Email & Retention
Does Klaviyo over-attribute revenue?
Klaviyo can attribute more revenue to email than you would consider truly incremental. That does not necessarily mean the platform is "wrong." It means attribution and causation are different.
Attribution follows rules
If a customer interacts with a message and later buys within the eligible window, the system can assign revenue according to that model.
Loyal customers create a challenge
Email subscribers are often existing customers with high purchase intent. They may have reordered even without the campaign. Attribution cannot directly observe that alternate outcome.
Overlap is normal
A purchase can appear in Klaviyo, Meta and Google simultaneously. Adding those revenue figures together will overstate actual store sales.
Use experiments for stronger evidence
For larger lists, holdout groups and controlled send tests can help estimate incremental lift. Compare total Shopify revenue/customer behaviour, not only the email dashboard.
The best use of Klaviyo attribution is to compare email activity consistently while keeping the wider business context visible.
Separate attributed revenue from business lift
If Klaviyo revenue looks far stronger than the actual change in Shopify sales, send us an inquiry. We can help separate attributed revenue from business lift.