Klaviyo can handle product recommendations for many ecommerce brands–but it isn’t the only option. If you need more control over product ranking, want to personalize the storefront as well as emails, or need recommendations to work across complex catalogs, a dedicated recommendation platform may be worth evaluating.
The goal usually isn’t to replace Klaviyo. It’s to decide whether another tool can improve product selection and personalization while Klaviyo continues to manage email and customer messaging.
What Klaviyo can do on its own
Klaviyo product feeds use catalog information and customer behavior–such as products viewed or purchased–to populate recommendations in messages. You can configure feeds for use cases like bestsellers, recently viewed products, and browse-abandonment emails, and apply filters such as price or stock level.
That can be enough for straightforward campaigns and flows. A third-party tool may be worth considering when you need more specialized recommendation logic, broader onsite personalization, or a closer connection between recommendations and merchandising goals.
At a glance
| Platform | A good fit when you need… | Klaviyo connection to investigate |
|---|---|---|
| Clerk.io | Ecommerce recommendations across email and storefront | Email recommendation embeds can be added to Klaviyo templates. |
| Nosto | Personalization and customer data shared between email and onsite experiences | Nosto and Klaviyo support two-way segment syncing; Nosto can also send website search events to Klaviyo. |
| Dynamic Yield | A broader personalization and experimentation platform | Its Klaviyo connector supports reusable content blocks for Klaviyo campaigns. |
| Bloomreach | Product discovery that brings search, merchandising, and recommendations together | Bloomreach documents a Klaviyo integration for customer data and segment synchronization; confirm the precise recommendation-to-email workflow for your setup. |
| Quarticon | Product recommendations across a web store, email, app and push notifications | Quarticon describes sending recommendations to Klaviyo and offering personalized onsite recommendations; validate integration details and scope with the vendor. |
The platforms in more detail
Clerk.io: Recommendations for email and storefront
Clerk.io is a practical option for merchants who want a dedicated recommendation engine while keeping Klaviyo as their email platform. Its documented Klaviyo workflow uses email recommendation embeds: configure the recommendation logic and design in Clerk.io, then add the embed code to a Klaviyo template.
This approach may suit a brand that wants to use recommendation logic in more than one place, rather than managing email product blocks separately from storefront recommendations. Before choosing it, check how the integration handles your catalog structure, product variants, stock status, and any margin-based ranking rules you depend on.
Nosto: Connect customer segments and onsite experiences
Nosto is a personalization platform with a documented Klaviyo integration. The integration can sync segments in both directions, so Klaviyo audiences can inform Nosto-powered onsite experiences and Nosto segments can be used in Klaviyo campaigns. Nosto can also send website search activity to Klaviyo, which may support search-abandonment messaging.
Nosto is worth exploring if your goal goes beyond inserting recommended products into an email. Ask how its recommendation features, segment synchronization, and onsite personalization map to your specific customer journey–and what data updates when.
Dynamic Yield: Broader experience personalization
Dynamic Yield is a wider personalization and optimization platform, rather than just an email recommendation add-on. Its capabilities include recommendations, targeting, and experimentation across digital experiences. Its Klaviyo Universal Block connector lets teams reuse content blocks created through Dynamic Yield’s email experience tools in Klaviyo campaigns.
That breadth can be useful for organizations that want to test different experiences and coordinate personalization across multiple touchpoints. It can also mean more setup and ongoing operational work. Confirm exactly which features are included in the proposed implementation and who will manage them.
Bloomreach: Search, merchandising, and recommendations
Bloomreach is a candidate when product discovery is central to the project–particularly if you want search and merchandising capabilities alongside recommendations. Its documentation describes a Klaviyo integration for syncing customer data, segments, and marketing events between the platforms.
That data connection is not the same as confirming a specific recommendation block or feed for Klaviyo emails. If email recommendations are a requirement, ask Bloomreach to demonstrate the end-to-end workflow with your ecommerce platform, catalog, and Klaviyo templates before committing.
Quarticon: A dedicated recommendation layer
Quarticon’s recommendation engine for ecommerce can personalize product suggestions on a website and in emails, including through Klaviyo. It is a practical option for merchants who want a dedicated recommendation engine while keeping Klaviyo as their email platform.
Quarticon recommendations may suit a brand that wants to use recommendation logic in more than one place, rather than managing email product blocks separately from storefront recommendations.
How to choose
Start with the problem you want to solve, not the longest feature list.
- You mainly want better product blocks in Klaviyo emails: Compare Clerk.io and Quarticon, then test the setup with a real email template and product feed.
- You want customer segments and website experiences connected to Klaviyo: Look closely at Nosto’s bidirectional segment sync and the onsite use cases you plan to run.
- You need experimentation across several digital touchpoints: Evaluate Dynamic Yield, including the implementation and team capacity required.
- Search and product discovery are as important as email: Consider Bloomreach or Quarticon. Verify how they support the recommendation workflow in Klaviyo you need.
Plan for implementation and measurement
Before launching a new engine, make sure the underlying data is dependable. Product identifiers, variant information, prices, inventory, and customer events need to be accurate and consistent across systems. Otherwise, the recommendation engine may display unsuitable products or produce results that are difficult to interpret.
Run a focused test rather than changing every recommendation placement at once. Choose one use case, such as browse abandonment or post-purchase cross-sell, and compare it with your existing approach. Track metrics such as recommendation clicks, conversion rate, revenue per recipient, average order value, and the margin impact of the products shown. Use a holdout group where practical, and ensure reporting does not count the same revenue twice across platforms.
Finally, ask each vendor for a demo using your catalog and real use case. Confirm integration requirements, data refresh behavior, template compatibility, implementation responsibilities, support, and total pricing. Pricing and packaging can depend on your usage and configuration, so vendor quotes are more useful than broad published estimates.
The bottom line
Klaviyo’s built-in product feeds are a sensible starting point for common email recommendation needs. A third-party engine becomes more compelling when you have a clearly defined gap – such as wanting the same recommendation logic across email and storefront, connecting onsite behavior with campaign segments, or unifying search and product discovery with personalization.
Choose the platform that addresses that gap with the least unnecessary complexity, then prove its value with a controlled test.
Clerk.io and Quarticon seem like the strongest default fit for a mid-size ecommerce brand that wants more capable product recommendations in Klaviyo emails and on its storefront, without moving straight to an enterprise-scale platform.
