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10 Must-have Integrations With Klaviyo for Customer Engagement and Retention

Looking for ways to improve your customer engagement and retention? Here are the must-have Klaviyo integrations we recommend to boost campaign performance.

In the fast-paced world of marketing automation, Klaviyo has emerged as a trusted name across industries. Its ability to streamline campaigns and enhance customer relationships has made it an essential tool for businesses striving to stay ahead in the competitive market. 

What sets Klaviyo apart is its seamless integration with various other solutions. These integrations act as a bridge, allowing businesses to harness the power of data flow and maximize the impact of their marketing efforts. But with a multitude of options available, which Klaviyo integrations should you prioritize? We've got you covered. 

Here are the top 10 Klaviyo integrations that are a must-have for boosting customer engagement and retention.

Best Klaviyo integrations for boosting customer engagement and retention 

While the integrations you set up must entirely be based on what your business does, who your audience is and your objective, here are some that we recommend: 

1. IgnitePOST 

In an era dominated by digital noise, IgnitePOST emerges as a game-changer. Merging advanced technology with the timeless appeal of pen and ink, it delivers messages that not only reach but resonate with your audience in the form of handwritten notes. 

Why do we recommend this integration?

  • Robust Software: Seamlessly integrates with existing systems, ensuring easy deployment.
  • Precision Robotics: Using real ballpoint pens, it produces notes with a human touch, making each message stand out.
  • Impressive Performance: Outdoing digital channels, IgnitePOST boasts conversion rates 30X higher than emails and 10X higher than Direct Mail.

With its integration into Klaviyo, brands gain access to:

  • Smart Segmentation: Send handwritten notes based on specific Klaviyo segments, from purchase behaviors to customer milestones.
  • Strategic Timing: Control when your cards get dispatched and supplement them with well-timed emails via IgnitePOST webhooks.
  • Diverse Use Cases: From soliciting reviews to targeting potential churn points in a subscription cycle, the integration ensures brands connect meaningfully and timely.

In essence, IgnitePOST offers brands a chance to be heard above the digital clamor. It’s not just about reaching customers but engaging them, ensuring every interaction leaves a lasting imprint. If you're looking to refine your engagement approach, IgnitePOST is the integration to consider.

Recommended read: 10 must-have automations to set up in Klaviyo for sending handwritten cards


In today's dynamic market, customer loyalty can't be left to chance. emerges as a formidable tool, ensuring brands cultivate and sustain meaningful relationships with their customers.

Why do we recommend this integration?

  • Comprehensive Loyalty Solutions: From points to referrals, offers a multi-faceted approach to foster brand loyalty.
  • Seamless Integration: Plug into your existing systems effortlessly, enabling a fluid customer loyalty experience.
  • Actionable Insights: Dive deep into customer behaviors, aligning your strategies with what truly matters to them.

Harnessing its power with Klaviyo, businesses can:

  • Engage Strategically: Use Klaviyo's data-driven segments to tailor's loyalty initiatives, ensuring maximum impact.
  • Enhance Communication: Integrate loyalty updates within your email campaigns, keeping customers informed and engaged.
  • Diverse Deployment: Whether it's rewarding consistent purchasing behavior, rolling out special promotions, or recognizing customer milestones,, coupled with Klaviyo, makes it happen seamlessly.

3. Trustpilot

For any brand, consumer opinions wield unprecedented power. Trustpilot, a leading platform for consumer reviews, steps up as an essential tool for businesses aiming to build trust and showcase authenticity. When integrated with a robust system like Klaviyo, Trustpilot's potential is magnified.

Why do we recommend this integration?

  • Credible Feedback: Trustpilot aggregates real user reviews, ensuring that potential consumers receive genuine feedback about your brand.
  • Enhanced Visibility: Prominent display of positive reviews and testimonials can significantly boost brand perception and drive conversions.
  • Actionable Analytics: Beyond showcasing reviews, Trustpilot provides insights into customer sentiments, helping businesses iterate and improve.

Integrating with Klaviyo, Trustpilot offers brands:

  • Dynamic Display: Integrate your Trustpilot stars, reviews, and ratings effortlessly in your Klaviyo newsletters using a real-time widget.
  • Customizable Review Filters: Tailor your email content by showcasing reviews based on specific criteria – from star ratings to content type (service or product reviews).
  • Fresh Testimonials: With an automated system that prioritizes the most recent feedback, recipients always see the latest and most relevant scores and reviews, keeping your brand's image fresh and updated.

