✦ Klaviyo-certified email agency

Email that
actually sells.

We build and manage email & SMS systems for DTC brands that want more revenue, better retention, and flows that run while you sleep.

Book a free call → See results ↓

Trusted by 50+ DTC brands across Europe & the US

Brands we've grown

PROOF

Numbers don't lie.

Here's what happens when email becomes a growth channel, not an afterthought.

+$1.4M
Additional email revenue, 6 months
Beauty brand
Learn more →
+43%
Increase in email-attributed revenue
Health & Wellness
Learn more →
2.5×
List revenue multiplier within 90 days of onboarding
Fashion brand
Learn more →
Beauty & Skincare
From €8K to €32K/mo email revenue in 4 months
Read case →
Health & Wellness
3× Black Friday email revenue YoY with full-channel strategy
Read case →
WHAT WE DO

Full-stack email & SMS, handled.

From strategy to design to deployment — we run the whole channel so you can focus on your product.

Klaviyo Setup & Strategy

Full account audits, list architecture, tagging strategy, and revenue attribution setup — built to scale.

Flow Automation

Welcome, abandon cart, post-purchase, winback, sunset — every flow built, A/B tested, and optimised.

Campaign Management

Weekly sends planned, designed, written, and deployed. Never miss a send date again.

Segmentation & Deliverability

Surgical list segmentation that drives inbox rates up and unsubscribes down.

SMS Marketing

Klaviyo SMS flows and campaigns that complement email and drive urgency without annoying subscribers.

A/B Testing & Reporting

Monthly performance reports, ongoing tests, and strategy reviews so you always know what's working.

Not sure which services you need? → Book a free audit call
THE PROCESS

From audit to revenue in 30 days.

Free Audit Call

We review your Klaviyo account, current flows, list health, and revenue attribution in a 30-min call. No pitch. Just honest feedback.

Strategy & Roadmap

We map out a 90-day plan: which flows to build first, what to fix, and how to hit your revenue targets.

Build & Launch

Our team designs, writes, and deploys. You review and approve. Typical onboarding: 2 weeks to first campaign live.

Optimise & Grow

Monthly reports, weekly standups, and ongoing A/B testing. We're not a set-it-and-forget-it agency.

CASE STUDIES

Results we've driven for brands like yours.

Beauty & Skincare

From €8K/mo to €32K/mo email revenue in 4 months

A scaling skincare brand had decent products but a completely neglected email channel — basic flows set up once and never touched. Open rates were tanking, and revenue attribution was a mystery.

  • Full Klaviyo audit and list hygiene sprint
  • Rebuilt all core flows with brand-first copy and design
  • Weekly campaign calendar with consistent sends
+300% email revenue 58% avg open rate 4× ROI in 60 days
See full case →

Email revenue / month

€32K

↑ from €8K/mo — 4 months

Open rate — 58%
Click rate — 12%

Health & Wellness

3× Black Friday email revenue YoY with a 90-day retention overhaul

A supplements brand was relying purely on paid ads and one-time buyers. Repeat purchase rate was under 15% and their email list was sitting idle. They needed a full retention engine, fast.

  • Post-purchase sequence rebuilt around product education
  • Winback and re-engagement flows deployed within week 2
  • BF/CM campaign series planned 8 weeks out
+43% attributed revenue Repeat rate: 15% → 34% 3× BF revenue
See full case →

Repeat purchase rate

34%

↑ from 15% baseline

Before — 15%
After — 34%

Fashion & Apparel

2.5× list revenue in 90 days with automated flows and segmentation

A growing fashion brand had a healthy list but poor segmentation — blasting the same emails to everyone. Deliverability was suffering and unsubscribes were climbing week on week.

  • Deep Klaviyo segmentation rebuild by purchase history and engagement
  • Personalised abandon cart and browse abandonment flows
  • Deliverability sprint: cleaned 40% of dead contacts
2.5× revenue/email Unsubs down 65% Inbox rate: 97%
See full case →

Revenue per email sent

2.5×

Multiplier in 90 days

Inbox rate — 97%
Unsubscribe rate — 0.08%
WHAT CLIENTS SAY

Straight from the founders.

★★★★★
"Their team took the time to truly understand our brand. Every email felt on-brand and drove real results. We 3× our Black Friday revenue compared to the year before."
SK
Sophie K.
CMO at Glow Ritual
3× BF revenue
★★★★★
"We were spending too much time on Klaviyo and not seeing the results. Scaleberry took over in 2 weeks and within a month our email channel was our top revenue driver."
TV
Tom V.
Founder at VitalBody
Top revenue channel
★★★★★
"Finally an agency that speaks Klaviyo fluently. They set up flows we didn't even know we needed and the impact was immediate. Revenue up 43% in the first quarter."
LM
Laura M.
Head of Growth at Luna Wear
+43% revenue Q1
★★★★★
"What sets Scaleberry apart is the strategy behind everything. Not just sending emails — actually thinking about the customer journey and where money is being left on the table."
MR
Marc R.
Founder at Moss & Maple
2.5× email ROI
WHY SCALEBERRY

We're not another cookie-cutter email agency.

Most agencies copy-paste flows and call it strategy. We think differently.

See how we work →

DTC-only focus

We don't do SaaS, B2B, or local businesses. We know e-commerce email inside-out.

Klaviyo-native

We live in Klaviyo. Your account gets built the right way from day one — no spaghetti.

Brand-first creative

We write emails that sound like you, not like a template. No copy-paste campaigns.

Fully transparent reporting

You get a live shared dashboard and a direct Slack channel with us. Every metric, every test result, every send — visible always.

Mathijs Harthoorn, founder of Scaleberry
MEET THE FOUNDER

Mathijs
Harthoorn

Founder, Scaleberry

Email is the one channel where you're never guessing who's listening. Everyone on that list opted in, on purpose. No algorithm, no cold traffic. Just your best customers, sitting in their inbox. That's why I built Scaleberry entirely around it.

Book a free audit call
FAQ

Answers to your questions.

READY TO GROW?

Let's turn your email list into your best-performing channel.

Book a free 30-minute audit call. We'll review your Klaviyo account and tell you exactly where the revenue is hiding — no strings attached.

Book your free audit call → Or send us a message

No commitment. Free audit. 30 minutes.