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Flows stuck in default
Welcome, abandoned cart, post-purchase running on Klaviyo's defaults. We rebuild every flow on-brand so it actually earns.
Now taking on new partners — Q2 2026
Turn your email list into a monthly revenue machine.
We build and manage email systems for eCommerce brands that turn subscribers into repeat buyers. Strategy, flows, campaigns, design, copy, reporting — one pod, one fee, one clear revenue line.
- +20–40% incremental email revenue in 90 days
- DTC ecommerce only
- Free audit — yours to keep, no obligation
50+ brands trust Mailkey with their email channel
DTC teams across the EU & US — fashion, beauty, home, F&B.
Trusted by fast-growing DTC teams in the EU & US
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Revenue generated for partners
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Emails sent & optimized
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Happy brands partnered with
01 · The quiet revenue leak
Your store is bleeding money between the clicks.
Most DTC brands lose 20–40% of potential email revenue to broken flows, weak segmentation and inconsistent campaigns. Three quiet leaks, every month:
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One campaign a week, no segmentation
Same email, same list, same time — sender reputation drops. We ship tailored sends per segment, on a cadence that fits your brand.
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No feedback loop
Nobody watches the dashboard, the list churns. We review deliverability, engagement and revenue with you every month.
·Subscriber
·Email
·Purchase
·Repeat
02 · What we run for you
A full CRM department, without the hires.
One pod owning strategy, design, copy, automation and deliverability — end to end.
Flows that compound
Welcome, browse + cart abandonment (email + SMS), post-purchase, win-back, VIP tiers, back-in-stock. The full map — your list earns 24/7.
- CoverageEmail + SMS
- ApproachFlow by flow
Campaigns that ship
A cadence segmented by engagement, LTV and product affinity. Copy, design, QA, scheduling — handled.
SMS that doesn't annoy
Conversational flows, VIP drops, back-in-stock pings. Attentive or Klaviyo, compliant across FR, EU, UK, US.
Design + copy in-house
On-brand editorial design. Copy that sells without shouting. Every send validated with you before it ships.
Deliverability ops
DMARC, DKIM, SPF, warm-up, list hygiene. We keep you out of Promotions — revenue lives in the Primary tab.
03 · Why Mailkey
Four principles. No exceptions.
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We focus on revenue, not vanity metrics.
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Built exclusively for eCommerce brands.
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Systems over one-off campaigns.
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Every decision is data-driven.
04 · Real accounts, real numbers
Case studies with screenshots, not promises.
Sample dashboards below show what the monthly view looks like for our partners. Real case studies from live brands coming soon.
Rebuilt the full email engine, end to end.
A French silk-and-cashmere brand with a large subscriber list, previously sending one newsletter a month. We rebuilt every flow, launched segmentation tiers, and shipped on-brand campaigns on a weekly cadence.
- ✓ Full CRM stack rebuilt from scratch
- ✓ Flows & campaigns running on cadence
- ✓ Reporting cadence locked, action items every month
Dashboard and numbers shown are illustrative mockups — real case data from live brands lands here as it comes in.
Editorial · autumn drop
Email · Apr 06 · sample view
52.1%
Open rate
2,828 recipients
3.8%
Click rate
206 recipients
0.42%
Placed order
23 recipients
€2,148
Revenue
€93.4 AOV
Apr — monthly attribution window · sample
€180,240
Total revenue
€38,850
From email & SMS (21.5%)
Email turned into a reliable revenue channel.
We rebuilt the flows, launched segment-based drops, and moved the brand from one monthly send to a consistent cadence — same list, more output.
48.9%Avg open
+142%Email revenue
28%Revenue share
From zero flows to a full CRM stack.
A Shopify store with no flows set up. We built the full engine, layered SMS on top, and locked in the reporting cadence.
$128KNew revenue
8.6×Return on fee
31%Rev from email
05 · The craft
What your emails could look like.
Editorial design. Direct-response math. Every send built from scratch.
06 · How it works
Five steps. Clear deliverable at each one.
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Audit & opportunity mapping
We map your setup and find where revenue is leaking.
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Strategy & system design
Flows, campaigns and segmentation built around your brand.
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Build & launch
Design, copy, automation, deliverability — shipped end-to-end.
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Scale & optimize
Test, refine, compound — month over month.
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Reporting & collaboration
Every send validated with you. Clear monthly reports.
07 · The guarantee
If your email revenue doesn't grow, we work for free until it does.
No clauses, no asterisks. We're paid on outcomes — same skin in the game as you.
08 · Straight from the founders
Founders and CMOs, not Fiverr accounts.
"The first agency that showed up to the kickoff already knowing my ACV, my repeat-rate and where my flows were leaking. They treated email like a P&L, not a deliverable."
Léa Marchetti
CMO · Skincare DTC, France
+38% revenue
"We went from one newsletter a month to a real campaign cadence. Email finally feels like a channel we run, not an afterthought."
Marc H.Founder · Fashion, Paris
+142% email rev.
"The audit alone was worth more than months of our previous agency. I forwarded it to our investor — he asked who made it."
Stanley VossFounder · Home goods, US
+€78K in 60d
"They care about my P&L like it's their own. Abandoned cart, VIP, post-purchase — all lifted. We finally see our list compound."
Chris B.Founder · DTC lifestyle, UK
+24% LTV
"Design that finally matches our brand. Copy that finally sells. Reports I actually read."
Amélie D.Head of growth · Accessories, FR
+31% AOV
"They treat our list like their own business. Every email is reviewed with us before it goes out. Nothing ever feels off-brand."
Tomás R.CEO · DTC, EU
21% rev. share
09 · FAQ
Questions founders ask before booking the call.
Do I need a Klaviyo account already?
No. If you're on Mailchimp, Omnisend, ActiveCampaign, Sendinblue, or anything else, we migrate you to Klaviyo during onboarding — and we make sure nothing breaks along the way.
How fast will I see revenue?
Timelines depend on brand size, current setup and scope. Generally, first campaigns go live early in the engagement, flows get rebuilt shortly after, and the real compounding shows up in the following months. We'll walk you through a clear plan during the audit.
What brands do you work with?
Mostly DTC e-commerce — fashion, skincare, home, F&B, accessories. We don't work with gambling, supplements with medical claims, or dropshipping. If it's a brand you'd proudly show your family, we're probably a fit.
Are there long contracts?
No long-term lock-ins. We work month-to-month with a short notice period on cancellation. The goal is a partnership that makes sense to keep renewing — not one you're tied into.
Who actually does the work?
A small pod: a strategist (your main contact), a designer, and a copywriter — in-house, never offshored. You'll work with the same people every week.
What's in the free audit?
A structured breakdown of your current email setup: flows, templates, deliverability, segmentation, calendar. We show you what's working, what's leaking, and where we'd focus first. You keep the audit whether we work together or not.
10 · Let's make the list pay
In 30 minutes you'll know exactly where your list is leaking.
Book a no-pitch call with a Mailkey strategist. We walk through your setup live, flag what we'd fix first, and give you a clear plan. You walk away with the audit — even if we don't end up working together.
✓ Quick turnaround
✓ No sales pitch
✓ You keep the audit
No revenue growth? We work for free.
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Request received.
We'll be in touch shortly with a calendar link and a short intake. No spam, no drip — we hate that too.