4. Re:amaze

In today's digitally interconnected landscape, customers expect prompt and tailored responses. Enter Re:amaze, a sophisticated web-based helpdesk platform designed for businesses to efficiently manage and interact with customers across various channels – chat, email, social media, VoIP, and even mobile.

Why do we recommend this integration?

  • Multi-Channel Support: Seamlessly handle conversations, whether they emerge from your website, social media platforms, or mobile applications.
  • Advanced Automation: Empower your support teams with Machine Intelligence to automate routine tasks, swiftly address queries using natural language macros, and optimize workflows.
  • Team Collaboration: Enhance intra-team communication with tools like notes, assignments, and shared views, ensuring that every customer query receives a holistic response.

Pairing Klaviyo with Re:amaze brings forth additional advantages:

  • Intuitive Workflow Integration: Visually craft and modify workflows without delving into code, saving both time and resources.
  • Tailored Customer Journeys: Harness the power of custom workflows by defining specific triggers, actions, and searches that best resonate with your audience.
  • Efficient List Management: Gain insights into your customer's subscription status, seamlessly manage lists, transfer contacts, and keep your database agile and up-to-date.

5. Facebook ads

While acquiring new customers is essential, re-engaging with those already in your fold often proves more profitable. Through the strategic integration of Facebook Ads with Klaviyo, brands can truly make every ad count, fostering loyalty and driving repeat business.

Why do we recommend this integration?

  • Familiarity Breeds Engagement: An existing customer recognizes your brand. By retargeting them, you're tapping into an established relationship, often leading to better engagement and conversion rates.
  • Optimized Spending: Targeting an audience that's already shown interest ensures that your advertising budget is spent more judiciously, yielding higher returns on investment.
  • Tailored Content: Armed with data on past interactions, purchases, and preferences, you can curate ads that resonate more deeply with existing customers, ensuring relevance.

With the Klaviyo integration, brands can perform:

  • Data-Driven Decisions: Seamlessly draw insights from Klaviyo's comprehensive customer database, allowing you to create hyper-targeted Facebook ad campaigns.
  • Automated Campaigns: Set triggers based on specific customer actions or milestones, automating the retargeting process and ensuring timely ad displays.
  • Performance Analysis: Measure the effectiveness of your retargeting campaigns by analyzing engagement metrics and refining strategies accordingly.

6. Zendesk

In an era where customer loyalty hangs by a thread, the importance of efficient and personalized customer service cannot be emphasized enough. A single negative experience can deter 59% of customers from returning. 

The solution? A streamlined approach to customer interactions, enabled by the synergy between Klaviyo and Zendesk.

Why do we recommend this integration?

  • Unified Dashboard: The integration amalgamates the plethora of customer interactions, ensuring that whether you're managing marketing campaigns or handling support tickets, everything converges into a single, manageable dashboard.
  • Intelligent Targeting: Klaviyo's integration enables businesses to segment and target their audience based on real-time customer support interactions. It paves the way for tailor-made communication, differentiating between a customer with an open ticket and one who left satisfied.
  • Seamless Connectivity: Ever thought a marketing text could lead to instant support? With Klaviyo and Zendesk’s intertwined functionalities, a response to a marketing text on Klaviyo can instantly generate a ticket on Zendesk. This seamless transition ensures that every customer touchpoint is captured and addressed promptly.

In a nutshell, the Klaviyo-Zendesk integration bridges the gap between marketing and support to help brands offer a cohesive and enriched customer journey. 

7. Aftership

In the eCommerce realm, the customer journey doesn’t end at the checkout. Instead, it extends to the anticipation and excitement of receiving an order. This phase is crucial, and with 

Aftership integrated with Klaviyo, businesses have a robust tool to keep their customers in the loop, bolstering trust and ensuring retention.

Why do we recommend this integration?

