Using Parameters and SubID to Track Links
Linkly records the query parameters used when a user clicks a link.
For example, if your link is:
Linkly will record subid=facebook for that click, and show it in the reports.
You can append any key=value pair onto an URL, and even string multiple ones together, for example:
which will record subid=facebook and campaign=retarget.
Results are shown in the traffic reports under the ‘Parameters’ tab.