Automate PayPal & Klaviyo

Stop paying for mismatched spreadsheets. Sync data between PayPal 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 ["PayPal"]
        T1(["Billing Plan Webhooks"])
    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 PayPal transactions occur, the order details such as item descriptions, quantities, and customer emails are sent via webhooks. If these webhooks are not integrated with Klaviyo, marketing teams face a situation where they have to manually input customer purchase data into Klaviyo for targeted email campaigns. This manual entry not only consumes valuable time but also introduces the risk of human error, such as incorrect email addresses or item descriptions, leading to ineffective marketing efforts and lost revenue opportunities.

Top Ways to Automate PayPal & Klaviyo

Automated Purchase Confirmation Emails: Instantly send personalized purchase confirmation emails via Klaviyo whenever a transaction is completed through PayPal, enhancing customer experience and reducing manual follow-ups.
Abandoned Cart Recovery: Automatically trigger targeted email campaigns to recover abandoned carts by leveraging PayPal transaction data, ensuring timely reminders that drive conversions.
Customer Segmentation and Targeting: Seamlessly sync customer purchase history from PayPal to Klaviyo, allowing for advanced segmentation and tailored marketing campaigns based on buying behavior and preferences.

How to Build the PayPal → Klaviyo Sync

Set up a webhook in PayPal to listen for the 'PAYMENT.SALE.COMPLETED' event. This webhook will trigger when a payment is successfully processed.
Configure the webhook to send a payload containing the transaction details, including 'transaction_id', 'amount', 'currency', 'payer_email', and 'items'.
In your application, create an endpoint to receive the webhook data from PayPal. Ensure this endpoint extracts the necessary fields from the incoming JSON payload.
Map the extracted data to Klaviyo's API format. For example, use 'payer_email' for the email address and construct a JSON object that includes 'data': {'type': 'list-member', 'attributes': {'email': payer_email, 'properties': {'transaction_id': transaction_id, 'amount': amount, 'currency': currency, 'items': items}}}.
POST this JSON object to Klaviyo's API endpoint at 'https://a.klaviyo.com/api/v1/list/YOUR_LIST_ID/members', including your API key in the headers for authentication.
Test the entire flow by completing a transaction in PayPal and verifying that the data appears correctly in Klaviyo.

Developer Warnings & API Gotchas

Ensure that the 'items' array from PayPal is formatted correctly when sending to Klaviyo; mismatches in expected data structure can lead to failed inserts.
PayPal may send multiple items in a single transaction; ensure your logic accounts for this and aggregates item details appropriately before sending to Klaviyo.
Be cautious with the 'currency' field; if Klaviyo is set up to handle only specific currencies, you may need to implement a currency conversion logic before inserting data.

Supported API Operations

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

When this happens in PayPal... Billing Plan Webhooks

Do this in Klaviyo Add Profile to List
When this happens in PayPal... Billing Subscription Webhooks

Do this in Klaviyo Add Tag to List
When this happens in PayPal... Canceled Recurring Payment Webhooks

Do this in Klaviyo Add Tag to Segment
When this happens in PayPal... Failed Payment Webhooks

Do this in Klaviyo Create Event
When this happens in PayPal... List Invoices

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 PayPal to Klaviyo. Tell me about your current setup—what's the specific bottleneck you're trying to automate right now?