How to Track Custom Parameters in Cometly

In this article, we'll show you how to use custom parameters in Cometly to track the performance of specific campaigns, promotions, or affiliates. This can be particularly useful if you want to monitor the success of a unique initiative, such as a special offer or affiliate-driven traffic.

If you prefer to watch a video guide, we've included a helpful tutorial below. For those who prefer text instructions, we've detailed the process step-by-step after the video.

Watch the Video Tutorial

Step-by-Step Instructions

What is a Custom Parameter?

A custom parameter allows you to add a unique identifier (e.g., comet_custom=XYZ) to your links. This identifier enables you to track specific results for campaigns or promotions directly in Cometly.

For example:

Track the number of leads driven by a particular affiliate.
Monitor how many conversions came from a specific campaign or promotion.

How to Add a Custom Parameter to Your Links

Decide on Your Custom Parameter
Choose a unique identifier that makes sense for your campaign or promotion. For instance:
- comet_custom=affiliate123 for tracking an affiliate.
- comet_custom=summerpromo for a summer promotion.
- comet_source=ig&comet_custom=igbio for tracking instagram bio hits
Add the Parameter to Your Links
Append ?comet_custom=XYZ to the URL of the page you are promoting.
- If your URL already contains other parameters, add &comet_custom=XYZ after the other parameters.
Examples:
- If your original URL is https://www.yourwebsite.com, the new link becomes:
  https://www.yourwebsite.com?comet_custom=XYZ
- If your original URL is https://www.yourwebsite.com?comet_source=google, the new link becomes:
  https://www.yourwebsite.com?comet_source=google&comet_custom=XYZ
Share the Updated Link
Share this link with your affiliates, partners, or use it in your campaigns. When someone clicks on the link, the custom parameter will be passed through to Cometly.
Track Results in Cometly
Once the custom parameter is added, you can view the performance of the link in Cometly.
- Navigate to the report builder in Cometly to see metrics like leads, trials, and conversions associated with the custom parameter.
- Recommended report is a table report and 'Group By' option should be 'URL Parameters.'
- Set the report to filter by 'URL Parameter' > 'contains' > 'summerpromo' (or whatever your custom parameter is)
- Pro tips: Keep the 'Sources' clear so that all sources are included and set your attribution model to 'First Touch' and attribution window to 'LTV'

Tips for Using Custom Parameters

Use descriptive and unique names for your custom parameters to make tracking easier.
For example, instead of using comet_custom=test, use comet_custom=blackfriday2025.
Ensure the updated links are tested before sharing widely to confirm they are working as intended.

By following these steps, you can effectively track specific promotions, affiliates, or campaigns in Cometly and gain valuable insights into your marketing efforts.

If you have further questions, feel free to reach out to our support team or check out our help center.

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