A virtual office space is traditionally a street address for rent with phone service. The virtual office will give a business nexus appearance in the corporate world or for small businesses. A true virtual office will have a respectable business address, mail forwarding capabilities, an online account and phone service.
Do not confuse a PO Box shop with a virtual office space provider. A real street address makes a huge difference over a PO Box. The best virtual office services will include a form of mail scanning for your documents. Real time viewing of your mail is a possibility with instant viewing from scanning of mail.