Automate Notion & Klaviyo

Stop paying for mismatched spreadsheets. Sync data between Notion 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 ["Notion"]
        T1(["Data Source File Properties"])
    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 Notion and Klaviyo operate independently, marketing teams often face the challenge of manually transferring subscriber data from Notion to Klaviyo. For instance, when a new lead is added to a Notion database, the marketing team must manually input that lead's details into Klaviyo, risking human error such as typos or missing fields. This not only wastes valuable time but can also lead to missed marketing opportunities if leads are not promptly added to campaigns.

Top Ways to Automate Notion & Klaviyo

Automated Customer Segmentation: Sync customer data from Notion to Klaviyo automatically, allowing for precise segmentation based on project status, engagement level, or other criteria, ensuring targeted marketing efforts.
Real-Time Campaign Updates: Automatically update Klaviyo campaigns with the latest project milestones and customer interactions recorded in Notion, keeping your audience informed and engaged without manual intervention.
Performance Tracking and Reporting: Generate comprehensive reports by integrating performance metrics from Klaviyo into Notion, enabling teams to analyze campaign effectiveness and make data-driven adjustments swiftly.

How to Build the Notion → Klaviyo Sync

Set up a Webhook in Notion to trigger on new database entries. Configure the webhook to listen for the 'database.item.created' event.
In the Webhook payload, extract the relevant subscriber information, such as name, email, and tags.
Use the Klaviyo REST API endpoint POST /api/v1/people/ to insert the new subscriber. Ensure the payload includes the extracted data in the format: { "data": { "type": "person", "attributes": { "email": "[email]", "first_name": "[name]", "tags": ["[tags]"] } } }}.
Test the integration by adding a new entry in the Notion database and verifying that it appears in Klaviyo.

Developer Warnings & API Gotchas

Ensure that the email field is validated in Notion to prevent invalid email formats from being sent to Klaviyo, as Klaviyo will reject any invalid entries.
Be cautious with the tags array; if Notion contains multiple tags as a single string, you will need to split them into an array format before sending to Klaviyo.
Monitor the webhook response from Notion to handle any potential errors gracefully, as failure to do so could lead to data loss if the integration is not retried correctly.

Supported API Operations

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

When this happens in Notion... Data Source File Properties

Do this in Klaviyo Add Profile to List
When this happens in Notion... Data Source Properties

Do this in Klaviyo Add Tag to List
When this happens in Notion... Data Source Templates

Do this in Klaviyo Add Tag to Segment
When this happens in Notion... Fetch Custom Actions

Do this in Klaviyo Create Event
When this happens in Notion... List Data Source Items

Do this in Klaviyo Create List

SyncMatrix Experts

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