Retention Marketing Agency

We Prove What Email
Actually Earns

Click-only attribution. Holdout-tested results. No inflated numbers. Just verified revenue from email & SMS for DTC brands.

100+
eCommerce brands served
$50M+
Revenue generated
7–9 Fig
Companies we've scaled
Spring
Lume Cube
The/Studio
Yarbo
Golf Daddy
Mr. Christmas
a16z-backed brandsKhosla Ventures portfolioY Combinator alumniAirbnb / Coinbase / Opendoor foundersGraham Stephan (4.75M subscribers)
The Problem

Most Email Revenue
Numbers Are Inflated

Klaviyo defaults to 5-day open + 1-day click attribution. If someone merely loads an email — triggering the open pixel — and buys through a Google ad 5 days later, email gets full credit.

30–50%
Revenue inflation from open attribution
5-Day
Default open window credits unrelated buys
0%
Of agencies disclose this to clients

Your Klaviyo says $40K/mo in email revenue. Switch to click-only: $22K. That $18K difference was going to happen anyway — email just happened to be nearby.

The question isn't “how much revenue did email touch?” — it's “how much revenue did email CREATE?”

Our Standard

Click-Only Attribution
From Day One

Exact Klaviyo Settings We Apply

Opened email
Zero open attribution — this is the big one. Opens ≠ intent.
Clicked email — 5 Days
Real engagement. Someone clicked through and bought within 5 days.
Delivered text message
Delivery alone is not engagement. Receiving an SMS ≠ acting on it.
Clicked text message — 1 Day
Clicked a link in the SMS and converted within 24 hours.

Additional Exclusions

  • Exclude transactional messages — order confirmations and shipping notifications aren't marketing wins
  • Exclude bot interactions — security software pre-clicks links, inflating click rates
  • Exclude Apple Mail Privacy Protection opens — keeps diagnostics honest

We report 20–30% email revenue ratio instead of the inflated 30–40%. Our numbers are real. That's the point.

The Framework

Five Pillars of
Measurement

01

Attribution Lock

+

Click-only settings locked on day one. No mid-engagement goal-post moving.

02

Baseline Ratio

+

Your email revenue as a % of total store revenue BEFORE we touch anything.

03

Traffic Adjustment

+

We normalize for traffic changes so you only pay for real email improvement.

04

Holdout Testing

+

We suppress 5–10% of your list to prove true incremental impact.

05

Leading Indicators

+

Forward-looking metrics that confirm the trend before revenue shows up.

The Proof

Holdout Testing

How We Prove Causation, Not Just Correlation

Step 1

Split

Randomly segment 10% of your list into a holdout group

Step 2

Suppress

Holdout group receives no emails from the tested flow

Step 3

Compare

After 30 days: holdout purchase rate vs. email group

Step 4

Calculate

The delta = true incremental revenue email created

Email Group
14.2%
purchase rate
Holdout Group
8.7%
purchase rate
True Lift
+5.5%
incremental

At your list volume, that 5.5% lift = $6,200/mo in revenue that would NOT have happened without the emails.

This is the gold standard. When a CFO asks “how do you know email actually drove this?” — this is the answer.

Revenue Reality Check

See Your Real Numbers

Enter your current Klaviyo stats. We'll show you the attribution gap.

$

What your Klaviyo dashboard reports as email revenue

$

Total revenue from all channels combined

Enter your numbers above to see the attribution gap

Estimates use click-only attribution (55% of open-attributed revenue) and a target ratio of 22%. Actual results vary based on your brand, list health, and current program maturity.

Raymond — Founder of 11 Agency
About

Who Am I?

Raymond
Founder, 11.agency
  • Bootstrapping DTC brands since 2017
  • Built and scaled email/SMS programs for 100+ eCommerce brands
  • One brand acquired in 2022
  • Obsessed with retention — email, SMS, and lifecycle marketing
Next Step

Ready to See
Your Real Numbers?

No inflated opens counting as revenueNo credit-stealing from your paid adsNo moving goalposts mid-contractIndependent holdout verification anytime
1

Discovery Call

30-min screen share — we open your Klaviyo live, show you the attribution gap, and see if we're the right fit

2

Audit Call

Custom strategy based on your store's data, baseline ratio, and growth opportunity

3

Proposal Call

We lock in click-only attribution, document your baseline, and get to work

Let's Run the Audit

audit@11.agency