Automate Mailchimp & Xero

Stop paying for mismatched spreadsheets. Sync data between Mailchimp and Xero 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 ["Mailchimp"]
        T1(["Automation Emails Dynamic Dropdown"])
    end
    
    subgraph Middleware ["Enterprise Integration Core"]
        W[Webhook
Listener] --> V{Validation
& Auth}
        V -->|Fail| DLQ[Dead Letter
Queue]
        V -->|Pass| Map[Data Mapping
& Transformation]
        Map --> Retry[Rate Limiting
& Retries]
    end
    
    subgraph Target ["Xero"]
        A1(["Add Items to Existing Sales Invoice"])
    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 Mailchimp and Xero operate independently, marketing teams often face delays in campaign execution due to manual data entry. For instance, if a new subscriber signs up through Mailchimp, their information must be manually input into Xero for invoicing purposes. This leads to potential errors in customer details, such as incorrect email addresses or missing billing information, which can result in lost revenue opportunities. The marketing team wastes hours each week ensuring that subscriber data is accurately reflected in Xero, diverting their focus from strategic initiatives.

Top Ways to Automate Mailchimp & Xero

Automated Subscriber Sync: Effortlessly sync your Mailchimp subscriber lists with Xero, ensuring that your marketing campaigns always target the most current customer data without manual updates.
Real-Time Financial Reporting: Automatically track and report the financial performance of your email campaigns by linking sales data from Xero to your Mailchimp metrics, providing insights into ROI and campaign effectiveness.
Streamlined Invoicing for Campaigns: Generate and send invoices directly from Xero for customers acquired through Mailchimp campaigns, simplifying the billing process and enhancing cash flow management.

How to Build the Mailchimp → Xero Sync

In Mailchimp, configure a Standard Webhook to trigger on the 'subscribe' event. Set the webhook URL to your endpoint that will handle incoming data.
In your webhook handler, extract the relevant payload data such as 'email_address', 'first_name', and 'last_name' from the incoming request.
Use the extracted data to construct a JSON object that matches the Xero API format for creating a new contact. Ensure you include necessary fields like 'Name', 'EmailAddress', and 'ContactType'.
Make a POST request to the Xero API endpoint at 'https://api.xero.com/api.xro/2.0/Contacts' with the constructed JSON object in the request body.
Handle the response from Xero, checking for success or error messages, and log any issues for troubleshooting.

Developer Warnings & API Gotchas

Ensure that the 'ContactType' field in the Xero API matches the expected values; using incorrect types can lead to failed API calls.
Be cautious with the 'email_address' field; Xero requires that each email address is unique, so if a subscriber already exists, you will need to handle updates rather than creating duplicates.
When mapping fields, remember that Xero's 'Name' field requires a specific format (e.g., 'First Last'), so concatenate 'first_name' and 'last_name' appropriately before sending the request.

Supported API Operations

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

When this happens in Mailchimp... Automation Emails Dynamic Dropdown

Do this in Xero Add Items to Existing Sales Invoice
When this happens in Mailchimp... Automations Dynamic Dropdown

Do this in Xero Add Note to Invoice
When this happens in Mailchimp... Email Opened

Do this in Xero Add or Update Stock Items
When this happens in Mailchimp... Fetch Custom Actions

Do this in Xero Allocate Credit Note to Invoice
When this happens in Mailchimp... Hidden trigger for static segments

Do this in Xero Create Account

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