviyo provides extensive customization options that allow you to personalize message content, add multiple messages in a sequence, and branch flows based on various criteria like cart value.

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There are numerous reasons why shoppers abandon their carts, ranging from not having their credit card readily available to comparison shopping or simply getting distracted. Whatever their reason for leaving mid-checkout, many of these shoppers remain interested in the product, and a well-timed abandoned cart email can effectively remind them to return. The key lies in understanding that these customers have already demonstrated purchase intent by adding items to their cart, making them highly qualified prospects for conversion.

Why Klaviyo Outperforms Default Platform Emails

Klaviyo’s abandoned cart flows offer significantly more sophistication than standard eCommerce platform notifications. The platform allows you to create multi-step sequences with precise timing controls, dynamic content that showcases exactly what customers left behind, and advanced segmentation based on customer behavior and cart value. You can also integrate both email and SMS messaging for a comprehensive multi-channel approach that reaches customers wherever they’re most responsive.

The customization capabilities extend to personalized subject lines, product recommendations, and conditional logic that adapts the flow based on customer actions. This level of personalization and automation makes Klaviyo’s abandoned cart flows substantially more effective at recovering lost sales compared to basic platform alternatives.

How to Set Up Your Klaviyo Integration Properly

Before creating your abandoned cart flow, you need to ensure proper integration between your eCommerce platform and Klaviyo. This integration is crucial because it allows Klaviyo to access real-time data about customer behavior on your site, including when someone adds products to their cart and abandons the checkout process. Start by navigating to your Klaviyo account and connecting your eCommerce platform through the integration center, which supports most major platforms including Shopify, BigCommerce, Magento, and WooCommerce.

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When setting up your integration, pay careful attention to how often data syncs from your eCommerce store to Klaviyo, as this timing affects when your abandoned cart emails will actually be sent. For example, if you set an abandoned cart email to send 30 minutes after abandonment, but your integration only syncs hourly, your customers won’t receive the email at exactly 30 minutes. Some integrations, like OpenCart, sync only once per hour, so it’s best practice to set a time delay of at least 1 hour and 15 minutes for your first email to accommodate different sync timings.

Special Considerations for Amazon Buy with Prime

If you’re using Amazon Buy with Prime for any products on your store, you’ll need to integrate it separately with Klaviyo and create two distinct abandoned cart flows. One flow should be triggered by your eCommerce platform’s checkout event, while another should be triggered by Buy with Prime’s checkout event. This separation ensures that customers receive appropriate messaging regardless of which checkout method they use and prevents confusion from receiving incorrect recovery emails.

Building Your Flow from Scratch vs Templates

Creating an abandoned cart flow in Klaviyo can be accomplished in two ways: using a pre-built template from the flows library or building your own from scratch. For most merchants, using a pre-built flow is the quickest and most effective approach. Navigate to the Flows tab in your Klaviyo account, click “Create Flow,” browse to “Prevent Lost Sales,” and select “Abandoned Cart Reminder”. This pre-built flow comes with the necessary triggers, filters, and dynamic content blocks already configured.

If you prefer to build your flow from scratch, click “Build your own” instead of selecting a template, name your flow “Abandoned Cart” or something similar, then click “Create flow”. This approach gives you complete control over every element but requires more setup time and technical knowledge. The custom approach is ideal for businesses with specific requirements or those who want to implement advanced segmentation strategies from the beginning.

Choosing the Right Trigger Event

The most common trigger for abandoned cart flows is the “Started Checkout” event, which activates when someone adds an item to their cart and proceeds to the checkout page. This event triggers once the customer has filled out their contact information and moved to the next step in the checkout process, ensuring you have the necessary contact information for creating a profile that can receive emails. Some eCommerce integrations also track the “Added to Cart” metric, which triggers when someone adds an item to their cart but doesn’t place an order.

