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Get Your Customer.io App API Key

The App API Key is required to access campaigns, segments, broadcasts, and retrieve data from your workspace.

1

Navigate to API Credentials

Sign in to your Customer.io Dashboard.

  • Click on the settings icon in the top right corner.
  • Select Account settings.
  • Click on API Credentials option.
2

Create App API Key

In the API Credentials page, click the App API keys tab.

  • Click Create App API Key.
  • Enter a name for your key (e.g., “StackOne Integration”).
  • Click Create.
  • Copy the API Key immediately and store it securely.

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Get Your Customer.io Track API Credentials (Optional)

Track API credentials are optional. Add them if you want to send behavioral tracking data, manage customers, and track events.

1

Get Track API Credentials

In the API Credentials page, click the Tracking API keys tab.

  • Note your Site ID displayed in the table.
  • Click Create Track API Key.
  • Enter a name for your key (e.g., “StackOne Tracking”).
  • Click Create.
  • Copy the API Key immediately and store it securely along with your Site ID.

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Linking the Account from the Hub

1

Navigate to the Hub

Use one of the three Linking Account Methods to access the Hub.
2

Fill out the fields

Fill out the following fields using details from your provider:
  • App API Key
  • App API Region
  • Site ID (Track API) (Optional)
  • Track API Key (Optional)
  • Track API Region (Optional)
3

Connect

  • Click Connect
  • If applicable, the provider will redirect you to a sign-in or authorization page. Complete the provider’s authorization flow.
  • Once authorization is successful, you will see a confirmation popup

If the account linking is successful, you will see the newly linked account in your Accounts page.