When you cancel your subscription, your domain name will be deleted. Once a domain name has been deleted, services associated with it, such as websites and e-mail, will stop working, and anybody can order a new subscription to the domain name.
How to proceed to cancel your subscription and delete your domain name
What does it cost to to cancel a subscription?
We do not bill the registrar for deleting a domain name, but your registrar may charge a fee for their part of the job.