# Integrate Mailchimp and Calendly for event registration

> To sync event registrations between Calendly and Mailchimp using Zapier, first create a new Zap, select Calendly as the trigger app with the Invitee Created or Event Scheduled event, and test the connection. Next, add Mailchimp as the action app, choose the Add/Update Subscriber event, map the invitee fields to your Mailchimp list, test the setup, and publish your Zap.

Canonical: https://livedemo.ai/tutorials/integrate-mailchimp-and-calendly-for-event-registration/
Apps: Mailchimp, Calendly
Updated: 2026-10-05
Interactive demo: https://story-api.livedemo.ai/workspaces/62255d3d3304f17b8f5e2d03/stories/692a5300ab56e05a00000604/preview?step=1

## Steps

1. Log in to Zapier, click "Create," and select "Zaps" to start automation.
2. Click "Trigger."
3. Search for and select Calendly as the trigger app.
4. Choose a trigger event, such as "Invitee Created" or "Event Scheduled" then connect your Calendly account to Zapier.
5. Select Webhook subscription scope.
6. Run a test to ensure Zapier detects new event registrations from Calendly.
7. Add Mailchimp as the Action App.
8. Select an action event, such as "Add/Update Subscriber" then connect your Mailchimp account to Zapier.
9. Map Calendly invitee fields (e.g., name, email) to the appropriate Mailchimp list fields.
10. Run a test to confirm event registrants are added to your Mailchimp audience, then click "Publish" to turn on your Zap.