In the email editor, an unsubscribe link can be added using the interface;
This results in the following code, which will generate a unique unsubscribe URL per recipient;
unsubscribe
<a href="{{unsubscribe}}" title="Click here to unsubscribe" target="_blank">Click here to unsubscribe</a>
Rendering of the unsubscribe URL
The unsubscribe link is rendered only if it's included within an `<a>` tag, as shown in the example above.