Klaviyo email marketing tends to get treated as an afterthought by a lot of ecommerce brands, something to fire off once a week and forget about. This client's numbers make a pretty strong case for the opposite approach. Between September 1, 2025 and January 14, 2026, their store pulled in $927,220.16 in total revenue, up 27% from the period before. Of that, $216,550.13 came directly from email, attributed revenue that grew 45%, nearly double the pace of the store overall. Here's what actually drove that, and why the split between campaigns and flows tells the real story.
A Channel Growing Faster Than the Store Around It
Total revenue climbing 27% is a solid result on its own. But when the email channel grows at 45% over the same window, it means email isn't just riding the store's momentum, it's driving it. Klaviyo attributed revenue accounted for 23.35% of every dollar the store made during this period. For context, in ecommerce, getting 20% to 30% of total revenue from email is widely considered the mark of a healthy, mature retention engine. This store got firmly inside that bracket without touching SMS, which sat at $0.00 throughout.
“Automated flows generated $143,447.48 on autopilot, outperforming manual campaigns almost two-to-one and driving nearly a quarter of total store revenue.”
The Real Driver: Automated Flows vs. One-Off Campaigns
A lot of brands sink hours into writing, designing, and scheduling weekly campaigns, and there's a place for that. But look at where the $216K actually came from: Campaigns brought in $73,102.65 across 44 sends, with a 38.30% open rate and a 1.25% click rate. Solid numbers that grew 25% over the previous period.
Flows, on the other hand, generated $143,447.48, representing 66.24% of all email revenue, nearly double what campaigns produced. That flow revenue grew 59% period over period, off just 38 active flows. Think about what that actually means: the automated sequences, welcome series, abandoned checkout, post-purchase follow-up, browse abandonment, were doing nearly two-thirds of the heavy lifting around the clock, without someone having to sit down and hit send every few days.
Why Flows Outperform Campaigns at Scale
The math behind why flows beat campaigns isn't complicated. A campaign goes out to a list at a time you choose, regardless of what the subscriber is doing at that exact moment. A flow triggers based on what the customer just did: viewed a product, left a cart behind, or completed a second purchase. The relevance is higher, the timing is sharper, and the numbers reflect it. When two-thirds of your email revenue comes from flows, you've built a system that makes money while you focus on other parts of the business.
What This Means for Your Ecommerce Brand
If your email channel is bringing in less than 20% of your total store revenue, or if you're relying entirely on manual weekly newsletters to get there, you're leaving a significant amount of money on the table. The gap between a 27% store growth rate and a 45% email growth rate is what happens when you treat Klaviyo as an automated revenue channel rather than a broadcast tool.
Whether you're starting from scratch or sitting on a list that isn't pulling its weight, getting your core flows built and optimized is usually the fastest route to reliable, compounding revenue. Let's take a look at what your email channel could actually be doing.