Is it possible to use a Webflow form to sign up users for specific Mailchimp groups or can custom code be used to achieve this integration?

Yes, you can use a Webflow form to sign up users for specific Mailchimp groups, but Webflow's native Mailchimp integration does not support assigning users to groups directly. Custom code is required to achieve this functionality.

1. Use Mailchimp's API with Custom Code

• Obtain your Mailchimp API Key: Go to Mailchimp Account Settings > Extras > API Keys and generate an API key.
• Find Your Audience ID: Navigate to Mailchimp Audience Settings > Audience Name & Defaults to find your list ID.
• Retrieve Group IDs: In Mailchimp, go to Audience > Manage Contacts > Groups, select your group, and note the Group ID.
• Use JavaScript and Webflow's Form Submission Hook: Add custom JavaScript to send the form data to Mailchimp's API.
• Example Workflow: On form submission, intercept the data with JavaScript, format it as required by Mailchimp’s API, and send it via an AJAX request.

2. Use Zapier to Connect Webflow and Mailchimp Groups

• Set up a Zapier Webhook: Zapier can capture Webflow form submissions and pass them to Mailchimp.
• Create a New Zap:
• Trigger: Webhooks by Zapier (Catch Hook)
• Action: Mailchimp (Add/Update Subscriber in an Audience)
• Use Zapier’s options to assign the subscriber to a specific group.

3. Use a Third-Party Integration Tool

• Services like Integromat (Make) or Automate.io can automatically forward Webflow form submissions to Mailchimp while assigning users to groups.

Summary

Webflow’s native Mailchimp integration does not support signing users up for specific groups, so you need custom JavaScript with Mailchimp’s API, Zapier webhooks, or an integration tool like Integromat. This ensures that form submissions are correctly categorized into Mailchimp groups.