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, it is possible to use Webflow forms to sign up users for specific Mailchimp groups. Webflow has a built-in Mailchimp integration feature that allows you to connect your Webflow forms directly to your Mailchimp account.

To set this up, you will need to have both a Webflow account and a Mailchimp account. Once you have both accounts set up, follow these steps:

1. In your Webflow project, select the form element that you want to connect to Mailchimp.
2. Open the form settings panel on the right side of the designer.
3. Under the "Form submissions" section, click on the "Add form data" button and select "Mailchimp" from the options.
4. A new modal will appear asking you to connect your Mailchimp account. Click on the "Connect" button and follow the prompts to authorize the connection. Make sure you have your Mailchimp API key ready.
5. After successfully connecting your Mailchimp account, you will see additional options in the form settings panel. Here, you can map the form fields to the corresponding Mailchimp fields and select the Mailchimp audience you want to add the subscribers to.
6. If you want to add subscribers to specific Mailchimp groups, you can create a custom field in Mailchimp and map it to a hidden field in your Webflow form. This can be achieved by adding a custom field in your Mailchimp audience settings and using the field tag syntax (e.g., *|FIELDNAME|*) in the name attribute of the hidden input field in your Webflow form. This way, when a user submits the form, they will be added to the specific Mailchimp group based on the value of the hidden field.

With this integration set up, whenever someone submits the Webflow form, their data will be sent to your Mailchimp account, and they will be added to the specified audience and group if applicable.

If you prefer custom code, it is also possible to achieve this integration using Mailchimp's API. By utilizing Mailchimp's API documentation and Webflow's custom code capabilities, you can write custom JavaScript code to handle the form submission and make requests to the Mailchimp API, specifying the group(s) you want to add the subscriber to. This gives you more flexibility and control over the integration process, but it does require coding knowledge and understanding of Mailchimp's API.