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All Tutorials /Mailchimp

How to Integrate Mailchimp with Square

Updated on:
June 5, 2026
By:
Madhav Bhandari
Use this interactive demo to learn how to connect your Square account to Mailchimp in minutes.

Quick summary

This tutorial shows how to integrate Mailchimp with Square by navigating the Integrations panel and completing the OAuth authorization flow for both platforms. Once connected, Square customer and purchase data syncs automatically to a Mailchimp audience for targeted email marketing.


Steps

  1. On the left-side panel, tap Integrations.
  2. Access the search bar and type Square.
  3. Find and select Square from the search results.
  4. Click Connect to begin the integration setup.
  5. Click Log In With Mailchimp to authenticate your Mailchimp account.
  6. Provide your Mailchimp user credentials, then click Log In.
  7. Tap Allow to agree to the terms and grant the necessary permissions.
  8. Click Log In With Square to authenticate your Square account.
  9. Enter your email address or phone number and click Continue.
  10. Type in your registered password and click Sign In.
  11. Tap Allow to authorize the Square integration request.
  12. Select your preferred Mailchimp audience, then click Continue to Map Fields.
  13. Input the required field mapping information and tap Continue to Sync.
  14. Click Go to Dashboard to complete the setup.
  15. Your Square account is now fully integrated with Mailchimp and ready to sync data.

📌 Why this matters

Integrating Mailchimp with Square allows e-commerce and retail businesses to automatically sync Square customer purchase data into Mailchimp audiences, enabling highly targeted email marketing campaigns based on real transaction history. This connection eliminates manual data exports and ensures your contact lists stay up to date every time a customer buys in-store or online. Marketers can use purchase behavior — such as loyalty status, order history, and product preferences — to trigger personalized automations that drive repeat revenue. For any Square merchant looking to grow customer lifetime value, the Mailchimp integration is a direct, low-effort path to smarter email marketing.
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