Virtual office is a real Business address with lots of real office facilities attached to it.

You can use it on your business cards, letterheads and other company correspondence. There is a reception desk which answers your phone calls in your company name on a dedicated line, and relays messages. It helps to handle your mail, including couriers and faxes. You can pick it up at your convenience, or they do weekly mail forwarding for you. You get a free notification of all your mail that has arrived.