Klaviyo vs Omnisend for ecommerce email: what you are choosing between
One is a customer database that sends email. The other is an email tool that got good at ecommerce. Choose on that.
Both send email, both do SMS, both plug into Shopify in an afternoon. The difference turns up in month nine, when you want to send something to the people who bought one particular thing and haven't been back since.
One is a database that sends, the other is a sender with fields
Think about what each of them is underneath. Omnisend is a good email tool that's been fitted with ecommerce features. Klaviyo is a customer database that happens to send email, and everything it does well follows from that.
So the honest comparison isn't feature by feature. It's a question about how complicated your customer base is going to get, and how soon.
The trap is that both look identical for six months. You build a welcome series, a cart recovery and a monthly campaign, and either platform does all three competently. The difference shows up later, as a question you want to ask your list and can't.
We're a Klaviyo partner, and that belongs at the top
We're an official Klaviyo partner. That's a commercial relationship, we benefit from brands choosing Klaviyo, and it belongs at the top of a page like this, not in the footer.
So here's the part that costs us something. If you're sending a newsletter and three flows to a list of a few thousand, Omnisend will do it. It'll cost you less, and you won't miss what you never used. Nobody needs a data platform to send a monthly email.
What each one is genuinely better at
| Klaviyo | Omnisend | |
|---|---|---|
| The data model | Any event or property is queryable in a segment | Contact fields and a fixed set of ecommerce events |
| Automation | Conditional splits, trigger filters, flow filters, webhooks | A clean builder that covers the common journeys well |
| Channels | Email, SMS and push, each billed separately | Email, SMS and push together in one plan |
| Forms | Serviceable, and better than it was | Stronger out of the box, including the spin to win formats |
| Who else knows it | Most Shopify agencies and freelancers | A smaller pool, so more of it falls to you |
Read that as a list of trade-offs, not a scoreboard. A brand with one product and one buying occasion may never need the first row. It'll feel the third one every month.
The difference arrives later than the demo does
Both platforms demo well, because a welcome series and an abandoned cart look the same in either. The gap opens when the logic stops being a straight line.
That's a stack of five triggers, and the value is in what sits between them. Who gets filtered out, who gets held back, who gets skipped because they bought yesterday. If you're building the the flow library properly, the conditions matter more than the editor does.
Both bill you for people, so both punish a dirty list
Prices change, so there are none on this page. The shape of the bill matters more anyway, and it's the same shape on both. You pay for the people you're able to send to, every month, whether you send to them or not.
- A list full of addresses that never open is a bill you pay twice, once to the platform and once in deliverability
- SMS is charged on top in Klaviyo and bundled in Omnisend, which is a real saving until the volume gets serious
- Suppressed profiles usually stop counting, so sunsetting properly is a cost decision as well as an inbox one
- The cheaper platform stops being cheaper the day you hire somebody to work around what it won't do
Most brands find the price difference matters at the start and stops mattering once email is a real revenue line. Plan for that moment, not the one you're in.
The export is easy, the rebuild isn't
Everyone imagines the migration is the profiles. It isn't. Profiles and consent move fine, and Shopify hands the new platform your order history the moment you connect it, so segmentation doesn't start from nothing.
- Flows, segments and templates are rebuilt by hand, whichever direction you go
- Email engagement history doesn't travel, so an engaged segment has to be earned again
- Forms, embeds and any custom event tracking need republishing on the site
- Sending authentication is set up again on the new platform before the first campaign goes out
The version of this we would say on a call
- Small list, simple catalogue, one person doing the marketing: Omnisend, and spend the difference on the offer
- Growing fast, several product lines, a real repeat purchase pattern: Klaviyo, and build the segmentation early
- Already on one of them and frustrated: fix the flows before you blame the platform, because most of what people migrate to escape is a build problem
The worst outcome is a migration that swaps a half-built programme on one platform for a half-built programme on another. We've taken over accounts that had done it twice.
Theo Tziapouras
Founder and strategy at Engage Commerce, the ecommerce agency for 7 and 8 figure DTC brands.
FAQs
Is Klaviyo worth it for a small Shopify store?
Often not yet. If your list is small, your catalogue is simple and nobody has time to build segments, the cheaper platform will do the job and you won't notice what's missing. The case for Klaviyo starts when your customers stop behaving like one group.
Can I move from Omnisend to Klaviyo without losing my list?
Yes. Profiles, consent status and unsubscribes export and import cleanly, and Shopify supplies the order history to the new platform when you connect it. What doesn't move is engagement history, flows and templates, so budget for a rebuild, not a transfer.
Which one is better for SMS?
Omnisend bundles it, Klaviyo bills it separately and gives you more control over how it interacts with email inside a flow. For a brand sending occasional texts the bundle usually wins. For a brand running SMS as a real channel, the control is worth paying for.
Does Omnisend integrate with Shopify as well as Klaviyo does?
Both install in minutes and both sync orders, products and customers, so day one feels much the same. The difference is depth. Klaviyo keeps more of the store's event history in a form you can query later, so a segment built on what somebody browsed two months ago is straightforward in one and awkward in the other.
Do I need an agency for either of them?
No, and plenty of brands run both well on their own. What an agency buys you is the build being finished instead of started, and somebody noticing the month a flow quietly stops sending. That's a use of money, not a requirement.
The platform is the smallest decision here
A brand with good segmentation and eight working flows will out-earn a brand with better software and three, every quarter, without exception in anything we've run. Pick the tool your catalogue and your list actually need, then spend the argument you saved on what you're going to send. The case studies are all accounts where the build did the work, not the logo on the login screen.
Platforms compared
What you give up either way, and what a migration actually changes.
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Email vs SMS marketing ecommerce: which channel to add next
Only one of these three charges you by the message. That one fact decides almost everything about how you use it.
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A Mailchimp to Klaviyo migration: what breaks, and what to check first
The data moves in an afternoon. Consent, reputation and every automation you had running are the parts that take a month.
Read itWould you rather this was just handled?
Bring your Klaviyo account and the thing annoying you most. We will tell you what we would fix first, on the call, before you spend anything.
Book a call with our founder.
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