Automate Klaviyo & HubSpot

Stop paying for mismatched spreadsheets. Sync data between Klaviyo and HubSpot 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 ["Klaviyo"]
        T1(["Fetch Custom Actions"])
    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 ["HubSpot"]
        A1(["Add Contact 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 Klaviyo and HubSpot operate independently, marketing teams often face significant challenges in tracking customer engagement. For instance, if a customer interacts with a Klaviyo email but their details are not updated in HubSpot, the sales team may follow up with outdated information, leading to missed opportunities. This results in manual data entry where team members have to cross-reference lists, wasting hours each week just to ensure that contact details and engagement metrics are aligned.

Top Ways to Automate Klaviyo & HubSpot

Automated Lead Nurturing: Streamline your lead nurturing process by automatically syncing leads from HubSpot to Klaviyo, allowing for personalized email campaigns based on user behavior and engagement.
Real-Time Customer Insights: Gain a 360-degree view of your customers by integrating data from both platforms, enabling you to create targeted marketing strategies that resonate with your audience.
Enhanced Reporting and Analytics: Consolidate reporting from Klaviyo and HubSpot to track performance metrics in one place, allowing for data-driven decisions that enhance your marketing ROI.

How to Build the Klaviyo → HubSpot Sync

In Klaviyo, navigate to the 'Webhooks' section and create a new webhook. Set the trigger to 'Standard Webhooks' for the event you want to capture, such as 'Email Opened'.
Configure the webhook to send a POST request to your server endpoint, e.g., https://your-server.com/klaviyo-webhook. Ensure the payload includes the necessary customer data such as 'email', 'first_name', and 'last_name'.
On your server, set up an endpoint to receive the webhook data. Extract the relevant fields from the payload.
Use the HubSpot API to insert the data into HubSpot. Make a POST request to the HubSpot endpoint https://api.hubapi.com/contacts/v1/contact/, including the extracted data in the request body as JSON.
Ensure to include your HubSpot API key in the request header for authentication.

Developer Warnings & API Gotchas

Be aware that Klaviyo sends data in a specific format; ensure that your server correctly maps fields like 'first_name' and 'last_name' to HubSpot's expected input structure.
If a contact already exists in HubSpot, the API will return an error if you attempt to create a new contact with the same email. Implement logic to check for existing contacts before making the POST request.
Make sure to handle the case where Klaviyo sends an event for a contact that has opted out of communications; this might require additional checks before inserting data into HubSpot.

Supported API Operations

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

When this happens in Klaviyo... Fetch Custom Actions

Do this in HubSpot Add Contact to List
When this happens in Klaviyo... Get List

Do this in HubSpot Add Contact to Workflow
When this happens in Klaviyo... Get Metric

Do this in HubSpot Create Associations
When this happens in Klaviyo... Get Tag

Do this in HubSpot Create COS Blog Post
When this happens in Klaviyo... New Campaign

Do this in HubSpot Create CRM Object

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