Automate Mailchimp & Google Calendar

Stop paying for mismatched spreadsheets. Sync data between Mailchimp and Google Calendar 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 ["Google Calendar"]
        A1(["Add Attendees to Event"])
    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 Google Calendar operate independently, event data such as RSVP counts and attendee details can become misaligned. For instance, if a marketing team schedules an event in Mailchimp but fails to manually update Google Calendar, the calendar may show outdated information, leading to confusion among team members and clients. This results in wasted hours spent cross-referencing attendee lists and manually entering data, particularly for the event coordination team who relies on accurate scheduling.

Top Ways to Automate Mailchimp & Google Calendar

Automated Campaign Scheduling: Seamlessly sync your Mailchimp campaigns with Google Calendar to automatically schedule email sends based on your team's availability and key marketing events.
Event Reminders and Follow-ups: Automatically send reminders and follow-up emails to participants of your Google Calendar events, ensuring no one misses important meetings or webinars.
Centralized Reporting: Generate comprehensive reports that combine campaign performance from Mailchimp with event attendance data from Google Calendar, providing insights that drive future marketing strategies.

How to Build the Mailchimp → Google Calendar Sync

In Mailchimp, navigate to the 'Webhooks' section under 'Account' settings. Create a new webhook that triggers on the 'subscribe' event for your audience.
Set the webhook URL to your endpoint that will handle the incoming data. This endpoint should listen for POST requests from Mailchimp.
In your webhook handler, extract the relevant data from the payload, such as 'email_address', 'first_name', and 'last_name'.
Prepare a JSON object with the necessary fields to create a new event in Google Calendar, including 'summary', 'start', 'end', and 'attendees'.
Use the Google Calendar API's 'events.insert' endpoint to POST the prepared JSON object. Ensure you include the required OAuth 2.0 access token in the Authorization header.
Test the integration by subscribing a new contact in Mailchimp and verifying that the event is created in Google Calendar with the correct attendee information.

Developer Warnings & API Gotchas

Ensure that the 'start' and 'end' times in your Google Calendar event are formatted in RFC3339 format; failure to do so will result in errors during the API call.
When extracting attendee emails from Mailchimp, confirm they are valid and not duplicates in Google Calendar to avoid conflicts when adding attendees.
Be cautious with timezone differences; if your Mailchimp events are set in a different timezone than Google Calendar, it can lead to incorrect event scheduling.

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 Google Calendar Add Attendee(s) to Event
When this happens in Mailchimp... Automations Dynamic Dropdown

Do this in Google Calendar Create Calendar
When this happens in Mailchimp... Email Opened

Do this in Google Calendar Create Detailed Event
When this happens in Mailchimp... Fetch Custom Actions

Do this in Google Calendar Delete Event
When this happens in Mailchimp... Hidden trigger for static segments

Do this in Google Calendar Move Event to Another Calendar

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