Klaviyo's pricing scales with the number of profiles in your account, not just the ones you actively email, so a store that accumulates browsers, one-time buyers, and long-dormant customers can end up paying for a database far larger than its active audience. Omnisend's pricing curve is gentler at the same profile counts, which is the practical reason most stores start looking elsewhere.
The catch is that Klaviyo's segmentation and predictive analytics — predicted lifetime value, churn risk, product-level affinity scoring — are genuinely more advanced than anything Omnisend offers. If your team actively used those features to drive campaigns, the move costs you real capability, not just a rebuild exercise. If you never touched them, you're paying for depth you don't use.
This guide covers the practical sequence: reconnecting your store so data flows correctly from day one, rebuilding your core revenue flows in the right order, carrying over SMS and popups, and — the step people skip and regret —ss verifying that revenue attribution in Omnisend actually lines up with what Klaviyo was reporting before you switch off the old account.
How long this takes
4–6 hours
Most of that time goes into rebuilding automations and repointing forms, not the import itself.
Why switch from Klaviyo to Omnisend?
Switch if…
- Your Klaviyo bill keeps climbing as your profile count grows, even when active buyers aren’t growing at the same rate.
- You want SMS, email, and on-site popups managed from a single platform rather than stitching Klaviyo to a separate SMS tool.
- Your flow needs are the standard ecommerce set — welcome, cart, browse, post-purchase, winback — and don’t require Klaviyo’s deepest segmentation.
- You want simpler, more predictable pricing as your list grows past the tens of thousands of profiles.
- You’re a smaller team that finds Omnisend’s flatter learning curve easier to manage without a dedicated lifecycle marketer.
Stay put if…
- You actively rely on Klaviyo’s predicted CLV, churn prediction, or product-affinity segments to drive campaigns.
- Your flows use complex multi-branch logic that Omnisend’s flow builder doesn’t replicate as deeply.
- You’re integrated with a reporting or data-warehouse stack built specifically around Klaviyo’s API and event data.
Klaviyo vs Omnisend: the key differences
| What changes | Klaviyo | Omnisend |
|---|---|---|
| Pricing scaling | Scales with total profiles stored | Scales more gently at the same profile counts |
| Segmentation depth | Predicted CLV, churn risk, product affinity | Standard behavioural and purchase segments |
| Predictive analytics | Built in and mature | Not available |
| SMS | Separate but integrated | Native, same account and pricing |
| Popups / forms | Native, flexible targeting | Native, simpler targeting rules |
| Flow builder | Deep conditional branching | Simpler, template-driven branching |
| Reporting | Granular, custom attribution windows | Straightforward revenue-per-campaign and per-flow |
| Learning curve | Steeper, more configuration | Flatter, faster to get running |
Before you switch, have this ready
- Admin access to both Klaviyo and Omnisend, plus your ecommerce platform (Shopify, WooCommerce, BigCommerce).
- Screenshots of every active Klaviyo flow, including triggers, delays, and split logic.
- A note of your current revenue-per-recipient for each core flow, taken from Klaviyo’s flow reports, to compare against later.
- A list of every popup, signup form, and SMS opt-in point currently live on your site.
- Your SMS compliance records (opt-in timestamps and consent language) to carry across correctly.
- A week in the calendar to run both platforms in parallel before fully cutting over.
Step-by-step: Klaviyo to Omnisend
Step 1: Reconnect your store to Omnisend
Go to Omnisend’s Store settings and connect Shopify, WooCommerce, BigCommerce, or whichever platform you run. This has to happen first because every flow you build afterwards depends on product and order events being available.
Confirm historical order data has synced, not just new orders going forward — this matters for segments based on past purchase behaviour and for post-purchase flows that reference order history.
Check that your product catalogue synced correctly, including images and prices, since browse abandonment and cart recovery emails pull this data directly.
Screenshot
Omnisend Store connection settings screen
Step 2: Export and suppress your Klaviyo profile list
Export your Klaviyo profiles from Analytics → Segments & Lists, making sure email and SMS consent fields are included in the export — you cannot legally email or text someone in Omnisend without carrying that consent record across.
Import into Omnisend via Audience → Import contacts, mapping consent fields precisely rather than assuming everyone imported is opted in by default.
Suppress anyone who unsubscribed or was suppressed in Klaviyo before you send a single campaign from Omnisend — re-emailing a Klaviyo unsubscribe is the fastest way to trigger complaints on a new sending domain.
Screenshot
Omnisend Audience import mapping screen with consent fields
Step 3: Rebuild your welcome and cart abandonment flows
Start with the two flows that typically generate the most revenue: welcome series and cart abandonment. Go to Automation → Workflows and use Omnisend’s pre-built templates as a starting structure rather than building from a blank canvas.
Match your Klaviyo timing and discount logic as closely as Omnisend’s builder allows — delays, split tests, and discount code injection all exist but are configured differently, so don’t assume a straight copy will behave identically.
Rebuild the email content directly in Omnisend’s editor. Product blocks that pulled dynamically from Klaviyo’s catalogue need to be re-added using Omnisend’s product picker.
