The WhatsApp Marketing Agency for DTC Brands Selling Where WhatsApp Wins
In the UK, EU, and Latin America, WhatsApp is the channel customers actually answer - and it now runs natively inside Klaviyo, next to your email and SMS. We already run it at scale: Klaviyo wrote the case study on our work for Jimmy Joy.



Don’t Take Our Word for It. Klaviyo Wrote the Case Study.
Jimmy Joy - plant-based nutrition, 250,000+ customers in 88 countries - runs WhatsApp inside Klaviyo with YOCTO. In the early-access BFCM campaign, a WhatsApp list under 5% of the file drove nearly 30% of Klaviyo-attributed revenue. Klaviyo published the numbers under its own name.
“When used correctly, WhatsApp amplifies exclusivity better than any other channel.”Bobi Jonceski · Senior Lifecycle Strategy Consultant, YOCTO · in Klaviyo’s case studyRead the case study on klaviyo.com →
Your Customers Live on WhatsApp. Your Brand Doesn’t.
WhatsApp marketing is effectively an ex-US channel: Meta has paused all marketing messages to US phone numbers since April 2025. That splits the market - US-facing agencies are structurally locked out, and the brands winning on WhatsApp are the ones selling where it actually works. If that’s you and the channel still isn’t earning, it’s usually one of these.
Your UK and EU customers live on WhatsApp. You send them nothing.
The app your European customers open twenty times a day has no message from your brand in it. Email fights a crowded inbox, texting barely registers there - and the one channel they actually answer is silent.
You bolted on a WhatsApp tool that can’t see your Klaviyo data.
A separate SaaS means segments rebuilt by hand, suppressions that don’t sync, and two attribution models claiming the same order. A channel that can’t see your customer data can’t do retention.
You tried broadcasts, got throttled, and concluded WhatsApp doesn’t work.
Meta scores every template and squeezes senders whose messages get ignored or reported. Blast the way you blast email and the channel shuts itself off. That isn’t WhatsApp failing - it’s WhatsApp working as designed.
Nobody can tell you what a message actually costs.
Since Meta’s July 2025 pricing change, you pay per delivered template - by category, by country. Marketing to Germany, utility to Spain, a service reply in the free 24-hour window: three different invoices. If your team can’t map that, they can’t plan the channel.
Your SMS playbook flopped in Europe - because Europe doesn’t text.
North America runs on text messages. The UK, EU, and Latin America run on WhatsApp. Porting a US text calendar onto a European list isn’t a strategy; it’s a geography mistake.
Your subscription has churn-save and dunning problems WhatsApp could fix.
Upcoming-charge reminders, skip-a-month saves, failed-payment recovery - the conversations subscribers will actually have on WhatsApp. Almost no one has built these flows. That includes your current agency.
WhatsApp Marketing, Run Where Your Revenue Lives: Inside Klaviyo.
Every WhatsApp vendor wants to be your second platform. We don’t install one. WhatsApp has been native in Klaviyo since September 2025 - campaigns and flows on the same canvas as the rest of your retention program - so channels take turns instead of piling on. One customer profile, one flow canvas, one attribution model, and one revenue system to hold it all.
WhatsApp Flows in Klaviyo
Welcome, abandoned cart, post-purchase, winback - built as WhatsApp steps inside your existing Klaviyo flows and orchestrated against email and SMS, so every customer gets the channel they answer instead of all three at once.
Subscription Retention Flows
The category nobody else has built: churn-save intercepts, upcoming-charge reminders, skip-a-month and swap flows, failed-payment recovery on utility templates, replenishment nudges. Two-way conversations at the exact moments subscribers decide to stay - the discipline behind Frøya’s 33% churn reduction, now on a channel customers reply to.
Compliance, Opt-in & Cost Control
GDPR-clean consent mechanics and instant opt-out, template-category strategy - marketing vs utility vs service, with the free 24-hour service window doing the heavy lifting - and per-country cost planning, so you know what a message earns before it sends.
Your Free Audit Is a Complete Gameplan, Not a Sales Call.
Most agencies sign you, then disappear for eight weeks to “audit” before they tell you anything. We do the opposite. Before you pay a cent - before you even decide - you get a full teardown of your account and the exact plan to fix it, built from your real numbers. Here’s what lands in your inbox.
A Full Unit Economics Analysis
We pull your real numbers from Shopify and Klaviyo - margins, breakeven, retention order by order, and the most you can spend to acquire a customer without losing money. You see exactly where the business makes money and where it leaks.
Every Growth Lever, Mapped
The full set of levers that move LTV - converting one-time buyers to subscription, cutting voluntary and failed-payment churn, reactivating cancellers, lifting subscription AOV. You see which ones actually move the needle.
A Prioritized Lifecycle Scorecard
A flow-by-flow benchmark of your current program - what’s working, what’s broken, what’s missing - scored against brands like yours and ranked by revenue impact. A number, and a reason.
The Complete Gameplan
One prioritized roadmap - which flows to fix, kill, or build, which subscriber segments to split out, and which subscription levers to pull, in order, with targets and trajectory. Not a 40-page deck. A plan you can start tomorrow.
All built from your live Klaviyo, Shopify, and subscription data - never a template.
Subject to availabilityNamed Clients. Real Numbers.
Proof We Didn’t Write Ourselves
Anyone can publish their own wins. These weren’t published by us. Klaviyo, Skio, Loop and others wrote up our clients’ results as their own customer success stories. Read them at the source.
The Founder Does the Diagnosis
George Kapernaros founded YOCTO to do one thing better than anyone else: turn DTC retention into a measurable system. He sits on the Klaviyo Partner Advisory Council, the Forbes Business Council, and the Fast Company Executive Board - and he personally runs the audit on every account before a single deliverable is complete.
The Videos Other Agencies Use to Train Their Staff



WhatsApp Marketing Questions, Answered.
Bring Us Your Hardest Retention Problem.
We take on a fraction of the brands that apply - the ones we know we can move the needle for.






























