Email Flow Revenue Calculator: What Your Flows Should Make
Enter your flow volume, open, click and conversion rates, average order and store revenue. The calculator shows expected monthly flow revenue, what share of the store that is, and how far you are from a benchmark built from two dated 2026 sources that you can edit.
Short answer
Expected flow revenue is flow emails delivered times click rate times the share of clickers who buy times average order value. Example: 20,000 flow emails a month at Klaviyo's 5.58% good flow click rate, 20% of clickers buying and a $50 order is $11,160, or 11.2% of a $100,000 store. Against a benchmark of 12.3% (Eightx's 30% email share of revenue times Klaviyo's 41% flow share of email revenue), that is $1,140 a month short.
Email Flow Revenue
The example values are filled in. Replace them with yours from Klaviyo or your email tool; every result recalculates as you type.
Your list and store
Subscribed profiles you can email.
All sales, from every channel the flows can reach.
In Klaviyo: the delivered count across all live flows for the last 30 days.
Welcome, cart, browse, post-purchase and so on.
Average trigger volume per flow.
Average emails each person receives.
Your flow rates
Opens divided by delivered. Default is Klaviyo's 2026 good flow open rate.
Clicks divided by delivered, not by opens. Default is Klaviyo's 2026 good flow click rate.
Orders divided by clicks. 20% is our example input, not a benchmark.
Revenue divided by orders.
Benchmark (edit both)
Eightx, June 27, 2026: 30% to 40% for brands run on flows; 15% to 20% for broadcast-led brands.
Klaviyo 2026 benchmarks: flows drive nearly 41% of email revenue.
Expected monthly flow revenue
$11,160
from 223 orders on 20,000 flow emails
Share of store revenue
Flow revenue divided by store revenue
Benchmark share
12.3%
$12,300 a month at your store size
Gap against the benchmark
$1,140 short
1.1 points below the benchmark share
Revenue per email
$0.56
Flow revenue divided by emails delivered
Per subscriber
$0.45
flow revenue per subscriber per month
The formulas, in plain words
- Flow emails per month = the number you enter, or live flows times people entering each flow times emails per flow.
- Clicks = flow emails times click rate. Orders = clicks times conversion rate of clickers.
- Expected monthly flow revenue = orders times average order value.
- Share of store revenue = flow revenue divided by total store revenue.
- Benchmark share = email share of store revenue times flow share of email revenue.
- Gap = benchmark share times store revenue, minus flow revenue.
- Revenue per email = flow revenue divided by flow emails. Per subscriber = flow revenue divided by list size.
- Open rate does not enter the revenue math. It is used only to check that your click rate is not higher than your open rate.
Volume, Clicks, Orders, Then the Benchmark
Flows are the automated emails that send when someone does something: joins the list, leaves a cart, browses a product, buys, or goes quiet. Campaigns are the one-off sends you schedule. This calculator covers flows only.
Flow revenue comes from three numbers multiplied together: how many flow emails go out, how many of those get a click, and how many clickers buy. Multiply by average order value and you have a monthly figure. Open rate is shown but not used in the revenue math, because Apple Mail Privacy Protection loads images automatically and inflates opens. Clicks are a cleaner signal.
Flow emails per month
Enter it directly from your email tool, or estimate it: live flows times people entering each flow per month times emails per flow. Six flows with 1,000 entries each and 3 emails per flow is 18,000 emails.
Click rate
Clicks divided by emails delivered. If your tool shows click-to-open rate instead (clicks divided by opens), multiply it by your open rate first.
Conversion rate of clickers
Orders divided by clicks. Cart flows convert far better than win-back flows, so a blended number across all flows is what belongs here.
Average order value (AOV)
Revenue divided by orders. Use the AOV of orders from email if you have it, since it can differ from the store average.
Benchmark share
Two editable numbers multiplied together: the share of store revenue that email drives, times the share of email revenue that flows drive. The defaults are explained in the next section.
Two Dated Sources, Both Labeled, Both Editable
Flows drive nearly 41% of email revenue
Klaviyo's benchmark page says flows "generate nearly 41% of total email revenue from just 5.3% of sends," and gives 2026 good flow rates of 32.2% open and 5.58% click (top 10%: 45.8% and 10.48%). It draws on over 183,000 Klaviyo customers. The page's metadata shows it was published January 23, 2026 and updated September 24, 2026. Source: Klaviyo, 2026 Email Marketing Benchmarks by Industry, checked Oct 22, 2026.
Email drives 30% to 40% of store revenue at flow-led brands
Eightx, a fractional CFO firm, wrote on June 27, 2026 that brands running email as a retention system with deep flows average 30% to 40% of total store revenue from email. It puts broadcast-led brands at 15% to 20%. It names no data source for those two ranges, so treat them as a published estimate. Source: Eightx, Klaviyo flow revenue contribution benchmarks, checked Oct 22, 2026.
What the benchmark is not
Klaviyo does not publish a flow share of total store revenue. The 12.3% default is our arithmetic on the two figures above (30% times 41%), not a number either source prints. If you run a broadcast-led program, 15% times 41% gives about 6.2%. Change either box to match the brands you compare yourself to.
The Default Numbers, Line by Line
An example with made-up list and store numbers, using the sourced default rates. It is the same math the calculator runs.
A $1,140 monthly gap is about $13,700 a year. That is the number to weigh against the cost of fixing it, whether you do the work yourself or hire it out. Klaviyo's page says its top 10% of flows reach revenue per recipient as high as $7.79, so the ceiling is far above this example. The usual fixes are more volume (a missing browse or post-purchase flow), better clicks (offer and creative), or better conversion (the landing page). Our ecommerce email flows guide covers which flows to build first.
When This Calculator Is the Wrong Tool, and When Not to Pay for Help
Your list is under a few thousand people
Flow revenue scales with traffic. At a small list the gap is a few hundred dollars, and growing the list matters more than tuning flows. Build the welcome and cart flows yourself first.
Most of your sales are on Amazon
Amazon does not give you buyer emails, so store revenue from Amazon cannot flow through your email tool. Enter only the revenue your list can reach.
You are already above the benchmark
If the gap is negative, flows are not your bottleneck. Spend on traffic, product or campaigns instead, and do not pay anyone, us included, to rebuild flows that work.
Your list is not making money at all
Start with deliverability and list health before flows. Our guide on why an email list is not making money walks the checks in order.
About the Author
Ian Smith
Founder, Evolve Media Agency
Ian has run Evolve Media Agency since 2017 and has spent more than a decade in ecommerce, building and selling his own brands and producing listing content, video and ads for Amazon, Shopify and TikTok Shop brands. He writes every page on this site himself and the prices quoted for Evolve are the prices you pay.
Email Flow Revenue Questions
How much revenue should email flows produce?
How do I calculate expected flow revenue?
What is a good flow click rate in 2026?
Why does the calculator ignore open rate?
What if I do not know my monthly flow sends?
Why is my Klaviyo flow revenue higher than this estimate?
Should I include Amazon sales in store revenue?
What does Evolve charge for email marketing?
Find Out What Your Flows Are Leaving on the Table
Book a free 30-minute call. Bring the gap this calculator shows, and we will tell you which flows are missing, which are underperforming, and whether the fix is worth paying for or something you can do yourself.