> For the complete documentation index, see [llms.txt](https://docs.n8n.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.n8n.io/integrations/builtin/trigger-nodes/n8n-nodes-base.customeriotrigger.md).

# Customer.io Trigger

[Customer.io](https://customer.io/) enables users to send newsletters to selected segments of customers using their website data. You can send targeted emails, push notifications, and SMS to lower churn, create stronger relationships, and drive subscriptions.

{% hint style="info" %}
**Credentials**

You can find authentication information for this node [here](/integrations/builtin/credentials/customerio.md).
{% endhint %}

{% hint style="info" %}
**Examples and templates**

For usage examples and templates to help you get started, refer to n8n's [Customer.io Trigger integrations](https://n8n.io/integrations/customerio-trigger/) page.
{% endhint %}

## Events <a href="#events" id="events"></a>

* Customer
  * Subscribed
  * Unsubscribe
* Email
  * Bounced
  * Clicked
  * Converted
  * Delivered
  * Drafted
  * Failed
  * Opened
  * Sent
  * Spammed
* Push
  * Attempted
  * Bounced
  * Clicked
  * Delivered
  * Drafted
  * Failed
  * Opened
  * Sent
* Slack
  * Attempted
  * Clicked
  * Drafted
  * Failed
  * Sent
* Sms
  * Attempted
  * Bounced
  * Clicked
  * Delivered
  * Drafted
  * Failed
  * Sent

## Related resources <a href="#related-resources" id="related-resources"></a>

n8n provides an app node for Customer.io. You can find the node docs [here](/integrations/builtin/app-nodes/n8n-nodes-base.customerio.md).

View [example workflows and related content](https://n8n.io/integrations/customerio-trigger/) on n8n's website.

Refer to [Customer.io's documentation](https://docs.customer.io/api/) for details about their API.