50+ e-com brands served

We Help 7-9 Figure Ecom Brands Increase Retention, LTV and Profits with
Email & SMS Marketing

We Help 7-9 Figure Ecom Brands Increase Retention, LTV and Profits with Email & SMS Marketing

Install Our 9-Figure Retention Systems So You Can Scale Past Plateaus.
Proven By 50+ Brands.

Trusted by over 80+ Brands

Trusted by over 80+ Brands

Real results for real e-commerce brands

See how we’ve helped DTC brands turn email into a predictable revenue channel.

Real results for real e-commerce brands

See how we’ve helped DTC brands turn email into a predictable revenue channel.

Real results for real e-commerce brands

See how we’ve helped DTC brands turn email into a predictable revenue channel.

From €147K to €739K in 60 Days

Case Study #1 : Home & Living

In just 60 days, we helped this brand massively expand its email contribution, scaling attributed email revenue from €146,822 to €739,451.

After working with us:

Email-attributed revenue increased by +403% in 60 days

Email share of total revenue grew from 25.3% to 41.5%

Monthly email revenue scaled from €147K → €275K → €739K

From CHF 38K to CHF 101K in 90 Days

CASE STUDY #6: Household Cleaning

Over a 3-month period, we helped this brand steadily grow its email channel while overall store revenue increased at a similar pace. Instead of relying purely on acquisition, email became a meaningful driver of incremental growth.

After working with us:

Email-attributed revenue increased from CHF 38,029 to CHF 101,124

That’s a +166% increase in email revenue

Total store revenue grew from CHF 170K to CHF 243K in the same period

From $33K to $170K in 60 Days

Case Study #2 : Health & Wellness

In 60 days, we helped this brand turn email into a meaningful growth driver — increasing attributed revenue from $33,225 to $170,207 while steadily growing total store revenue.

After working with us:

Email-attributed revenue increased by +412% in 60 days

Email share of total revenue grew from 9.3% to 33.9%

Monthly email revenue scaled from $33K → $101K → $170K

From £69K to £152K in 30 Days

CASE STUDY #7: Protein Brand

In just 30 days, we helped this brand significantly increase email revenue while total store revenue grew at a similar pace. 



After working with us:

Email-attributed revenue increased from £69,804 to £151,531

That’s a +117% increase in email revenue in one month

Total store revenue increased from £952K to £1.06M in the same period

From €24K to €124K in 30 Days

CASE STUDY #3: Supplement Brand

In just 30 days, we helped this brand dramatically increase email performance while overall store revenue grew at a much slower pace.

After working with us:

Email-attributed revenue increased from €23,645 to €124,401

That’s a +426% increase in email revenue in one month

Total store revenue increased from €138K to €366K in the same period

From €26K to €152K in 60 Days

CASE STUDY #8: Fragrance Brand

Over a 3-month period, we helped this brand turn email into a much stronger revenue driver while overall store revenue scaled rapidly. Email didn’t lag behind growth. It scaled alongside it.

After working with us:

Email-attributed revenue increased from €25,743 to €151,900

That’s a +490% increase in email revenue

Total store revenue increased from €200K to €556K over the same period

From $54K to $186K in 60 Days

CASE STUDY #4: Skincare Subscription Brand

In 60 days, we helped this brand significantly grow email revenue while keeping churn under control by excluding active subscribers from all email campaigns and flows.

After working with us:

Email-attributed revenue increased from $54,209 to $186,278 in 60 days

Email revenue grew by +243%, while total store revenue increased steadily

Email share of total revenue increased from 7.7% to 16.1%

From €107K to €148K in 30 Days

CASE STUDY #9: Supplement Brand

In 30 days, we transformed this brand’s email setup into a stronger, more reliable growth channel — increasing attributed revenue from €107,432 to €148,472.

After working with us:

Email-attributed revenue increased by 40% month over month

Email share of total revenue grew from 19.9% to 32.0%

Email generated €41,000+ in additional revenue in one month

From $443K to $547K in 30 Days

CASE STUDY #5: Protein Bar Brand

In just 30 days, we helped this brand significantly increase email performance while total store revenue remained nearly flat. Email became a larger and more reliable share of overall revenue.

After working with us:

Email-attributed revenue increased from $442,833 to $546,710

Monthly email revenue increased by more than $104K

That’s a +24% increase in email revenue in 30 days

From €62K to €118K in 30 Days

CASE STUDY #10: Another Fragrance Brand

In just 30 days, we helped this brand significantly grow email revenue while overall store revenue increased at a slower pace. 



After working with us:

Email-attributed revenue increased from €61,576 to €118,092

That’s a +92% increase in email revenue in one month

Total store revenue increased from €204K to €300K (≈ +50%)

Repurchase Rate & LTV Case Studies

Repurchase Rate & LTV Case Studies

Supplement Brand

Repurchase rate increased from 19% to 27% (+40%).




