Setting up a domain name on your site is a very important thing to do. All prominent companies use their own domain names as a part of a brand. This is how most of your customers will find you in the Internet, so you should take care of a domain name for your site beforehand. Moreover, own domain makes your website on Getsocio a white-label, which means that your customers will never know that you are using a ready-made service.
When all is done, you will get a website with own domain name and fully functioning mailing system.