What Triggers and Filters You Need to Configure

The trigger and filter setup is perhaps the most critical part of your abandoned cart flow, as the trigger determines when someone enters your flow while filters refine who actually receives your messages. The “Started Checkout” event is typically the most effective trigger for abandoned cart flows because it captures customers who have not only added items to their cart but have also entered their contact information at checkout, demonstrating higher purchase intent than merely adding items to a cart.

Once you’ve selected your trigger, you must add filters to ensure your messages reach the right audience. The most important filter prevents people who complete their purchase from receiving abandoned cart emails by setting up a condition that excludes anyone who has placed an order since starting the flow. Additionally, consider adding a “Hasn’t been in flow in the last X days” filter to prevent bombarding customers who recently received your abandoned cart messages if they abandon another cart soon after, which prevents email fatigue and reduces the risk of unsubscribes.

Advanced Filter Strategies

For businesses using Amazon Buy with Prime, add another filter to exclude customers who made purchases through this channel from receiving incorrect messaging. You might also want to create different branches in your flow based on cart value, customer location, or product category. These advanced segmentation options allow you to deliver more personalized messages, potentially offering different incentives based on cart value or tailoring messaging for specific product types.

Essential filters for your abandoned cart flow include:

  • Profile-based exclusions: Customers who have placed an order since starting the flow to prevent messaging completed purchasers
  • Frequency controls: Recipients who haven’t been in the flow within the last 7-14 days to avoid email fatigue
  • Platform-specific filters: Exclusions for Amazon Buy with Prime purchases when using multiple checkout options
  • Value-based segmentation: Different messaging paths for high-value versus low-value cart abandoners

The strategic use of filters ensures that your abandoned cart flow targets the right customers at the right time with relevant messaging. Consider implementing conditional splits that route high-value cart abandoners to a different message sequence than low-value abandoners, allowing for more sophisticated discount strategies and personalized approaches.

Designing Effective Email Content and Templates

The design of your abandoned cart emails plays a crucial role in their effectiveness, with dynamic content showing customers exactly what they left behind serving as the core element. Klaviyo’s pre-built abandoned cart flows include dynamic content blocks that automatically pull in the abandoned products, including images, titles, prices, and a “Return to Cart” button that links directly back to the customer’s saved cart. When designing your emails, keep the focus on the abandoned products since the primary purpose is to remind customers of items they were interested in.

Make sure the product images, details, and “Return to Cart” button are prominently displayed, with the dynamic content block serving as the central element of your email template. You can customize the look and feel of your emails, but be careful not to delete or overwrite the dynamic content functionality. If you’re using a pre-built flow, save the dynamic content blocks before making any major design changes to ensure you don’t lose this functionality.

Preserving Dynamic Functionality

If you accidentally delete the dynamic content blocks, you can restore them by adding Klaviyo’s default abandoned cart flow to your account from the flows library. For those who want to use their own email templates, save the dynamic content blocks from Klaviyo’s default template, then drag them into your custom template from the Saved Blocks library. The “Return to Cart” button uses URL variables specific to your eCommerce platform to rebuild the customer’s cart, so preserve these dynamic elements when customizing your emails.

Crafting Compelling Email Copy and Messaging

Creating compelling content for your abandoned cart emails is essential for driving conversions, with messaging that should be concise, focused, and designed to overcome the barriers that prevented the initial purchase. Start with an attention-grabbing subject line that creates urgency or curiosity, as personalizing subject lines with the customer’s name or the specific product they abandoned can significantly increase open rates. Keep your messaging simple and direct, with the primary focus on the abandoned products and supporting content that addresses common reasons for abandonment.

Include social proof such as reviews or ratings to build confidence in the purchase decision, and create a sense of urgency with phrases like “Your cart is waiting” or “Items selling fast” to encourage prompt action. Clear, compelling calls-to-action are critical—make them stand out visually and use action-oriented language like “Complete Your Purchase” or “Return to Cart”. Research from Klaviyo shows that sending 2-3 abandoned cart messages leads to optimal performance, so include only the products the customer abandoned rather than distracting them with other offerings.

