The 5% of emails that earn 41% of the revenue

Flows make up 5.3% of the emails a brand sends and earn nearly 41% of its email revenue. That’s from Klaviyo’s 2026 email benchmarks, drawn from more than 183,000 brands on the platform. Campaigns account for the other 94.7% of sends.

The gap shows up everywhere else in the same data. Flows average a 5.58% click rate against 1.69% for campaigns. Revenue per recipient is nearly 18 times higher. And 48% of flow revenue comes from new buyers, compared with 16% for campaigns. Campaigns mostly sell to people who already buy. Flows are where a list turns into first orders.

The part nobody checks

Flows earn more because they send at the moment someone acts: signing up, viewing a product, leaving a cart, placing an order. That’s also why they get neglected. A flow is built once and runs without anyone pressing send. A weak campaign shows up in Monday’s report. A flow sending the wrong email to the wrong person keeps doing it every day, to every new subscriber and every new buyer, until someone opens the account and looks.

Every flow runs on four rules:

• Trigger: what starts it.

• Timing: the wait between emails.

• Filters: who qualifies for each email.

• Exit: what stops it.

Most brands spend their time on the emails. Most of the revenue is decided by the rules.

What we found in a real account

This summer we audited a sun care brand with eight flows live. That’s more than most brands its size have. On paper, it was a complete program.

The first email in the welcome flow earned 87% of the flow’s revenue, roughly a third of all email revenue in the account. Emails four through seven earned between $0 and $38 each across about 1,170 sends, while steadily collecting unsubscribes.

The cause was one missing rule. The welcome flow had no exit for buyers. Someone who bought from the first email kept getting six more asking them to make a first purchase. The post-purchase flow restarted its full sequence on every order. The replenishment flow kept sending after people had already reordered.

The abandonment flows were set up correctly. Cart, checkout, and browse all had the right exits. Shoppers who left were handled carefully. Buyers were handled carelessly, and buyers were where the unsubscribes came from.

None of it needed rebuilding. It needed a placed-order exit, a re-entry window, and a shorter welcome series where each email has its own job.

Seven flows, built right

Darkroom’s recent breakdown of email automation lists ten flows every ecommerce brand should run. Our view is that most growing wellness and lifestyle brands should start with seven, and not add more until those seven are right. Ten flows with loose rules will lose to seven with tight ones.

These are the seven we build first, in about 20 emails total:

1. Welcome. Starts when someone joins the list. Its job is the first order. It stops when they buy.

2. Site abandon. Starts when someone visits but views no product. One email to get them to a product. It stops when they view, add to cart, or buy.

3. Browse abandon. Starts when someone views a product and leaves. It brings them back to that exact product and stops at add to cart or order.

4. Cart abandon. Starts when something is added to cart. It stops when checkout starts or an order is placed.

5. Checkout abandon. Starts at checkout, the highest-intent moment in the account. It stops at the order.

6. Post-purchase. Starts with the order. Its job is to help people use what they bought so the next order comes naturally. A re-entry window keeps it from restarting on every order.

7. Winback. Starts when a buyer goes quiet past their normal reorder window: 60 to 90 days for supplements and skincare, 90 to 120 for apparel. It stops when they buy.

The first five are aimed at first orders, which is why so much flow revenue comes from new buyers.

Back in stock, replenishment, and VIP flows earn their place when the business calls for them. A brand that sells in limited drops needs back in stock early. A consumables brand needs replenishment once it has reorder data. Neither one fixes a welcome flow that keeps selling to people who already bought.

How to tell if a flow is working

Look at each email, not the flow total. A flow total can look healthy while one email does all the work and the rest cost you subscribers. That’s exactly what the audit found.

Judge flows by revenue per recipient and placed orders, not opens. Apple Mail Privacy Protection inflates open rates, so opens mostly tell you about deliverability.

Check the exits on every purchase-side flow: welcome, post-purchase, and replenishment. In the accounts we audit, abandonment flows are usually filtered correctly. Purchase-side flows are where buyers get treated like strangers.

Review every flow once a quarter. Darkroom recommends the same cadence. A flow can keep running for months after it stops working, and nothing in the dashboard will flag it.

A flow is the one part of an email program that runs whether anyone is watching. That’s why it earns more per send than anything else, and why it needs checking more than anything else.