Popular Customer.io + MailChimp flows

Start from a real workflow other teams are already running.

Choose a trigger

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Customer.io

When this happens...

Choose an action

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MailChimp

Automatically do this!

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Supported Triggers & Actions

Everything you can automate between Customer.io and MailChimp.

When this happensTriggers

A trigger is an event that starts a workflow.

Customer Events

Customer Events

Triggers when Events are performed on customer

Email Events

Email Events

Triggers when Events are performed on Email.

In-app Message Events

In-app Message Events

Triggers when Events are performed on messages.

Push Events

Push Events

Triggers when a push notification is drafted.

SMS Events

SMS Events

Trigger when an SMS delivery event happens (e.g., sent, delivered, failed, opened, clicked).

Slack Events

Slack Events

Triggers when a slack message is drafted, attempted, sent, clicked, failed or undelivered.

Do thisActions

Action is the task that follows automatically within your Customer.io integrations.

List campaigns

List campaigns

Returns a list of all of your collections, including the name and schema for each collection.

Create manual segment

Create manual segment

Create a manual segment with a name and a description. This request creates an empty segment

Delete a segment

Delete a segment

Delete a manual segment.

Add Note to Subscriber

Add Note to Subscriber

Add a note to an existing subscriber in a selected audience.

Add Subscriber to Tag

Add Subscriber to Tag

Fix tag_name type normalization in Add Subscriber to Tag perform code to resolve Mailchimp 400 string type error.

Update Subscriber

Update Subscriber

Update an audience subscriber's email address, subscription status, or profile (merge) fields.

How to build your first workflow with viaSocket
2-Minute Guide

Learn how to build your first workflow

Follow a simple walkthrough to create, test, and launch your first automation.

  1. 1

    Connect your apps

    Link the apps you want to automate.

  2. 2

    Configure your workflow

    Set up triggers, actions, and map your data.

  3. 3

    Test & publish

    Test your workflow and publish it.

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Video 1

Learn how to automate Customer.io and MailChimp workflows.

Video 2

Learn how to automate Customer.io and MailChimp workflows.

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Integrations Customer.io
Customer.io + MailChimp
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About Customer.io

Customer.io is a versatile marketing automation platform designed to help businesses create, send, and optimize targeted email campaigns. It enables users to engage with their audience through personalized messaging and automated workflows, ensuring effective communication and improved customer relationships.

Learn more

Frequently Asked Questions

How do I connect Customer.io and MailChimp?

Sign up for a free viaSocket account, then authorize both your Customer.io and MailChimp accounts. From there, pick a trigger in one app and an action in the other. Your first workflow can be live in under five minutes.

Does this integration work in real time?

Yes. viaSocket uses instant triggers where available, so data moves between Customer.io and MailChimp as soon as the event happens. Scheduled polling triggers run at a maximum interval of 15 minutes.

Can I control which data gets sent from Customer.io to MailChimp?

Yes. You can map specific fields, apply filters to skip records that do not match your conditions, and transform values before they reach MailChimp. No coding required.

Can the integration run in both directions?

Yes. You can set up a workflow where Customer.io triggers actions in MailChimp, and a separate workflow where MailChimp triggers actions in Customer.io. Both run independently and in real time.

What happens if a step in the workflow fails?

viaSocket logs every run so you can see exactly what succeeded and what failed. Failed tasks can be retried from the dashboard without re-configuring the workflow.

Is viaSocket free to use?

Yes, there is a free plan that covers basic workflows between Customer.io and MailChimp. Paid plans unlock higher task limits, faster polling, and advanced features like multi-step workflows and conditional logic.

Do I need to know how to code to set this up?

No. The entire Customer.io and MailChimp integration is built through a visual, point-and-click interface. Code blocks are available if you want them, but they are never required.