Automate Stripe & Klaviyo

Stop paying for mismatched spreadsheets. Sync data between Stripe and Klaviyo in real-time, so you can manage your operations without the busywork.

Get This Workflow Built

Custom API Integration

Secure Data Transfer

Done-For-You Setup

How the Data Flows

graph LR
    subgraph Source ["Stripe"]
        T1(["Canceled Subscription"])
    end
    
    subgraph Middleware ["Enterprise Integration Core"]
        W[CRON API
Poller] --> V{Validation
& Auth}
        V -->|Fail| DLQ[Dead Letter
Queue]
        V -->|Pass| Map[Data Mapping
& Transformation]
        Map --> Retry[Rate Limiting
& Retries]
    end
    
    subgraph Target ["Klaviyo"]
        A1(["Add Profile to List"])
    end

    T1 -->|JSON Payload| W
    Retry -->|Authenticated API POST| A1

    style Source fill:transparent,stroke:#cbd5e1,stroke-dasharray: 5 5
    style Target fill:transparent,stroke:#cbd5e1,stroke-dasharray: 5 5
    style Middleware fill:#f8fafc,stroke:#94a3b8,stroke-width:2px
    style T1 fill:#3b82f6,stroke:#fff,stroke-width:2px,color:#fff
    style W fill:#1f2937,stroke:#fff,stroke-width:1px,color:#fff
    style V fill:#1f2937,stroke:#fff,stroke-width:1px,color:#fff
    style Map fill:#1f2937,stroke:#fff,stroke-width:1px,color:#fff
    style Retry fill:#1f2937,stroke:#fff,stroke-width:1px,color:#fff
    style DLQ fill:#ef4444,stroke:#fff,stroke-width:1px,color:#fff
    style A1 fill:#e11d48,stroke:#fff,stroke-width:2px,color:#fff

When Stripe and Klaviyo operate independently, the marketing team often misses critical customer engagement opportunities. For instance, if a new customer signs up via Stripe but is not automatically added to Klaviyo, the marketing team may fail to send welcome emails, resulting in lost potential revenue. Manual data entry becomes necessary, where team members must cross-reference Stripe's 'List all persons' endpoint with Klaviyo's existing contacts, wasting hours each week and increasing the risk of human error.

Top Ways to Automate Stripe & Klaviyo

Automated Customer Segmentation: Instantly segment customers based on their purchase history and behavior in Stripe, allowing Klaviyo to deliver personalized marketing campaigns that resonate with each audience segment.
Real-Time Transaction Notifications: Automatically trigger email notifications in Klaviyo whenever a transaction occurs in Stripe, ensuring customers receive timely updates about their purchases, enhancing their overall experience.
Post-Purchase Engagement Workflows: Create automated workflows that follow up with customers after a purchase, using data from Stripe to send targeted emails via Klaviyo, encouraging repeat business and fostering brand loyalty.

How to Build the Stripe → Klaviyo Sync

Set up a webhook in Stripe to listen for the 'List all persons' endpoint. This will allow you to capture new customer data as it comes in.
Extract relevant payload data such as customer email, name, and any other pertinent fields from the Stripe response.
Use the Klaviyo REST API to POST the extracted data to the appropriate endpoint for inserting new users. Specifically, target the '/api/v1/people/' endpoint.
Ensure that the POST request includes the necessary headers for authentication and the correct JSON structure for the Klaviyo API.
Test the integration thoroughly to confirm that new Stripe customers appear in Klaviyo without manual intervention.

Developer Warnings & API Gotchas

Be cautious with data types; Klaviyo requires specific formats for fields like phone numbers and dates, which may differ from Stripe's output.
Ensure that the mapping between Stripe's 'List all persons' and Klaviyo's user fields is accurate; missing or misaligned fields can lead to incomplete user profiles in Klaviyo.
Consider handling duplicate entries carefully; if a customer exists in Klaviyo already, the API will need to update rather than insert, which requires additional logic in your integration.

Supported API Operations

We leverage official, stable endpoints to ensure secure data transfer. No deprecated legacy routes.

When this happens in Stripe... Canceled Subscription

Do this in Klaviyo Add Profile to List
When this happens in Stripe... Checkout Session Completed

Do this in Klaviyo Add Tag to List
When this happens in Stripe... Create a billing meter event

Do this in Klaviyo Add Tag to Segment
When this happens in Stripe... Create a billing meter event adjustment

Do this in Klaviyo Create Event
When this happens in Stripe... Create a webhook endpoint

Do this in Klaviyo Create List

SyncMatrix Experts

Available for Hire

We are an AI-powered automation team. We build custom, reliable API workflows that eliminate manual data entry.

Speak with an Integration Architect

We build custom API workflows that don't hit rate limits.

I can see you're looking at mapping Stripe to Klaviyo. Tell me about your current setup—what's the specific bottleneck you're trying to automate right now?