Cordial enables you to add a contact to an existing list when they click a link containing the "crdl-assignToList" attribute.
<a href="http://example.com/mens/shoes" crdl-assignToList="mens-shoes" style="">My Link</a>
When this link is clicked in an email, the contact will be added to the "mens-shoes" list. Once added to the list, any triggers based on being new to the "mens-shoes" list will be executed.
In the next article we'll learn how to disable link tracking for a link.