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Availability: Custom Domain Tracking is available for Enterprise customers. Contact Courier Support or your account team for access.
By default, Courier uses ct0.app for link tracking. Enterprise customers can use a custom tracking domain (e.g., tracking.mywebsite.com) for a more branded experience and improved deliverability.

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Why Use Custom Domain Tracking?

  • Brand consistency: Links in emails display your domain instead of a third-party tracker
  • Improved trust: Recipients are more likely to click links from a recognizable domain
  • Better deliverability: Custom domains can help avoid spam filters that flag common tracking domains

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Setup Process

Custom domain tracking setup requires coordination with Courier Support.
1

Provide your tracking URL

Contact Courier Support with your desired tracking subdomain, typically something like tracking.mywebsite.com.
2

Add DNS records

Courier will provide two DNS records to add:
  1. Certificate validation record: Required for Courier’s infrastructure to accept requests from your domain. Courier Support will provide the specific values.
  2. CNAME record: Point your tracking subdomain to Courier’s tracking infrastructure. 
tracking.mywebsite.com  CNAME  tracking.ct0.app
3

Activation

After DNS records propagate, Courier Support will enable the feature for your workspace. Once activated, all tracked links in your notifications will use your custom domain.

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Verification

After setup, test by sending a notification with tracked links. The links should resolve through your custom domain rather than ct0.app.