Strategic Incentive Timing

Use language that encourages customers to reach out with questions and inspires urgency, but avoid offering discounts in the first email as this can train customers to abandon carts intentionally to receive discounts. If you do offer incentives, save them for the final email in your sequence or target them only to first-time buyers. This approach maintains the value perception of your products while still providing strategic incentives when appropriate.

Key messaging elements that drive conversions:

  • Urgency creators: Phrases like “Your cart is waiting” or “Items selling fast” to encourage immediate action
  • Social proof integration: Customer reviews, ratings, or testimonials to build purchase confidence
  • Personalization touches: Customer name and specific abandoned product references in subject lines
  • Clear value propositions: Highlighting product benefits and addressing common purchase objections

Optimal Timing Strategies for Maximum Impact

The timing of your abandoned cart emails is critical to their success, as sending them too soon might reach customers while they’re still shopping around, while sending them too late means customers may have already purchased elsewhere or lost interest entirely. Based on extensive testing and data analysis, Klaviyo recommends sending your first abandoned cart email 2-4 hours after cart abandonment. This timeframe gives customers enough space to complete their purchase on their own while ensuring your message arrives while their interest is still fresh.

Research from Rejoiner, based on millions of emails sent, suggests that one hour is the ideal timeframe for the first abandoned cart email, examining conversion rates at 20 minutes, 30 minutes, one hour, and one day intervals. However, Klaviyo’s pre-built flows use four hours as the first time delay, which many businesses find effective. The key is testing different timing strategies to find what works best for your specific audience and product type.

Multi-Email Sequence Timing

For a multi-email sequence, space out your messages appropriately to maximize effectiveness without becoming annoying. A typical sequence might include the first email at 2-4 hours, a second email at 24 hours, and a final email at 48-72 hours after abandonment. This cadence ensures you stay top-of-mind without overwhelming the customer’s inbox. Data from Rejoiner shows that follow-up emails can generate substantial additional revenue, with second and third emails often producing more revenue than the first email.

When setting up timing in Klaviyo, you’ll need to add time delays between each email in your flow by navigating to the Timing section in the flow builder and adding a Time Delay action before each email. Configure the delay to wait the appropriate number of hours before sending each message, and consider setting specific days of the week for message delivery if you find certain days perform better for your audience.

Adding SMS to Your Abandoned Cart Strategy

While email remains the primary channel for abandoned cart recovery, incorporating SMS can significantly boost your overall conversion rates due to exceptionally high open rates—often over 95%—and messages typically being read within minutes of receipt. This makes SMS perfect for time-sensitive abandoned cart reminders. Klaviyo allows you to easily add SMS messages to your abandoned cart flow, creating a multi-channel approach that reaches customers wherever they’re most responsive.

To add SMS to your abandoned cart flow, first ensure you’ve set up SMS in your Klaviyo account and have been collecting phone numbers with proper consent. Within your flow, simply drag the SMS action to the appropriate position in your sequence. You might consider adding an SMS message between email touchpoints or using SMS as a follow-up for customers who haven’t opened your emails. Keep your SMS messages brief and direct, focusing on the abandoned items and including a clear call to action with a link back to their cart.

SMS Compliance Requirements

For US recipients, there are specific requirements for abandoned cart SMS that must be followed: you must use double opt-in when collecting SMS consent, send only one SMS per recipient, and send the text within 48 hours of cart abandonment. A best practice is to set up an email-only abandoned cart flow first to ensure everything is working properly before adding SMS. The combination of email and SMS creates a powerful recovery strategy that can significantly increase your conversion rates when implemented correctly.

Testing and Optimization Best Practices

Once your abandoned cart flow is live, continuous testing and optimization are key to maximizing its effectiveness. Klaviyo provides robust analytics tools that allow you to track the performance of your flow, including open rates, click-through rates, and most importantly, recovery rates and revenue generated. Use these metrics to identify areas for improvement and test different approaches to see what works best for your specific audience.

