Email Marketing Just Got Smarter: Segment Ninja and Claritas Deliver Real Intelligence to Klaviyo

Email marketers using Klaviyo just got a major upgrade. Segment Ninja, a SaaS segmentation platform built specifically for Klaviyo users, has teamed up with Claritas to roll out a first-of-its-kind integration that brings powerful demographic, psychographic, and lifestyle insights directly into the platform. The goal? Help marketers instantly identify their highest-value customers—and acquire more just like them.

Early adopter Alen, a leading air purification brand, is already proving the results. Using the combined power of Segment Ninja and Claritas’ PRIZM® Premier data, the company saw a 5.2x ROI on segmented acquisition campaigns and up to 60% open rates when targeting high-value audience clusters.

From CRM to ROI: Turning First-Party Data into First-Class Strategy

Marketers have long struggled to bridge the gap between the first-party data they own and the deep segmentation needed to turn that data into meaningful action. Segment Ninja solves this with a simple, one-click interface that pipes in Claritas’ PRIZM Premier, one of the industry’s most robust segmentation datasets.

Here’s what that means for Klaviyo users:

• Instant list enrichment with household-level demographic and lifestyle data

• Dynamic persona generation to tailor content and creative

• Geospatial mapping to find and focus on profitable customer clusters

• Cross-platform reach across 150+ partner channels, including Meta and Google

• One-click integration for pushing segments directly into Klaviyo

It’s a data marketer’s dream—without the data science nightmare.

Proven Results: Alen’s Segmentation Success

The platform isn’t just about flashy features—it delivers performance. During a year-long beta with Klaviyo Elite Master agency Flowium and D2C brands, Segment Ninja demonstrated:

• 17x ROI through address-level matchback attribution

• Precision targeting that extended well beyond Klaviyo’s CRM boundaries

• Seamless activation across Welcome Series, Abandoned Cart, Post-Purchase, and Win-Back flows

For brands like Alen, the secret to growth is clear: find the top 20% of customers driving 80% of revenue, and scale from there. Segment Ninja helps them do just that.

Smarter Campaigns—No PhD Required

One of Segment Ninja’s biggest advantages is its accessibility. Whether you're a Klaviyo novice or a seasoned CRM strategist, the platform’s UI is built for speed and simplicity.

Features like tree map visualizations, downloadable data-rich personas, and the new NinjaGPT—which lets brands simulate conversations with target personas—make it easier to craft resonant messaging without guesswork.

And for teams using Klaviyo with Meta or Google Ads? You can directly retarget or acquire lookalike high-value buyers with unmatched accuracy.

Claritas’ Identity Graph Brings It All Together

At the core of this integration is the Claritas Identity Graph, which enables robust matchbacks, address-level targeting, and multi-channel campaign optimization. With PRIZM Premier’s 68 segment categories and Claritas’ vast reach, Segment Ninja is turning Klaviyo into a segmentation powerhouse.

“Our mission is to help brands turn first-party data into scalable, precision-targeted campaigns,” said Jim Kalogerakos, founder and CEO of Segment Ninja. “With Claritas, we’re giving marketers a direct path to action—and to results.”

Jeff Stevens, SVP of Strategic Partners at Claritas, added, “By integrating PRIZM Premier into tools marketers already use, we’re making precision marketing easier than ever.”

A Smarter Way to Segment Has Arrived

In the increasingly noisy landscape of D2C and email marketing, precision matters. Segment Ninja and Claritas have brought together ease of use, advanced segmentation, and automation into a single, marketer-friendly package inside Klaviyo.

For brands looking to increase ROI without increasing complexity, this integration might be the smartest move you’ll make all year.

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