Latenode

Automatically sync Square customers to a Mailchimp audience

This automation allows small business owners and marketing teams to automatically sync new customer information from Square, a popular point-of-sale (POS) system, to a Mailchimp audience list.

This enables them to easily add new customer contacts to their Mailchimp mailing list for marketing campaigns and newsletters, streamlining the process of growing their email subscriber base. The integration leverages the APIs of both Square and Mailchimp to securely transfer customer data between the two platforms, ensuring a seamless and efficient workflow for managing customer information and marketing initiatives.

Updated Apr 6, 2026Est. run: 26sEst. cost: $0.0703
How Latenode estimates time and cost

Latenode bills workflow runs in credits: 1 credit = 30 seconds of processing. Minimum charge per run depends on your plan. Plug-and-Play (PnP) AI nodes are billed separately—each PnP token is $1 USD, charged pay-as-you-go at vendor cost plus a small processing fee, with no API keys required.

Full pricing — how credits work →
Integrations & automation

Workflow preview

What this template does

  • Extracts new customer data from the Square POS system
  • Normalizes customer information into a consistent format
  • Adds new customer contacts to a Mailchimp audience list
  • Enables targeted marketing campaigns and newsletter outreach
  • Generates a Mailchimp audience list with new customer records

How it works

1
Trigger

Connect Square

Provide your Square API credentials to connect your Square point-of-sale system to the automation.

2
Logic

Transform Square Customer Data

The automation extracts and formats new customer information from your Square sales data, preparing it for syncing to Mailchimp.

3
Action

Sync to Mailchimp

The transformed customer data is securely transferred from Square to your Mailchimp audience list, adding new contacts to your mailing list for marketing campaigns and newsletters.

Setup guide

1

Add Square Credential in Latenode

1. In the Latenode Credentials panel, add a new credential for the Square integration. 2. Select the 'OAuth' authentication method. 3. Follow the steps to authenticate your Square account and grant the necessary permissions for the integration.

2

Add Mailchimp Credential in Latenode

1. In the Latenode Credentials panel, add a new credential for the Mailchimp integration. 2. Select the 'API Key' authentication method. 3. Enter your Mailchimp API key to authenticate the integration.

3

Configure Square to Mailchimp Sync Node

1. In the Latenode visual builder, add a 'Square' node and configure it to fetch new customer data. 2. Connect the Square node to a 'Mailchimp' node. 3. In the Mailchimp node settings, map the relevant customer data fields from Square to the corresponding Mailchimp audience list fields.

4

Set Mailchimp Audience List

1. In the Mailchimp node settings, select the target Mailchimp audience list where the new customer data will be synced.

5

Save and Activate the Workflow

1. Review your workflow configuration in the Latenode builder. 2. Save the workflow. 3. Activate the workflow to start automatically syncing new customer data from Square to Mailchimp.

Requirements

Connect your Square account and obtain the necessary API keys or OAuth credentials to securely access your Square customer data.
Connect your Mailchimp account and obtain an API key to enable the integration to sync new customer information to a designated Mailchimp audience list.
Ensure you have the necessary permissions and workspace access within both the Square and Mailchimp platforms to perform the data sync.
Configure the integration to map the relevant customer data fields from Square to the appropriate fields in your Mailchimp audience list.

FAQ

Common questions about this template

Each run uses credits on your Latenode plan. We charge for processing time (1 credit = 30 seconds). Your actual cost depends on your plan and how long the run takes. See pricing plans for plans and how credits work.

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