Retention agency · Email and CRM

Brands built on retention.

We run the email and CRM programme of a small group of e-commerce brands. Strategy, concepts, copy, design, build and reporting, done by the two founders you talk to. Nothing templated. No boring emails.

Get started means a free audit of your account within 48 hours. We tell you what we see, and whether we are the right fit.

Alcanside email designed as a case file
Alcanside email designed as a roulette table
Wolf of Washington email designed as a dossier timeline
Built forICON AmsterdamAlcansideWolf of WashingtonSorry I'm SleepingMayfair and FinchGraceful PureMaison BordelaiseElla & OliviaKELV
The work

No boring emails.

Every email starts from an idea, not a template. A roulette table for a colour choice. A case file for a material story. A metro map for a supplement range. This is what that looks like in the inbox.

AlcansideCampaign

Rouge ou noir. Two best-selling colours as a roulette table, the return policy as the house rule.

AlcansideBrand story

The secret file. The Alcantara story told as an opened case file with exhibits and a receipt.

AlcansideLaunch

iPhone Duo before GTA 6. A launch timed against a game, with toggles instead of a list.

ICON AmsterdamProduct

Sharp at 08:00, still sharp at 18:00. One pair followed through one working day.

Wolf of WashingtonBroadcast

The truth comes later. A dossier timeline that earns the sign-up instead of asking for it.

XXL NutritionConcept

Step in at your goal. A supplement range drawn as a metro map, one line per goal.

Ella & OliviaCampaign

Get dressed in one decision. Three sets, three stories, one click.

CHOIXConcept

One trouser, 7am to midnight. A day in the life told by the clock.

ICON AmsterdamProduct

The Vito. Seven shades, cut out and stacked instead of the usual product grid.

Sorry I'm SleepingWelcome

A handwritten note from the founder, polaroids included. No hero, no buttons.

Why we exist

Most retention agencies send the same email to every brand.

01

Templates, not ideas

One layout, a swapped logo, four promos a week. Your customers see the same email from five brands and stop opening any of them.

02

Volume sold as strategy

More sends look like more work. Retention is not how often you email. It is whether people come back and buy again without a discount.

03

You never meet the people doing the work

A senior sells, a junior builds, an account manager reports. Every question takes a week and a Slack channel.

We started On Retention to do this the way an in-house team would, if that team had eight years of design and its own engine.

How we work
How we work

In-house, without the hiring.

You get a retention team of two founders with an engine we built ourselves. We think, write, design, build and measure. You talk to us directly, and you approve a plan once a month.

01 · Strategy

A plan with a number on it

Audit first, then a calendar per month: which segment, which moment, which idea, and what it should bring in. You approve it in one go.

02 · Concepts and copy

One idea per email

Every campaign starts as three concepts, one of them uncomfortable. Copy is written before a single pixel is placed.

03 · Design and build

Built in your brand, by hand

Designed on your own product photography, built into Klaviyo or Customer.io, tested on the phone in dark mode before it goes.

04 · Measurement

A report you can read in two minutes

Checked against Shopify, not just the email tool. Every week what worked, every month what changes next.

The first 60 daysTwo new brands a month, so every start gets our full attention
Day 0

The audit

Read-only access, 48 hours, the three biggest leaks and what we would do first.

Day 3

Pop-up and welcome live

The front door fixed first, because everything after it depends on it.

Day 7

Foundation flows live

Browse, cart, checkout, post-purchase and win-back, each with its own idea.

Day 30

First campaign month

The calendar you approved, sent. The first report on the first.

Day 60

Measured result

Retention against your own baseline, in your own Shopify numbers.

Selective, on purpose

We take on two new brands a month. This is who we say yes to.

Not because we are precious about it. Because a programme like this only pays off for a brand that is already working, and we would rather tell you that on day one.

If you are close but not sure Get started anyway.

The audit is free and the answer is honest. If we are not the right fit, we say so and tell you what we would do instead.

  • ✓
    You sell your own products

    On Shopify or a comparable platform, with Klaviyo or Customer.io in place.

  • ✓
    You do at least €1M a year online

    With a margin that can carry a retainer without it hurting. Retention is a second-order lever. The first order has to work.

  • ✓
    Someone who can say yes within a day

    A founder or a marketing lead. We move fast and we need you to move with us.

  • ✓
    You want a programme, not a promo

    Education, proof, community, product and sales, in balance. A discount at most once a month.

  • ✕
    Not for you if

    You need volume this week, you sell what everyone sells, or you want every pixel approved by committee.

The two of us

Two founders. No layers.

T

Thijs van Baarsen

Design, copy and build

Eight years of design and four years running email at ICON Amsterdam end to end: strategy, copy, design and Klaviyo. Built the engine that lets us design an email from scratch for every send instead of reusing last week's.

KlaviyoCustomer.ioDesign systemsCopy
F

Floris Meester

Strategy, growth and accounts

Built and grew e-commerce stores himself before moving to the retention side. Runs strategy, testing and the numbers for our brands, and is the one who says no when a plan does not add up.

StrategyTestingShopifyReporting
Get started

Send us your account. We send back what we see.

Read-only access to your Klaviyo or Customer.io. Within 48 hours you get our audit: the three biggest leaks, what we would do first, and whether we are the right fit. Free, and no deck to sit through.

1

You fill in the form

Two minutes. We reply from our own inboxes, not a sequence.

2

We read your account

Flows, campaigns, list health and deliverability, against your Shopify numbers.

3

You get an honest answer

What is leaking, what we would fix first, and when we could start.

No newsletter, no sales sequence. One audit and one answer.