Automating contact enrichment across Klaviyo, Shopify, and Google Sheets

The challenge: fragmented customer data

Most e-commerce businesses operate with data spread across multiple platforms—Shopify for transactions, Klaviyo for email marketing, and often a spreadsheet serving as the operational backbone. The problem: these systems don't natively share identifiers, making it difficult to build a complete customer profile.

Without a unified view, teams face:

•Manual lookups across platforms to understand a single customer

•Inconsistent data leading to poorly targeted campaigns

•Missed opportunities for personalization at scale

The solution: automated ID synchronization

This n8n workflow automatically enriches a Google Sheet with Klaviyo Profile IDs, creating a central reference that bridges all systems.

How it works

1.Scheduled Trigger: The workflow runs every 30 minutes

2.Sheet Retrieval: Pulls all rows from the master Google Sheet

3.Smart Filtering: Identifies contacts that have a source but lack a Klaviyo Profile ID

4.API Lookup: Queries the Klaviyo API using the contact's email address

5.Sheet Update: Writes the Klaviyo Profile ID back to the corresponding row

The loop processes contacts one at a time with a deliberate pause between requests, respecting API rate limits while ensuring complete coverage.

Business impact

Before automation

Manual profile lookups across platforms
Incomplete customer context
Generic marketing campaigns
Hours spent on data reconciliation

After automation

Single reference sheet with all IDs
Unified view linking Shopify and Klaviyo data
Precise segmentation based on complete profiles
Fully automated, hands-off synchronization

Why this matters for e-commerce

Complete customer profiles

When Shopify purchase data meets Klaviyo engagement data, you understand not just what customers bought, but how they interact with your brand.

Sales team precision

Equip your sales team with complete customer context before every interaction. Combined with lead scoring based on engagement and purchase history, reps focus on the highest-potential opportunities.

Operational efficiency

Teams stop wasting time on manual data lookups. The enriched sheet becomes the single source of truth for customer operations.

Scalable foundation

As contact volume grows, the automation scales automatically. No additional manual effort required.

Getting started

The implementation requires API access to Klaviyo, a Google Sheet structured with email addresses and designated columns for profile IDs, and n8n for orchestration. Once configured, the workflow runs continuously in the background, keeping your customer data synchronized across all platforms.

The technical setup is straightforward. The operational clarity it provides is substantial.