An email marketing agency that makes your own list pay off.

As a Klaviyo partner, we build the channel where you don't need to buy media: segmentation on real behavior, flows that sell day and night, campaigns with rhythm, and the advanced Klaviyo layer most brands leave untouched.

The cheapest revenue is in your own list.

Your list is the audience you already have: people who know your brand and often have bought before. The revenue is in the personalization. Who gets what, at what moment, and based on which behavior. That's where the magic is.

We build that in four layers. Segmentation lays the foundation, flows do the heavy lifting, campaigns bring rhythm and peaks, and the advanced Klaviyo layer makes it predictive: RFM segments, catalog insights, predicted purchase date and customer value. Each layer has its own KPI, so you can see what each one returns.

Klaviyo Platinum Partner

As a Klaviyo partner, we are in the tool every day and see across dozens of accounts what works and what doesn't. That saves you months of trial and error: we know upfront which setup fits your type of store, and we get new features first.

Four layers, from foundation to prediction.

Each layer builds on the previous one. We start with segmentation and measurement, and end with the Klaviyo features where the real difference lies.

Segmentation

Who is on your list and what do they do. We split your customers into active buyers, dormant profiles, visitors who haven't bought yet and VIPs. List hygiene and a sunset policy keep your reputation and your numbers clean.

Flows

The heavy lifting happens automatically. Welcome series, abandoned cart, abandoned product page, post-purchase, cross-sell, win-back and replenishment. Each flow follows your purchase cycle and is built differently per segment.

Campaigns

A calendar that fits your offer and your season. Copy and design in your brand style, sent at a frequency your list can comfortably handle.

Advanced Klaviyo

RFM segmentation on real customer value: who buys recently, often and a lot. Catalog and product insights feed automatic recommendations. On top of that, predictions such as expected next purchase and customer value, enriched with custom fields from your CRM or ERP.

Klaviyo implementation & migration

A new setup or a switch from Mailchimp, MailerLite or ActiveCampaign. We connect Shopify or WooCommerce correctly, set up events and tracking, and deliver a data structure you can build on for years.

Deliverability & testing

SPF, DKIM and DMARC set up correctly, domains warmed up and inbox placement monitored. Plus a fixed testing rhythm on subject lines, offers and timing, with reporting on revenue per recipient.

From audit to predictable revenue.

01 Audit

An honest review

We go through your account, flows, segments and deliverability. We draw up a priority list of the levers with the most impact, and the revenue still being left on the table today.

02 Foundation

Data and segmentation

Integration and events set up correctly, segments built on real behavior, list hygiene and sunset policy in place, SPF, DKIM and DMARC in order.

03 Flows & campaigns

The program goes live

Core flows built and timed to your purchase cycle, campaign calendar set up, copy and design in your brand style. From here on, automation brings in revenue every week.

04 Advanced

RFM and prediction

RFM groups based on recency, frequency and monetary value. Catalog insights and predictive segments steer your offers on customer value, so every customer gets an offer that matches their value.

Proven results with email

5.0 Google reviews
Revenue from email
↑31%
Share of total revenue from email after 6 months.

OR Coffee

Specialty coffee roaster from Ghent. Replenishment flows based on the actual purchase cycle per coffee, and RFM segments that treat subscribers differently from one-time buyers.

Revenue per recipient
↑84%
Increase in revenue per email sent in 3 months.

Billion Avenue

Antwerp jewelry brand. From one newsletter to everyone, to segmented campaigns with catalog insights that show different collections per profile.

Lead-to-customer
↑46%
More inquiries turning into a sale after the nurture flows.

Kleyo

Belgian proptech platform. A nurture program that guides owners step by step through the selling process, with follow-up based on behavior instead of time.

An email agency that steers on revenue.

We work with ambitious companies that want to run their email channel on revenue. You talk directly to the people who build your flows and check your numbers.

  • Certified Klaviyo partner, with a direct support line
  • RFM and predictive segments standard in every build
  • Copy and design in-house, in your brand style
  • Reporting on revenue per recipient, not on opens

Everything you wanted to know about email marketing.

The questions we get most often, answered honestly. Missing one? Send us a message — we reply within one business day.

What does an email marketing agency do?
An email marketing agency builds and manages your email channel: segmentation, automated flows, the campaign calendar, copy and design, deliverability and reporting. At Fourfront we do this as a Klaviyo partner, focusing on revenue per recipient instead of open rates.
Why Klaviyo and not Mailchimp or another tool?
Klaviyo connects directly to your webshop data: products, orders, browsing behavior and predictive values. That lets you segment and automate on real behavior instead of a static list. If you use another tool, we first check whether a migration is worth the investment.
What is the difference between flows and campaigns?
Flows are automated emails triggered by behavior: welcome series, abandoned cart, browse abandonment, post-purchase, win-back. Campaigns are the emails you send yourself at a chosen moment. Flows usually deliver the largest share of your email revenue; campaigns provide rhythm and peaks.
What do you mean by advanced Klaviyo?
The layer above the standard setup: RFM segmentation on recency, frequency and monetary value, catalog and product insights to automate recommendations, predictive analytics such as expected next purchase date and CLV, and custom properties coming from your CRM or ERP.
How much revenue can I expect from email?
For a healthy webshop, typically 20 to 35% of revenue comes from email and SMS, most of it from flows. With a small or cold list, it starts lower: then we first work on list growth, segmentation and deliverability.
What about GDPR and deliverability?
We work with explicit opt-in, correct suppression and a sunset policy for inactive profiles. Technically, we set up SPF, DKIM and DMARC correctly and warm up new domains. That keeps your sender reputation intact — the foundation of every email result.
Do you write and design the emails yourselves?
Yes. Copy, design and build in Klaviyo are done in-house, in your brand style. If you work with your own designer, we provide the structure, segments and testing setup and build the templates together.

Ready to get revenue from your own list?

We review your Klaviyo account, flows and segmentation and send you an honest report with the top 5 levers within a week. No sales pitch, just good advice.