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Zapier makes it easy to integrate MailerLite with Square - no code necessary. See how you can get setup in minutes.
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MailerLite
MailerLite
1. Choose trigger event
Square
Square
2. Choose action
1. Select the event
Setup
Test
MailerLite
Choose a trigger event
Choose a trigger
A trigger is the event that starts your Zap—like a "Subscriber Clicked Campaign Link" from MailerLite.
Add your action
An action happens after the trigger—such as "Add Customer to Group" in Square.
You’re connected!
Zapier seamlessly connects MailerLite 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.
Subscriber Clicked Campaign Link
Triggers when a subscriber clicks a link in a campaign.
Create a new record or update an existing record in your app.
Inventory Change Type
Required
Location
Required
Catalog Object
Required
Quantity
Required
Ignore unchanged counts
Action
This is an event a Zap performs.
Write
Create a new record or update an existing record in your app.
Location
Required
Order ID
Required
Customer ID
Required
Accepted_payment_methods
Required
Payment due date
Required
Tipping enabled
Invoice title
Invoice number
Description
Delivery method
Required
Scheduled at
Date of sale
Action
This is an event a Zap performs.
Write
Create a new record or update an existing record in your app.
Payment
Required
Refund amount
Reason
Team member
Action
This is an event a Zap performs.
Write
Create a new record or update an existing record in your app.
Help_text
Location
Required
Action
This is an event a Zap performs.
Write
Create a new record or update an existing record in your app.
Customer ID
Required
First Name
Last Name
Email_address
Phone_number
Country
Street Address
Apt./Suite
City
State
ZIP
Other
Company
Nickname
Reference ID
Birthday
Action
This is an event a Zap performs.
Write
Create a new record or update an existing record in your app.
Find Order by ID
This action retrieves the details of a specific order from Square using the order ID.
Action
This is an event a Zap performs.
Write
Create a new record or update an existing record in your app.
Customer_id
Action
This is an event a Zap performs.
Search
Find existing data in your app
Location
Required
Field_help
Customer
Fulfillment_state
Status
Action
This is an event a Zap performs.
Search
Find existing data in your app
Location
Required
Field_help
Customer
Fulfillment_state
Status
Customer ID
External Identifier
Source
Ticket Name
Quantity
Amount
Currency
Catalog Item Variation ID
Note
Unique Identifier
Amount Discounted
Amount Discounted Currency
Name
Percentage
Type
Unique Identifier
Name
Percentage
Type
Unique Identifier
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 MailerLite and Square with AI agents and code
Beyond Zap workflows. Call MailerLite and Square actions directly from your AI client or your codebase, using the same 9,000+ app integrations Zapier already runs.
No code
Connect via Zapier MCP
Expose MailerLite and Square actions as tools in any MCP client. Authenticate once, then call them in natural language.
Example actions on this page
Add Subscriber to a Group
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 MailerLite and Square
Use new Square payments to update MailerLite subscriber groups.
When a customer makes a completed payment in Square, Zapier can add their email address to a specific subscriber group in MailerLite. This helps business owners streamline their post-sale engagement, ensuring a seamless experience for the customer and boosting retention efforts.
Notify IT about unsubscribed users to maintain system access.
Zapier can notify an IT Slack channel whenever a user unsubscribes from a group in MailerLite. This automation helps IT teams prevent unauthorized access and maintain secure access controls for digital resources that were tied to MailerLite communications.
Sync subscriber updates from MailerLite to Square customer records.
When subscriber fields are updated in MailerLite, Zapier will automatically sync the updates with the corresponding customer record in Square. This keeps marketing and operational data aligned, enhancing data accuracy and ensuring targeted campaigns reach the right audience.
Learn how to automate MailerLite on the Zapier blog
Learn how to automate Square on the Zapier blog
Make work flow with AI
Level up your MailerLite 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 MailerLite + Square integrations
New to automation with Zapier? You're not alone. Here are some answers to common questions about how Zapier works with MailerLite and Square
How can I integrate MailerLite with Square?
You can integrate MailerLite with Square through our platform by setting up a series of automated workflows wherein specific triggers in Square, such as a new transaction or customer addition, prompt corresponding actions in MailerLite like adding the customer to an email campaign or updating your subscriber list.
What are the primary triggers available for the MailerLite and Square integration?
In our integration setup, you can use triggers such as 'New Transaction', 'New Customer', and 'Updated Customer' from Square. These can drive actions like subscribing a customer to a MailerLite group or sending out specific email follow-ups automatically.
Can I update contact information in MailerLite based on changes in Square?
Yes, any updates made to customer details in Square can trigger an action that updates the contact's information within your MailerLite account. This helps ensure that your subscriber data remains consistently accurate across platforms.
Is it possible to segment my MailerLite audience using data from Square?
Absolutely. By using data points from transactions or customer activities captured in Square, you can automatically create segments within your MailerLite audience. Our platform allows this through customizable rules that map user activities to demographic insights.
How do I troubleshoot if the integration between MailerLite and Square is not working properly?
In case of issues with the integration, first check if the triggers and actions are correctly configured according to your business logic needs. We recommend reviewing any error messages provided on our dashboard and ensuring both accounts have the necessary permissions set up properly for seamless data transfer.
Are there limits on how many times a trigger-action pair can execute between MailerLite and Square?
While using our platform, there's no hard limit on executions; however, performance considerations might require implementing rate limits depending on transaction frequency. It's crucial to design efficient flows that don't exceed API call limitations imposed by either service.
Can notifications be set up for successful execution of actions following a trigger event between MailerLite and Square?
Yes, you can opt into receiving notifications each time an action successfully executes following a trigger event. This feature allows real-time monitoring of your integrations' effectiveness directly through our notification settings page.
About MailerLite
MailerLite’s super-fast email marketing platform helps you grow your business online using innovative email designs, automations, email segmentation and intuitive no-code tools to create websites, landing pages, and signup forms.
App Builder, CRM (Customer Relationship Management), Forms & Surveys, Zapier
About Square
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.