Omnisend is cheaper. It is cheaper at 500 contacts, cheaper at 10,000, and the gap widens as your list grows. Every comparison post arrives there within two paragraphs and none of them are wrong about it. The question worth asking is what that saving is being weighed against, because on most stores it turns out to be the smallest number on the page.
How much cheaper is Omnisend, really?
Take the most favourable version of the claim, which is Omnisend's own published comparison. At 50,000 contacts it puts Klaviyo at around $720 a month against Omnisend's $413. Call it $300 a month and grant the figure without arguing, since the company selling against Klaviyo has every reason to have chosen the tier that flatters it.
At the sizes most stores are actually at, the gap is narrower. A few dollars a month at 500 contacts. Twenty or so at 10,000. That is real money, and it is also the kind of real money that sits below the threshold where anyone reorganises a business.
Where does the cheaper one actually cost you?
In the work you do not do after you have bought it.
We rebuilt the email for a food DTC brand whose flows were earning €517 a month. By the end of the work those same flows were at €16.9K and monthly email revenue was up 58.5%. None of that came from the platform. It came from a handful of automations that had either not existed or had been pointed at people who were never going to buy again.
Put the two numbers next to each other. The platform decision is worth a few hundred a month at a list size most stores never reach. The flow decision was worth sixteen thousand. Choosing on price is not wrong because the price is wrong. It is wrong because it puts the smallest lever at the front of the decision and spends the attention the big one needed.
What is the real product difference?
Narrower than Klaviyo's marketing suggests and wider than Omnisend's does.
Both build live segments out of store behaviour, so both escape the old problem of mailing a list that cannot grow. Klaviyo segments over the whole event stream your store sends it, including custom events and properties from anything you can point an API at, and layers predicted fields like churn risk on top. Omnisend segments over orders, email and SMS activity, tags and custom properties, which covers most of what a store under real volume ever asks for.
The honest split is this. If the segments you want are the five worth building before any clever ones, either platform holds them without complaint. If you want to mail people on an event your store fires that nobody else's does, that is the point where Klaviyo stops being a more expensive version of the same thing.
What does each one bill you for?
Different nouns, and the difference quietly shapes what you do with your list. Klaviyo bills on active profiles, a narrower and more slippery number than everyone sitting in the account; we wrote that trap up separately. Omnisend bills on contacts and does not charge for the ones who have unsubscribed.
So Klaviyo charges you for hoarding. That is usually an argument for cleaning the list rather than for leaving, and if cleaning it leaves you with almost nobody, that is its own diagnosis.
Is Omnisend ever the right answer?
Often. A store with steady order volume, someone who will actually build the flows, a segmentation need that stops at what customers have bought and opened, and a use for web push will be fine on Omnisend and will pay less for it. Every feature comes with every paid plan, which is the opposite of Klaviyo's habit of putting the thing you need one tier above the thing you bought.
Klaviyo earns its premium in two places. The first is the event depth above. The second is duller and rarely mentioned: the agencies and the integrations are built around it, so help is cheaper to find and quicker to brief. If you intend to hire this work out rather than do it yourself, the deeper bench is worth something no feature table can show you.
Should you switch if email is flat?
Not yet, and not because switching is hard. A flat number is almost never caused by the invoice. Work out which flows exist, who each one is aimed at, and whether that audience can still grow, because most of the money sits in a few automations that run without anyone watching them.
If that work is done and the number is still flat, move for the price. Take the saving, and you will still have the same flows, which by then will be the good ones.
