> For the complete documentation index, see [llms.txt](https://docs.hockeystack.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hockeystack.com/integrations/other/customer.io.md).

# Customer.io

HockeyStack’s Customer.io integration lets you track campaigns, newsletters, and all associated messages directly inside your workspace. You’ll be able to see campaign emails sent, emails opened, links clicked, and more — all in one place.

#### How to Connect

To connect your Customer.io account:

1. Go to **Settings** → **API & Integrations**.
2. Scroll down to **Customer.io** under the *Marketing Automation* section.
3. Enter your **API Key** and select your **Region** (US or EU).

<figure><img src="https://318687664-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FedLASfWbQxGa0eYkwALS%2Fuploads%2Ff6ujc1Trij09mwq0XhmA%2Fimage.png?alt=media&amp;token=aae37bb1-36a9-4f1a-ac44-d842a9de4973" alt="" width="360"><figcaption></figcaption></figure>

#### Example Use Case

After integration, you can create goals using properties pulled from Customer.io.

For example, here is a goal that tracks users who clicked an email from one of your Customer.io campaigns:

<figure><img src="https://318687664-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FedLASfWbQxGa0eYkwALS%2Fuploads%2FZDRiTQizR7nQZrRn33jb%2FScreenshot%202025-04-11%20at%202.13.21%E2%80%AFPM.png?alt=media&amp;token=2faa66ff-8cef-4887-9709-0373a4dd6ccf" alt=""><figcaption></figcaption></figure>

From there the goal can be used throughout the platform!


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