Klaviyo POS Integration: How Omni Lightning Connects In-Store Data for Better Email and SMS Marketing
Most companies who use Klaviyo can’t connect it directly to their POS system. That means you can’t sync new emails from in-store purchases, track in-store sales from campaigns, or fully leverage flows and segments based on what customers actually buy.
At Omni Digital Group, we created Omni Lightning — a bridge that connects your Klaviyo account directly to your POS system.
With Omni Lightning, you can finally:
Sync in-store customer data automatically into Klaviyo
Track in-store sales from email and SMS campaigns
Segment audiences based on real purchase behavior — not just online data
Currently, Omni Lightning integrates with 15+ POS systems, including Lightspeed, Heartland, RICS, Retail Pro, Imagine, The EDGE, and Storis — and we can even build custom integrations for unique or proprietary systems.
In this article, we’ll show you exactly what we mean when we say Omni Lightning “connects Klaviyo and your POS.” We’ll break it down into three key claims we make — and prove each one.
Claim #1: Omni Lightning Makes Segmentation in Klaviyo Smarter and Easier
The problem:
Before Omni Lightning, most retailers had to manually upload customer data into Klaviyo. This meant:
Static lists that never updated in real time
Slow campaign building
No in-store purchase data in Klaviyo
The solution:
Omni Lightning syncs directly with your POS system, letting you use live, dynamic segments inside Klaviyo.
Example: Let’s say you want to send an email only to customers who bought your top-selling brand in-store — like Brooks running shoes. With Omni Lightning, you can pull that segment instantly.
Dynamic segment in Klaviyo created with Omni Lightning using in-store data
You’ll see exactly how many customers match that criteria — 1,239 people who have purchased Brooks and are opted into SMS.
Now, imagine sending a text or email only to those customers. Your open rates, CTR, and ROI instantly improve because the message is relevant and personal.
The takeaway: Omni Lightning turns your in-store purchase data into real-time Klaviyo segments — no manual uploads, no delays, just more personalized targeting.
You can segment by:
Brand
SKU
Store location
Purchase frequency
Total spent
Last visit date
This means you can finally personalize messages based on in-store behavior — something Klaviyo alone can’t do unless you use Shopify, WooCommerce, or BigCommerce.
Claim #2: Omni Lightning Tracks In-Store Sales from Klaviyo Email and SMS Campaigns
The problem:
Most retailers have no way to see if their Klaviyo campaigns actually drive in-store revenue.
The solution:
Omni Lightning automatically tracks in-store sales that happen after someone opens or clicks an email or SMS message — and attributes that revenue back to the specific campaign.
Here’s how it works:
For Email:
When a customer opens or clicks a Klaviyo email, a 28-day attribution window starts.
If they visit your store and make a purchase within that period, the sale is automatically attributed to that email campaign.
If they open another email, the 28-day clock restarts, giving you accurate attribution for each send.
For SMS:
SMS tracking starts when a customer clicks a link in your text.
If they make an in-store purchase within 28 days of that click, the sale is attributed to that specific SMS campaign.
Inside Klaviyo, you can see:
The in-store revenue generated from each campaign
What items were bought
When the purchase happened
Klaviyo customer profile displaying in-store purchases and campaign attribution
The takeaway: You’ll finally see the full picture — which emails or texts bring people back to your store and what they buy when they get there.
Claim #3: Omni Lightning Automatically Syncs Your POS Data with Klaviyo Every 24 Hours
The problem:
Retailers waste hours manually uploading new customer data from their POS into Klaviyo — every week or month.
The solution:
Omni Lightning syncs new customers, purchases, and updates from your POS system into Klaviyo automatically every 24 hours.
That means:
No more manual uploads
No more outdated data
Always accurate audience lists
Real-world impact: Retailers save dozens of hours per quarter and avoid human error that can hurt deliverability and list quality.
The takeaway: Every 24 hours, your Klaviyo account refreshes with the newest in-store customer data — all automatically.
Why This Integration Matters
When your POS and Klaviyo systems finally talk to each other, everything changes:
Your email and SMS marketing gets more personal
You can prove the ROI of your Klaviyo investment
You can see all your customers’ online and in-store purchases in one place
With Omni Lightning, you get a 360° view of your retail data — connecting your marketing and sales in one seamless loop.
Conclusion: The Claim We Make — Proven.
If you’re a Klaviyo user running a retail business, Omni Lightning helps you finally bridge the gap between your in-store POS and your marketing platform.
You’ll:
Segment smarter
Track real in-store revenue
Sync data automatically
All while saving time and driving more repeat customers into your store.
Ready to see Omni Lightning in action?
Schedule a demo with Omni Digital Group and see how we help Klaviyo retailers unlock the full potential of their data.