Screenshot
Omnisend cart abandonment workflow template
Step 4: Rebuild browse abandonment, post-purchase, and winback flows
Browse abandonment in Omnisend triggers off product page views synced from your store connection — confirm this event is firing before building the flow around it, since it depends entirely on the Step 1 store connection working correctly.
Post-purchase flows (review requests, replenishment reminders, cross-sell) rebuild the same way, referencing order and product data from the store sync. Winback flows targeting lapsed customers rely on your historical order sync being complete, which is why Step 1 mattered.
Test each flow with a real test order or test browsing session before enabling it live, and don’t enable all five flows simultaneously — stagger them so you can isolate any issue to a specific flow.
Screenshot
Omnisend automation list showing all core flows
Step 5: Move SMS opt-ins and on-site popups
Rebuild your on-site popups in Omnisend’s form builder, matching the targeting rules (exit intent, time delay, page-specific) you had in Klaviyo as closely as the builder allows.
For SMS, import your existing consent records with timestamps intact, and make sure your opt-in language on any new Omnisend-hosted forms matches what your customers originally agreed to — consent doesn’t transfer cleanly if the wording changes.
Test the full signup-to-first-message path yourself: submit the popup, confirm the welcome email or text arrives, and check the unsubscribe link works before turning it live to real traffic.
Screenshot
Omnisend popup and SMS signup form builder
Step 6: Repoint remaining integrations
Check apps like review platforms, loyalty programs, and helpdesk tools that may have a direct Klaviyo integration and switch them to their Omnisend equivalent.
If you use Zapier or Make for anything Klaviyo-specific, rebuild those scenarios with the Omnisend connector rather than assuming they’ll remap.
Leave Klaviyo’s tracking script or pixel in place for a short overlap period only if you need it for historical reporting continuity, then remove it once you’ve fully cut over.
Screenshot
List of connected third-party apps to repoint
Step 7: Verify revenue attribution matches before cutting over
Run both platforms in parallel for at least a week, with Omnisend’s flows live and Klaviyo’s either paused or running as a backstop, and compare revenue-per-recipient on your core flows against the baseline you noted in the checklist.
Attribution windows differ between platforms, so don’t panic at a small variance — check whether Omnisend is using last-click or a different window before assuming something is broken.
Once the numbers hold up for a full week, disable the equivalent Klaviyo flows one at a time rather than all at once, so any drop in revenue can be traced to a specific flow.
Screenshot
Omnisend flow report showing revenue per recipient
Integrations you need to update
Every one of these is a place contacts or data currently flow into Klaviyo. Work through the list before you stop watching the old account — a missed form is invisible until someone complains they never got your email.
| Integration | What to do |
|---|---|
| Shopify / WooCommerce / BigCommerce | Connect your store to Omnisend first — every flow depends on this syncing correctly. |
| On-site popups | Rebuild natively in Omnisend’s form builder rather than trying to keep Klaviyo-hosted forms live. |
| SMS opt-ins | Import consent records with timestamps and match your original opt-in language exactly. |
| Review platforms (Yotpo, Judge.me, etc.) | Switch the integration to Omnisend and confirm review request flows still trigger. |
| Loyalty and rewards apps | Reconnect to Omnisend if the app supports it, or rebuild the trigger logic manually. |
| Zapier / Make | Rebuild any Klaviyo-based scenario using the Omnisend connector. |
| Facebook / Google audiences | Reconnect custom audience syncing so ad retargeting doesn’t silently stop updating. |
| Helpdesk (Gorgias, Zendesk) | Update the customer data integration so support agents see current order and email history. |
Troubleshooting: common post-migration problems
Browse abandonment flow never triggers
The store connection isn’t syncing product page view events correctly. Recheck the store integration in Step 1 and confirm event tracking is active on your storefront.
Revenue-per-recipient looks much lower than Klaviyo reported
Check the attribution window Omnisend is using — it likely differs from Klaviyo’s default, and comparing unlike windows makes the drop look worse than it is.
SMS messages aren’t sending to imported contacts
Consent wasn’t mapped correctly on import. Confirm the SMS consent field shows as opted-in in Omnisend, not just the email consent field.
Post-purchase flow references missing order history
Historical order sync from your store wasn’t completed. Recheck Store settings and trigger a manual historical sync if the option is available.
Popup targeting doesn’t behave like it did in Klaviyo
Omnisend’s targeting rules are simpler; recreate the closest equivalent rather than expecting an exact match, and test across desktop and mobile separately.
Unsubscribed Klaviyo contacts received a new campaign
The suppression import was skipped or incomplete. Pause all sending, re-import the Klaviyo unsubscribe list, and confirm it applied before resuming.
Should you make the switch?
The migration itself is rarely the hard part — it is the automations you rebuild and the forms you forget. If the reasons in the "switch if" list above describe your situation, Omnisend is worth the afternoon. If you are only moving because you are frustrated with an interface, fix the emails first and keep the platform.
Read both sides before you commit: our Klaviyo review covers what you would be giving up, and our Omnisend review covers what you are buying, including current pricing and where it falls short. Every switch we document is listed on the migration guides hub.