Squarespace Mailchimp Integration Guide

If you’re running a website on Squarespace and managing an email list in Mailchimp, you don’t need to manually export and import contacts between the two platforms. The native integration handles contact synchronization, allowing you to build your subscriber base automatically as visitors sign up through forms on your Squarespace site. This is especially valuable for small businesses, freelancers, and e-commerce operators who want to nurture leads without juggling spreadsheets.

How the Integration Works

The Squarespace-Mailchimp integration connects your website’s contact forms and email capture tools directly to your Mailchimp audience. Here’s what happens under the hood:

• Contact Form Sync: When a visitor submits a form on your Squarespace site (newsletter signup, contact form, or email capture block), their information is automatically sent to a designated Mailchimp audience list.
• Real-Time Data Transfer: New subscribers appear in Mailchimp within minutes, so your email list stays current without manual intervention.
• Audience Mapping: You choose which Mailchimp audience receives contacts from each Squarespace form, allowing you to segment subscribers by signup source or interest.
• Field Matching: Standard fields like email address, first name, and last name are automatically mapped between platforms. Custom fields can be configured during setup.
• No Code Required: The integration is configured entirely through Squarespace’s built-in settings—no API keys or developer work needed for basic setup.

Key Features & Capabilities

Here’s what you can accomplish once Squarespace and Mailchimp are connected:

• Automatic List Building: Every website visitor who opts in is instantly added to your Mailchimp audience, eliminating manual data entry and reducing list decay from outdated imports.
• Multi-Form Segmentation: Create different signup forms on different pages of your Squarespace site and route them to separate Mailchimp audiences or tags, so your email campaigns reach the right people.
• Welcome Automation: Set up automated welcome emails in Mailchimp that trigger immediately when a new contact arrives from your Squarespace form.
• E-commerce Integration: If you’re using Squarespace’s e-commerce features, you can capture customer emails and segment them by purchase history or product interest within Mailchimp.
• Abandoned Cart Recovery: Combine Squarespace’s cart data with Mailchimp’s automation to send targeted recovery emails to customers who didn’t complete their purchase.
• Unified Subscriber Management: View all contacts from your Squarespace forms in one Mailchimp audience, making it easy to run campaigns, track engagement, and manage unsubscribes.

Setup Difficulty: Easy

Estimated Time: 5–10 minutes

Connecting Squarespace to Mailchimp is straightforward and requires no coding. Here’s the typical process:

1. Log in to your Squarespace account and navigate to the form or email capture block you want to connect.
2. In the form settings, select “Mailchimp” as the submission destination.
3. Authorize Squarespace to access your Mailchimp account (you’ll be prompted to log in to Mailchimp if you aren’t already).
4. Choose which Mailchimp audience should receive the contacts from this form.
5. Map form fields to Mailchimp fields (usually auto-detected for standard fields like email and name).
6. Save and test by submitting the form yourself to confirm the contact appears in Mailchimp.

If you have multiple forms on your site, repeat this process for each one. The entire setup can be completed in under 10 minutes for most users.

Alternatives & Workarounds

If the native Squarespace-Mailchimp integration doesn’t fully meet your needs, consider these options:

• Zapier: Use Zapier to create more complex workflows between Squarespace and Mailchimp, such as triggering actions in other apps when a new contact arrives or conditionally routing subscribers based on form responses.
• Make (formerly Integromat): Similar to Zapier, Make offers visual workflow automation and can handle multi-step processes involving Squarespace, Mailchimp, and third-party tools like CRM systems or payment processors.
• Mailchimp API: For advanced use cases, developers can use Mailchimp’s REST API to build custom integrations that sync data beyond standard contact fields, such as custom metadata or behavioral data from your Squarespace site.
• Alternative Email Platforms: If you need deeper e-commerce integration, consider ConvertKit, ActiveCampaign, or HubSpot, which may offer more extensive Squarespace connectors depending on your use case.

Frequently Asked Questions

Does the integration sync existing Squarespace contacts to Mailchimp?

No, the native integration only syncs new contacts going forward from the moment you activate it. If you have existing contacts in Squarespace that you want to add to Mailchimp, you’ll need to export them from Squarespace and import them into Mailchimp manually, or use a tool like Zapier to perform a one-time bulk sync.

Can I use the integration if I have a custom domain on Squarespace?

Yes, the integration works regardless of whether you’re using a Squarespace subdomain or a custom domain. The connection is tied to your Squarespace account and Mailchimp audience, not to the domain itself.

What happens if a contact unsubscribes from Mailchimp?

If a subscriber unsubscribes from your Mailchimp audience, they won’t receive future emails from that list. However, if they resubmit the form on your Squarespace site, they may be re-added depending on Mailchimp’s settings. Check your Mailchimp audience settings to control whether unsubscribed contacts can be re-added.

Can I map custom fields from my Squarespace form to Mailchimp?

Yes, during setup you can map custom form fields to Mailchimp merge fields. For example, if your form collects “Company Name” or “Phone Number,” you can map those to corresponding Mailchimp fields so the data is captured alongside email and name.

Important Disclaimer

Integration features and capabilities may change as both Squarespace and Mailchimp update their platforms. This guide reflects current functionality as of the time of writing. Before implementing this integration in a production environment, verify the current features and setup steps on the official Squarespace and Mailchimp support pages. Test the integration thoroughly with a small group of contacts to ensure it meets your specific business requirements.