You cannot delete just your Zoho Sites account, as Zoho functions on single sign-on (SSO). If you are using other Zoho services, you may simply choose not to use your Zoho Sites account. However, you can shut down your Zoho account entirely if you are not using any other Zoho services. Please note that closing your Zoho account will permanently delete all service data and account information. It cannot be restored in future. https://accounts.zoho.com/u/h#setting/closeaccount