A/B testing is particularly valuable for abandoned cart flows, allowing you to test different subject lines, email content, timing, and incentives to find the optimal combination. Klaviyo makes it easy to create split tests within your flows by simply adding a split test action and specifying the percentage of traffic that should receive each variation. After running tests for a statistically significant period, analyze the results and implement the winning variations.

Key Elements to Test

Common elements to test include the timing of your first email (1 hour vs. 4 hours after abandonment), subject line approaches (question vs. statement, with product name vs. without), email design (minimal vs. detailed), and incentive strategies (discount vs. free shipping). Monitor your unsubscribe rates closely, as this can indicate whether your abandoned cart emails are being perceived as helpful reminders or annoying spam. If unsubscribe rates start to climb, you may need to adjust your messaging tone or reduce the frequency of your emails.

Optimization is an ongoing process since customer preferences and market conditions change over time, so continue testing and refining your flows to maintain peak performance. Through strategic testing and data-driven optimization, you can significantly improve the effectiveness of your abandoned cart recovery efforts and achieve recovery rates of 20% or higher with proper implementation.

Measuring Success and Troubleshooting Issues

To truly understand the impact of your abandoned cart flow, you need to measure its success using key performance indicators including recovery rate (the percentage of abandoned carts that convert to purchases), revenue generated from the flow, email open rates, click-through rates, and unsubscribe rates. Klaviyo’s analytics dashboard makes it easy to monitor these metrics and compare them to industry benchmarks. A successful abandoned cart flow typically recovers 10-15% of abandoned carts, but with optimization, some merchants achieve recovery rates of 20% or higher.

If your abandoned cart flow isn’t performing as expected, there are several common issues to check. First, verify that your eCommerce integration is working correctly by confirming that abandonment events are being properly tracked in Klaviyo. Check your flow triggers and filters to ensure they’re set up correctly, as improper filters might be excluding potential customers or including those who’ve already purchased. Review your email deliverability metrics, and if emails aren’t reaching inboxes, check for spam triggers in your content or authentication issues with your sending domain.

Systematic Performance Analysis

For more targeted troubleshooting, examine each stage of your flow separately. If open rates are low, test different subject lines. If click-through rates are poor, improve your email design or CTAs. If customers click through but don’t purchase, the issue might be with your website’s checkout process rather than your emails. If you’re not seeing anyone enter your flow, this is actually a good sign—it means people are completing their purchases without abandoning.

Common troubleshooting areas to investigate:

  • Integration verification: Confirm abandonment events are properly tracked and syncing correctly with Klaviyo
  • Filter accuracy: Ensure triggers and filters aren’t excluding legitimate prospects or including completed purchasers
  • Deliverability issues: Check spam triggers, authentication settings, and inbox placement rates
  • Content optimization: Test subject lines, email design, and call-to-action effectiveness based on performance metrics

By systematically analyzing performance and addressing issues, you can optimize your abandoned cart flow to become one of your most profitable marketing channels. Regular monitoring and adjustment ensure that your flow continues to perform effectively as your business grows and customer behavior evolves.

Maximize Your Revenue Recovery Today

Implementing a well-designed abandoned cart flow in Klaviyo represents one of the highest-impact strategies for recovering lost eCommerce revenue. The combination of strategic timing, personalized messaging, and multi-channel communication creates a powerful system that transforms cart abandonment from a loss into an opportunity. Your abandoned cart flow should evolve continuously through testing and optimization, ensuring that it remains effective as your business grows and customer preferences change.

Start by implementing the fundamental elements covered in this guide: proper integration setup, strategic trigger and filter configuration, compelling email design with dynamic content, and optimal timing strategies. Once your basic flow is performing well, enhance it with SMS messaging, advanced segmentation, and sophisticated testing protocols. The investment in creating a comprehensive abandoned cart strategy will pay dividends through increased conversion rates, higher customer lifetime value, and substantial revenue recovery that directly impacts your bottom line.

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