How to Tell If Your Klaviyo Setup Is Working
Most brand owners can tell you how many emails they sent last month. Far fewer can tell you whether their Klaviyo setup is actually working.
Those are different questions. Activity is easy to see. Performance takes knowing which numbers matter and how to read them.
Here are the four numbers I look at first when I want to know if a Klaviyo account is pulling its weight, and what each one is telling you.
#1: Email revenue as a percentage of total revenue
This is the headline number. Of all the revenue your store makes, how much comes from email?
There's no single "right" percentage, because it shifts by category. Regulated products like CBD and alcohol tend to lean harder on email and run higher, because advertising through other marketing platforms is limited for them. A brand with wide-open paid channels might run lower and still be healthy.
What matters is the trend and the contribution. If email is a rounding error in your total revenue, the setup has room to grow, and the gap is usually in flows or segmentation, not in how many campaigns you're sending. This is the first number I check, because it tells you more about your email program's health than any open rate ever will.
#2: Welcome flow revenue per recipient
Revenue per recipient is exactly what it sounds like. Take the revenue a flow generated, divide by the number of people who went through it. It tells you what each subscriber is worth as they enter your world.
For the welcome flow, Klaviyo publishes a benchmark you can measure against. According to Klaviyo, the average welcome flow generates $2.65 per recipient, with the top 10% achieving a placed order rate of 10.53%. So $2.65 is roughly the middle of the pack. Comfortably above it means your welcome flow is doing real work. Well below it is a signal that the highest-intent moment you get with a subscriber is being left on the table.
One caveat Klaviyo notes, and it's a fair one: your product price point influences RPR, and it may not be an accurate benchmark if your prices deviate a lot from the average in your industry. A high-AOV brand should clear the average comfortably. A low-AOV brand might run under it and still be healthy. Read the number in the context of what you sell.
The welcome flow is the first impression of your entire retention system. If the revenue per recipient is sitting well under the Klaviyo average, that's often the highest-leverage fix in the whole account.
#3: Returning customer rate
This is the cleanest signal that your post-purchase stage is alive. What percentage of your customers come back and buy again?
The direction is what matters here. A rate that's climbing means your post-purchase flow and win-back flow are doing their job, turning one-time buyers into repeat ones. A rate that's flat or falling means you're acquiring customers and letting them slip away, and the retention layer either doesn't exist or isn't working.
This number is worth watching over time more than measuring against any one threshold, because what's healthy varies a lot by category and price point. Track your own and watch which way it moves as you build out the system.
#4: Sender reputation in Google Postmaster Tools
The first three numbers measure revenue. This one measures whether your emails are even reaching the inbox, which determines everything upstream.
Google Postmaster Tools gives you a domain reputation read. High reputation means you're landing in the inbox. A medium or low score means your list health is hurting your deliverability, and your revenue is taking the hit whether you can see it or not.
If this one is low, fix it before anything else. The best welcome flow in the world earns nothing if it's landing in spam.
Reading the four together
Run all four and you get a fast, honest picture.
If email is barely contributing, your welcome flow RPR is well under the Klaviyo average, your returning customer rate is sliding, and your sender reputation is low, you don't have a retention system working for you yet. You have flows that exist but aren't connected, or a list health problem dragging everything down, or both.
If they're mostly healthy with one weak spot, you know exactly where to focus. A low welcome flow RPR points you at the welcome flow. A falling returning customer rate points you at post-purchase and win-back. A low Postmaster score points you at list health and deliverability before anything else.
That's the value of measuring the right things. The numbers tell you where the work is, so you're not guessing.
When the numbers say it's time for help
Pulling these four yourself gives you a real read. Where it gets harder is knowing why a number is low and what specifically to do about it. A welcome flow revenue per recipient well under the Klaviyo average tells you there's a problem. It doesn't tell you whether the issue is the offer, the timing, the segmentation, or the copy.
That diagnosis is the paid audit work: a full read of your account against these numbers and a lot more, with a prioritized plan for what to fix and in what order. You leave with a written audit document and a 60-minute walkthrough.
If you want to talk through where your numbers land and whether an audit makes sense for where you are, book a call with me. Bring your account. We'll look together.
Email is a system, not a send.
— Alex