Combine personalized links with tracking attribution

For school administrators using GiveCampus Outreach. Controls can differ between the classic email editor and the newer Composer editor.

Keep the personalized destination and token intact while adding the intended tracking advocate/user a parameter to the same URL. Use & when the URL already has a query string. Do not substitute an entire shortened URL for a token or discard person-specific data. Test the final sent link for the right recipient values and attribution; never publish one recipient's personalized link to a general audience.