Email addresses remain your most valuable marketing asset. Mailchimp integration with Squarespace helps you build and manage your subscriber list effectively while automating key marketing tasks.

Core Integration Features

• Collect emails through forms and newsletter blocks
• Create newsletter pop-ups for lead generation
• Add newsletter signup option at checkout
• Sync orders, products and customer data
• Send automated blog post newsletters via RSS

Setting Up Domain Authentication (Custom Domains)

1. Create two CNAME records in Squarespace DNS:

• First Record: Host = k2._domainkey, Data = dkim2.mcsv.net
• Second Record: Host = k3._domainkey, Data = dkim3.mcsv.net

2. Complete authentication in Mailchimp (allow time for CNAME records to take effect)

Form and Newsletter Block Best Practices

• Use new, empty Mailchimp audiences for each block
• Keep form fields identical when connecting multiple blocks
• Limit form fields to 30 per Mailchimp guidelines
• Maximum 255 characters per field value
• Disable additional required fields in Mailchimp

Double Opt-In Settings

• Enabled by default to reduce spam
• Required for EU compliance
• Can be disabled through form editor settings
• Manages subscription confirmation via email

Multiple Account Management

• Connect different Mailchimp accounts to separate forms
• Use unique audiences for each form/newsletter block
• Ensure identical fields when sharing audiences
• Reset connections if experiencing issues

E-commerce Integration

• Sync products, orders, and customer data
• Automate checkout newsletter signups
• Track campaign performance through analytics
• Create targeted email campaigns based on purchase behavior

Troubleshooting Tips

• Verify field matching between forms and audiences
• Check CNAME record setup for authentication
• Allow time for DNS changes to propagate
• Contact Mailchimp support for extension-specific issues

This integration enables powerful email marketing automation while maintaining clean subscriber data and ensuring regulatory compliance.

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