LTV increased from $48 to $57 (+18%)

Repurchase rate increased from 19% to 27% (+40%).




LTV increased from $48 to $57 (+18%)

Health & Wellness Brand

Repurchase rate increased from 21% to 29% (+34%).




LTV increased from $44 to $50 (+13%).

Repurchase rate increased from 21% to 29% (+34%).




LTV increased from $44 to $50 (+13%).

Protein Brand

Average repurchase rate increased from 13.3% in 2024 to 20.6% in 2025 (+55%).

Average repurchase rate increased from 13.3% in 2024 to 20.6% in 2025 (+55%).

Women’s Health Brand

Repurchase rate nearly doubled in 2025, growing from 12.5% to 24.5%.

Repurchase rate nearly doubled in 2025, growing from 12.5% to 24.5%.

Achieved despite a core product designed to last up to 10 years.

Achieved despite a core product designed to last up to 10 years.

Emails designed to sell

Emails designed to sell

Beautifully crafted emails engineered to maximize opens, clicks and revenue.

Here's why your e-commerce brand struggles to scale

Here's why your e-commerce brand struggles to scale

Your campaigns and flows are either out-dated or are not as good enough as you need them for your current revenue stage, leading to missing revenue?

Your campaigns and flows are either out-dated or are not as good enough as you need them for your current revenue stage, leading to missing revenue?

Your repeat purchase rate is too low and you’re not able to make customers come back and buy multiple times again?

Your repeat purchase rate is too low and you’re not able to make customers come back and buy multiple times again?

You are missing an actual email marketing expert that can take care of your entire email marketing and retention strategy?

You are missing an actual email marketing expert that can take care of your entire email marketing and retention strategy?

Liking what you see?

Liking what you see?

Then book your free audit and uncover what’s holding your brand back from generating more revenue and profit with email.

We have worked with

Other agencies
Other agencies

No idea how to increase repurchase rate or CLV

Completely outsourced with no founder involvement

Rely on basic Klaviyo dashboard

Generic templates & playbooks reused across clients

Junior-heavy teams learning on your account

Retentiononly
Retentiononly

Measurably increase repurchase rate and CLV using 15+ proven retention strategies

Founder-led involvement on every account with senior execution only

Advanced analytics and data tools we pay for ourselves

Clear strategy and prioritization tailored to your brand and revenue stage

Highly experienced team only, each with 3+ years in ecommerce retention

You book a free audit and onboarding call

Book a free audit and onboarding call

Step 1

We audit, rebuild and optimize your system

Step 2

You scale with measurable improvement in repurchase rate and CLV

Step 3

More than just generic email marketing

More than just generic email marketing

World Class Design Team

Our emails are crafted elegantly to reflect your brand while being conversion-optimized.

Our emails are crafted elegantly to reflect your brand while being conversion-optimized.

High Converting Copywriting

We know how to speak with your brands voice, while using marketing psychology elements to generate maximum conversions.

We know how to speak with your brands voice, while using marketing psychology elements to generate maximum conversions.

Omni-Channel Retention Strategy

Our goal is not just to do your email marketing. We help you create an Omni-Channel Retention System with email, WhatsApp, SMS, direct mailings and a Facebook group to contact your list exactly where they are most active.

Our goal is not just to do your email marketing. We help you create an Omni-Channel Retention System with email, WhatsApp, SMS, direct mailings and a Facebook group to contact your list exactly where they are most active.

Data Analysis

We will analyze your data to identify the most important metric we need to concentrate on and identify which products will most likely bought in the next purchase of your customers to increase cross-sells.

We will analyze your data to identify the most important metric we need to concentrate on and identify which products will most likely bought in the next purchase of your customers to increase cross-sells.

Surveys

We will craft surveys that will provide us with the most important data we need to optimize not only your retention strategy, but to improve your website and your ads.

We will craft surveys that will provide us with the most important data we need to optimize not only your retention strategy, but to improve your website and your ads.

Done-For-You

Everything we do is completely done for you. No effort from your side required.

Everything we do is completely done for you. No effort from your side required.

Hi, I’m Idris and I’m the founder of Retentiononly.


Doing email marketing for the past 6 years and being invested over 32k EUR to receive coaching from the best agencies and freelancers in the German speaking market has made me learn their collected best practices they have accumulated over the years.


I never understood why agencies would work with more clients that they could actually handle and get results for, so I’m taking pride in only working with a hand-full of brands that I can take care of just as you as the brand owner would do yourself if you would have my expertise.


But importantly I care about you and your business.

We have worked with

Frequently asked questions

Frequently asked questions

What is your guarantee?

What is your pricing structure?

How do I get started with Retentiononly?

What can I expect on the initial call?

What is the difference between you, an employee, a freelancer and an agency?

Will I spam or annoy my customers?

Ready to increase Retention, CLV and Profits with Email Marketing?

Ready to increase Retention, CLV and Profits with Email Marketing?

We have worked with