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Zapier makes it easy to integrate Mailchimp with Square - no code necessary. See how you can get setup in minutes.
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Mailchimp
Mailchimp
1. Choose trigger event
Square
Square
2. Choose action
1. Select the event
Setup
Test
Mailchimp
Choose a trigger event
Choose a trigger
A trigger is the event that starts your Zap—like a "New Campaign" from Mailchimp.
Add your action
An action happens after the trigger—such as "Add Customer to Group" in Square.
You’re connected!
Zapier seamlessly connects Mailchimp and Square, automating your workflow.
Supported triggers and actions
Zapier helps you create workflows that connect your apps to automate repetitive tasks. A trigger is an event that starts a workflow, and an action is an event a Zap performs.
Create a new record or update an existing record in your app.
First Name
Last Name
Email_address
Phone_number
Country
Street Address
Apt./Suite
City
State
ZIP
Other
Company
Nickname
Reference_id
Action
This is an event a Zap performs.
Write
Create a new record or update an existing record in your app.
Location
Required
Customer ID
External Identifier
Buyer Email Address
Payment Type
Required
Payment Note
Quantity
Required
Amount
Required
Currency
Required
Line Item Name
Catalog Item Variation ID
Pickup
Display Name
Carrier
Expected Ship Date/Time
Shipping Note
Fulfillment Email Address
Phone number of the fulfillment recipient
Address Line 1
Address Line 2
State
County
Country
City
Postal Code
Discount Type
Name
Percentage
Amount Discounted
Discount Currency
Name
Percentage
Type
Action
This is an event a Zap performs.
Write
Create a new record or update an existing record in your app.
Customer ID
Required
Group
Required
Action
This is an event a Zap performs.
Write
Create a new record or update an existing record in your app.
Customer
Required
Attribute
Required
Value
Required
Idempotency Key
Action
This is an event a Zap performs.
Write
Create a new record or update an existing record in your app.
Stop on error
Required
HTTP Method
Required
URL
Required
Query string parameters
Additional request headers
Body
Action
This is an event a Zap performs.
Write
Create a new record or update an existing record in your app.
Field_help
Email_address
Phone Number
Reference ID
Action
This is an event a Zap performs.
Search
Find existing data in your app
Field_help
Text Filter
Location
Action
This is an event a Zap performs.
Search
Find existing data in your app
Field_help
Email_address
Phone Number
Reference ID
First Name
Last Name
Country
Street Address
Apt./Suite
City
State
ZIP
Other
Company
Nickname
Action
This is an event a Zap performs.
Search or write
Find existing data in your app, or create a new record if no data is found
For AI agents & developers
Use Mailchimp and Square with AI agents and code
Beyond Zap workflows. Call Mailchimp and Square actions directly from your AI client or your codebase, using the same 9,000+ app integrations Zapier already runs.
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Connect via Zapier MCP
Expose Mailchimp and Square actions as tools in any MCP client. Authenticate once, then call them in natural language.
Example actions on this page
Archive Subscriber
Add Customer to Group
Works with
Claude · ChatGPT · Cursor · any MCP-compatible client
There is no Python package yet. SDK is TypeScript-only (@zapier/zapier-sdk). The MCP server URL is personal to your account; get it at zapier.com/mcp.
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Practical ways you can use Mailchimp and Square
Sync new Square customers to Mailchimp
When a new customer is added in Square, Zapier automatically adds them as a subscriber in Mailchimp. This ensures your email marketing list is always up to date with your latest customers, saving time and improving the reach of your campaigns.
When a new order is processed in Square, Zapier sends the order details to Mailchimp to trigger automated email campaigns. This automation ensures seamless communication of relevant information, improving customer experience and system efficiency.
When someone unsubscribes from a Mailchimp audience, use Zapier to remove their information from Square. This alignment keeps your contact database clean and ensures you respect user preferences across platforms.
Learn how to automate Mailchimp on the Zapier blog
Learn how to automate Square on the Zapier blog
Make work flow with AI
Level up your Mailchimp to Square integration with AI. Extract, summarize, and transform your integration data with leading AI models like OpenAI, Anthropic, and more.
Frequently Asked Questions about Mailchimp + Square integrations
New to automation with Zapier? You're not alone. Here are some answers to common questions about how Zapier works with Mailchimp and Square
How do I connect Mailchimp with Square using our platform?
You can integrate Mailchimp with Square through our platform by setting up a Zap that uses triggers and actions. For example, you can set a trigger for every new transaction in Square, which can then automatically add or update a subscriber in your Mailchimp list.
Can I use this integration to sync customer emails between Mailchimp and Square?
Yes, by setting up triggers such as 'New Customer' in Square, you can ensure emails are automatically added to your Mailchimp audience. This keeps your customer email list consistently updated without manual intervention.
Is it possible to create automated campaigns in Mailchimp based on Square transactions?
Absolutely. You can create automated workflows where each new transaction in Square acts as a trigger to start specific email campaigns or follow-ups within Mailchimp.
What types of data can be transferred from Square to Mailchimp using this integration?
Data that can be transferred typically includes customer information such as names, email addresses, and purchase details from transactions to help personalize marketing efforts.
Are there any limitations on the number of zaps I can set between Mailchimp and Square?
The number of zaps you can set up depends on your pricing plan with us. Each plan has a different limit on the number of zaps and tasks that you can use per month.
How often is data synchronized between Mailchimp and Square?
The synchronization occurs as defined by triggers in the zap setup. Typically, data is transferred almost instantly when an event matching your trigger occurs within either application.
Can we filter the information being passed from Square to Mailchimp? If so, how?
Yes, you can filter the data through condition-based triggers and actions while setting up your zap. This ensures only relevant information is passed according to predefined criteria you've set within our platform.
About Mailchimp
Mailchimp is an email and marketing automation platform built for growing businesses. Turn email and SMS into revenue.
Square creates tools that help sellers of all sizes start, run and grow their businesses. Square’s point-of-sale service offers tools for every part of running a business, from accepting credit cards and tracking inventory to real-time analytics and invoicing.