  • Real-time Updates: Customers are kept informed with timely delivery updates, be it through email or SMS, based on the real-time shipping status provided by Aftership. This transparency alleviates concerns and fosters a sense of security.
  • Automated Notification Flows: Customize and automate delivery update flows, incorporating order details, tracking numbers, and IDs. This ensures that customers are always aware of their order's journey.
  • Mitigating Delivery Anxieties: In case of delays or in-transit issues, the integration ensures that customers are instantly informed, significantly reducing shipment-related stress. Tailored communications can address specific incidents, ensuring clarity.
  • Engaging VIP Customers: It's always detrimental when a loyal customer faces delays. With this integration, brands can personally engage with VIP customers, addressing delays with custom, conversion-focused messages, and turning potential dissatisfaction into reinforced loyalty.
  • Post-Delivery Engagement: Once Aftership marks a shipment as delivered, businesses can trigger product review flows, nudging customers to share their feedback, and furthering engagement.

8. Friendbuy

In the eCommerce landscape, word-of-mouth remains one of the most authentic and impactful marketing tools. When customers love your products, they naturally want to share their experiences. 

Friendbuy capitalizes on this inherent human behavior, fueling powerful referral engines for some of the most distinguished brands globally, from innovative disruptors like Casper and AWAY to industry titans like Walmart and Disney.

Why do we recommend this integration?

  • Unified Profiles: As participants join your referral program, Friendbuy seamlessly channels their email and phone details, establishing new subscriber profiles in Klaviyo. This streamlined process ensures that your referral database is always updated, ready for targeted communication.
  • Elevating Referral Awareness: By integrating Friendbuy referral links within Klaviyo's emails and texts, businesses can consistently remind and encourage their customer base to share and benefit. This persistent visibility boosts referral participation rates.
  • Reward Redemption Nudges: It's one thing to offer rewards and another to ensure they're redeemed. With Klaviyo's communication capabilities, customers are routinely prompted to enjoy their referral benefits, enhancing engagement and cementing their bond with the brand.

9. Appstle 

In an era where consistent consumer engagement is paramount, businesses are fast realizing the potential of subscription models. Appstle Subscriptions brings a modern twist to standard subscription services, offering both regular and 'Build-A-Box' options. With its top-rated performance, it's a go-to for businesses wanting steady, recurring customer engagement.

Why do we recommend this integration?

  • Timely Email Alerts: Appstle ensures customers stay informed. From order updates to payment reminders, timely emails keep your brand top of mind and pave the way for additional sales opportunities.
  • Boosted Engagement with Klaviyo: Integrating with Klaviyo ensures your emails hit the mark, leading to better customer interaction and results.
  • Drive Repeat Sales: The subscription model inherently encourages repeat business. Customers enjoy the convenience of automatic renewals, leading to consistent revenue streams for your brand.

In essence, Appstle  Subscriptions, paired with Klaviyo, offers businesses a streamlined approach to keep customers engaged and revenues consistent.

10. Donately

Donately isn't just another donation platform; it’s a commitment to revamp the donor experience. With its modern, embeddable donation forms and aesthetically-pleasing landing pages, it ensures that donors are treated to a streamlined process from start to finish. Couple this with a user-friendly dashboard, innovative text messaging capabilities, and empowering peer-to-peer fundraising pages, and you get a comprehensive solution that doesn't break the bank.

Why do we recommend this integration?

A robust fundraising tool deserves an equally dynamic marketing companion. By integrating Donately with Klaviyo, non-profits, and socially active enterprises can nurture their donor relationships like never before. Key Benefits include:

  • Enhanced Donor Relations: Directly sync your Donately donor information into Klaviyo’s database, ensuring no supporter goes unnoticed.
  • Engaging Communication: Utilize Klaviyo's state-of-the-art email marketing to keep donors updated, appreciated, and engaged.
  • Targeted Outreach: Tailor your messages based on donation history, ensuring relevant content for each donor segment.

Harness the Power of Klaviyo Integrations for Your Online Business

In today's dynamic realm of customer engagement and retention, Klaviyo's integrations serve as game-changers. Harnessing these tools isn't merely about automation; it's about crafting authentic relationships with your audience. 

By weaving these integrations into your marketing strategy, you pave the way for enhanced loyalty, sustained repeat business, and long-term success.

Frequently asked questions 

1. What can you integrate Klaviyo with? 

Klaviyo offers integrations with various solutions, including CRM, e-commerce platforms, support systems, and more.

2. How do you find integrations in Klaviyo? 

Discover integrations within Klaviyo's app settings or explore Klaviyo's official integration partners' list.

3. How many integrations does Klaviyo have? 

Klaviyo offers an extensive range of integrations with over a hundred partner solutions to enhance your marketing capabilities. 

Verified writer

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