Click tracking allows you to measure the clickthrough rate of a link you shared in your email.
You can do that using the Prospect.io domain but if you don't want your prospects to see Prospect.io as tracking domain, you can add a CNAME (Canonical Name) record in your DNS settings.
In other words, you can create a subdomain that'll allow you to make your link point to your own domain, itself pointing to c.prospectrck.com in order to track clicks.
The set-up process depends on every host. If you are having trouble with this, please check with your network administrator or contact us at firstname.lastname@example.org
Once your CNAME is set, you can enter it in your Tracking settings.