Email 'Drove' 40% of Revenue. Your Ads Found Those Customers.
Klaviyo's default attribution credits an order to any email opened or clicked within days of purchase. Paid ads that brought the customer back get nothing. TrueROAS shows the whole journey so retention and acquisition are measured fairly.
Tracks every major ad platform. Sends verified orders back to Meta and Google.
Sound familiar?
What you are probably seeing
Klaviyo attributed revenue is a large share of total revenue
Paid retargeting looks weak although those customers are on your list
Ads and email both claim the same weekend sale
You are considering cutting paid because 'email works'
Why it happens
This is not a bug. It is how the platforms are built.
Open-based attribution
Klaviyo can credit an order to an email that was merely opened. Apple Mail Privacy Protection opens emails automatically, inflating this further.
Long windows on frequent senders
If you email several times a week, almost every purchase falls inside a 5-day window of some email.
No visibility into paid touches
Klaviyo does not see the Meta or Google click that happened between the email and the order.
What it costs you
Acquisition gets cut in favour of 'free' revenue. The list stops growing, and email revenue falls with it a few quarters later.
How TrueROAS fixes it
Start from the order, not from the ad platform
Email tracked with the same rules as paid
TrueROAS tracks Klaviyo clicks, not opens, and applies the same order-level de-duplication as every other channel.
Journeys that include email and ads
See 'Meta ad, email click, purchase' on the order and decide how to credit it using your store's own patterns.
Acquisition vs retention view
Separate first orders from repeat orders so you can judge what paid media is really bringing in.
Others track. We triangulate.
Tracking alone drops sales to iOS, ad blockers and dead cookies. Three signals catch every one.
Tracking
Surveys
AI MMM
How it works: three signals cross-check every sale.
Other tools: 1 bucket
Sales lost
Tracking
1 bucket → most sales missed.
TrueROAS: 3 buckets
Order-verified
Tracking
Surveys
AI MMM
3 buckets → far fewer sales lost.
Ask your data anything.
One trusted source of truth, wired into the AI you already use.
TrueROAS
data layer
Claude
ChatGPT
Cursor
MCP
“Which ad should I scale?”
"Meta said 1.5 ROAS. TrueROAS showed 4.5. I almost turned off a winner."
"Very good app. I almost turned off an ad set that had a 4.5 ROAS because Meta tracked not all of the sales and had a Meta 1.5 ROAS."
LederKur
Shopify store, Germany. Verified review
When you do not need this
If you send one email a week and rarely retarget your list, Klaviyo's numbers are probably reasonable. This page is for stores with active flows and daily campaigns.
Questions media buyers ask
Straight answers
Should I switch Klaviyo to click-only attribution?
Yes, it is a sensible free first step and removes most of the Apple Mail inflation. It still does not solve overlap with paid channels; that needs order-level attribution across all channels.
Go deeper
Understand why this happens
Five-minute lessons, written by the founder, no jargon.
Related