Stop marketing to the wrong customers.
Identify and model buyers that are really driving revenue – then find and convert more like them.

Uncover your highest-value buyers hidden in Klaviyo.
Then ask yourself: How would that affect CAC? CLV? ROAS? AOV? retention? loyalty? profit?
Most DTC brands waste time and ad spend on customers who will never buy — or never buy again.
Without clear insight into who your best customers are, it’s nearly impossible to reduce CAC, improve retention and CLV, or scale profitably.
Many brands waste time and money on the wrong customers. Every dollar spent chasing them is a dollar lost forever.
Klaviyo segmentation out-of-the-box is excellent. But there’s more you can be doing.
Traditional Approach:
Running campaigns on guesswork, assumptions, or incomplete customer data puts growth at risk and wastes resources.
Segment Ninja identifies your most valuable customers — and helps you find more like them.
We enrich Klaviyo profiles with Claritas PRIZM® insights, build data-backed personas, and apply the 80/20 rule to focus your marketing on the segments that drive the most revenue.
The result? Lower CAC, higher CLV, better ROAS, and smarter campaigns that convert.
Retention and acquisition only matter if you’re focused on the right customers.
Smart Approach:
AI-enabled segmentation using proven Fortune 500-grade predictive and segmentation models. Higher succes rates.
Here’s how we do it.
Your 3-Step Playbook
1. Find Your High CLV Buyers
We identify your disproportionately most profitable buyer segments with the highest Customer Lifetime Value and profit. Otherwise, you're wasting time and money trying to convert and find more underperforming customers.
2. Build Data-rich Personas
Next, we generate rich personas of your best buyer segments so you can create superior communications and offers that convert better. Personas help designers, copywriters, media planners and strategiest do their jobs better.
3. Acquire More of Your Best
Then we show you how to acquire more of these superstars so you can optimize ROAS, scale faster and more profitably. Any efforts otherwise are reckeless and irresponsible. Fortune 500 have been using the same methods for decades.
The profit multiplier used by top DTC brands
No code. 30 second activation. No credit card required.
How to find your disproportionately most profitable customers.
The Power of the Pareto Principle
20% of things cause 80% of results (roughly). The principle highlights big impact when you focus on few areas. In this case your best customers.


Get instant clarity with data-backed personas
in just one click.
Discover who your best buyers are, how to speak their language, and drive more conversions.
Segment Ninja automatically builds and pushes your high-value segments directly to your Klaviyo account — ready for activation.
Could Jarrod, the Smiths and Maci be among your best customers?
Download sample personas*
*Sample segments.
Top DTC and Fortune 500 brands don’t guess. Neither should you.
Stop wasting time, money, and brain-melting effort.
No more second-guessing your copy or offer.
No more pouring over confusing data to find the “right” answer.
No more wondering if you’re nurturing or annoying your audience.
No more missed opportunities at the top of funnel.
No more wasted ad spend on the wrong segments.
You're in good company

Segment Ninja uses the same data science, predictive and segmentation models as the Fortune 500 to identify, understand, target and sell to their best customers more profitably.
Equip your team with the tools to succeed.
Do better, faster and easier. Our early adopters did. So can you.
5.2x ROI
Cold email campaigns convert better when your top segments are known and targeted
17x ROI
Tracked with our matchback report at the household level using our identity graph
Smarter Copywriting
Personas for your top segments inspire more persuasive messages
High-Performing Visuals
Creative that resonates starts with audience insight
Underserved = Untapped
Discover hidden segments your competitors overlook
Validation Pixel
Know if your ads attract your best customers - before it’s too late
Creative Clarity
Better briefs start with clear, data-backed personas
Better Audits
Clients love insights they didn’t know they needed
Testimonials
You don’t have to spend more, just optimize what you’re already doing.
Agencies and merchants in our year-long private beta last year saw value immediately. And their feedback has helped shape how Segment Ninja will help you scale growth too.
I'm working with a client on a more refined segmentation strategy for 2024, and the data we're getting from Segment Ninja is a BIG factor in how we're looking at our customers, so we're excited to keep using the platform!
Erik Tharp, Email Specialist
Flowium, Klaviyo Master Elite agency
We've just started using Segment Ninja and are gleaning incredible insights about our customers. We're also confirming or refuting what we thought we knew. No more guessing. Let’s see what we can do with this hot rod!
Sam Waters
Head of Retention, Alen
A major win for us is the ability to know our best customers better and focus marketing dollars on those most likely to convert. One click saved me brain-melting guesswork. We're going to reduce ad waste dramatically, improve ROAS and lower CAC.
Luke Maclauren
Nootka marine adventures
The easy way to decrease CAC. increase CLV. increase ROAS. increase AOV. increase retention. increase loyalty. increase profitability.
Segment Ninja identifies your most profitable buyers so you can engage and convert them more effectively and more often.
Then we model and help find more like them so you can grow faster and more profitably.
One click. No code. 30 second activation.
Drive more profits using Fortune 500 Segmentation
No credit card required. Test your highest CLV, AOR, VIP, or any other list.