I apologize that I don't know what code you need to track in your URL's, but our system does track who clicks what link and that can be found in our "Reporting" section of Constant Contact. As far as creating and adding your own tracking codes other than Google Analytics, and Constant Contacts reporting, that is not a service we offer. I've reached out to members of our upper level support team to take a look at your inquiry, and they mentioned something that might suit your needs. Take a look at this article on how to add Google Analytics to your Custom Coded email if you are looking to track additional information. Be sure that your website is properly configured for Google Analytics for the tracking to work. If you are looking to track more than we offer, and what Google Analytics offers, please let us know.
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