NetSuite Klaviyo Integration: Sync Customer and Order Data Automatically

Klaviyo is the email and SMS platform of choice for most eCommerce brands. NetSuite is where your orders, customers, and revenue data actually live. Between them is a gap that costs you marketing precision.

If your Klaviyo segments are based on purchase data from Shopify or BigCommerce but your actual source of truth for customer records is NetSuite, your email lists are incomplete. High-value B2B customers who order offline, wholesale orders processed directly in NetSuite, and phone orders never appear in Klaviyo, meaning your best customers are not in your email flows.

Looking for the product rather than the guide? Dominate's Klaviyo integration for NetSuite-connected stores syncs every storefront buyer, consent change, and order event into Klaviyo from the same connector that runs your NetSuite sync. The rest of this post explains the options and what data should flow.

Why NetSuite and Klaviyo Do Not Talk by Default

Klaviyo is designed to pull data from eCommerce platforms like Shopify, BigCommerce, and WooCommerce via native integrations. It was not designed to pull from NetSuite directly.

If all of your orders flow through your eCommerce platform, Klaviyo's native integration gives you reasonable coverage. But if any significant revenue, offline B2B sales, wholesale accounts, phone orders, EDI orders, lives only in NetSuite, Klaviyo never sees it.

What a NetSuite Klaviyo Integration Does

A NetSuite to Klaviyo integration pulls customer and order data from NetSuite and pushes it to Klaviyo as profile properties and events. This enables:

Complete customer profiles. A customer who buys wholesale offline and retail online appears as one unified profile in Klaviyo with their full purchase history.

Revenue-based segmentation. Segment by lifetime value calculated from NetSuite, not just eCommerce platform data. Identify your top 100 customers by total revenue, including offline orders.

Triggered flows from NetSuite events. A NetSuite fulfillment triggers a shipping notification. A NetSuite invoice triggers a payment reminder. A NetSuite renewal triggers a re-order email.

Suppression lists from NetSuite. B2B accounts with a dedicated account manager should not receive generic promotional emails. NetSuite customer tags or types can suppress those contacts from standard flows.

Dominate covers the storefront side today; NetSuite-only fields and offline orders need one of the NetSuite-side options below.

What Data Should Flow from NetSuite to Klaviyo

Customer profile properties: Customer name, company, NetSuite customer ID, customer type (B2C, B2B, wholesale), payment terms, credit limit, assigned sales rep, NetSuite class or department.

Order events: Order placed, order amount, items ordered, fulfillment status, tracking number, return and refund events.

Custom properties: Subscription renewal date, contract value, PO number, last order date, average order value from NetSuite data.

How to Build a NetSuite Klaviyo Integration

Option 1: Dominate's NetSuite Klaviyo integration (eCommerce stores). Dominate sends every storefront buyer, including the 40 to 60% who check out as guests, plus consent changes and Placed, Fulfilled, and Refunded Order events to Klaviyo from the same connector that runs your NetSuite sync, with a historical import so segments work on day one. Nothing Klaviyo-specific to install on the store.

Option 2: Klaviyo's API and custom middleware. Klaviyo has an API that accepts profile and event data. You can build custom middleware that reads from NetSuite's SuiteScript or REST APIs and pushes to Klaviyo. Development cost: $10,000 to $40,000.

Option 3: Prebuilt NetSuite-side connector or iPaaS. NetSuite-side tools, such as SuiteApp connectors and iPaaS platforms, read customer and order records inside NetSuite and push them to Klaviyo, so they can carry offline and B2B orders. Celigo and Boomi can build this flow too, but they carry an iPaaS platform fee (typically $800 to $2,500/month) that is hard to justify for this single use case unless you already run one. Zapier connects Klaviyo and NetSuite trigger by trigger, which suits low volume.

Option 4: eCommerce connector plus Klaviyo's native integration. If your eCommerce platform is connected to both NetSuite (via a connector like Dominate) and Klaviyo (via its native integration), most customer data flows automatically. The gap to fill is offline and B2B orders that originate in NetSuite but never touch your eCommerce platform.

Klaviyo NetSuite Integration Options Compared

Pick by where the order starts. Storefront orders, including guest checkouts, fit Dominate. Orders keyed directly into NetSuite need a NetSuite-side tool.

The Bottom Line

If every order comes through one storefront and every buyer creates an account, Klaviyo's native platform integration covers most of it. In practice, 40 to 60% of orders are guest checkouts that the native integration never turns into profiles, and any offline, wholesale, or direct B2B revenue in NetSuite is invisible to Klaviyo. A connector-level sync closes both gaps.

The Foundation: Get NetSuite and Your eCommerce Platform Synced First

The most practical path to Klaviyo getting complete data is: (1) connect your eCommerce platform to NetSuite with a purpose-built connector, (2) connect Klaviyo to your eCommerce platform via its native integration, (3) handle the offline/B2B gap with a direct NetSuite to Klaviyo sync.

Steps 1 and 2 are straightforward. Dominate handles Step 1: connecting Shopify, Magento, Adobe Commerce, BigCommerce, or WooCommerce to NetSuite. If you run Magento 2, the Magento NetSuite integration is the same real-time sync engine that feeds this Klaviyo pipeline. Klaviyo's native integration handles Step 2 automatically once your platform is the source of truth for all orders. For Step 3, the right approach depends on how much revenue flows through NetSuite without touching your storefront.

For most eCommerce brands, Steps 1 and 2 cover 80 to 95% of customer data. The direct NetSuite to Klaviyo sync (Step 3) is only necessary if you have significant offline B2B revenue.

Dominate's Klaviyo sync sends profiles, guest buyers, consent, and Placed, Fulfilled, and Refunded Order events to Klaviyo from the same Dominate connector that runs your NetSuite sync, with a historical import so your account is populated on day one. Get started in minutes.

compare NetSuite eCommerce connectors for your eCommerce platform, or contact our team to discuss your specific data flow setup.