To set up an automation in Customer.io that sends an email when a user's record is updated, follow these steps:

Create a Segment for the Target Attribute

Create a segment to group users based on the attributes needed in order to trigger the email. In this example we will send an email when a new customer is created and the step attribute equals thank-you.

Set Up the Campaign Triggered by Segment Entry

Now, create a campaign that triggers when a user enters the "Step - Thank You" segment:

4. Design the Email Workflow

Within the campaign, set up the email to be sent:

5. Activate the Campaign

After configuring the workflow: