What is nowadays referred to as an E-Mail address used to be called an internet address. E-Mail is an electronic mail, which essentially works the same way as conventional mail you receive at your home or office. Only an E-Mail is delivered to you virtually within a few seconds of it being sent. You can create and write your own texts for the receiver to read. You can insert digital images, videos and files just like in a conventional letter. An E-Mail address works just like a domain in the way that it is unique and only has one owner. No two people can have the same E-Mail address unless you share it with someone. Just like conventional mail, your postal address is only yours unless you share your home with others. The access to your E-Mail account is username and password protected, like a lock, to which only you have the key, secures your mailbox. Anyone can send you an E-Mail. You can have free E-Mail services like Hotmail and Googlemail, or you can have your own professional email services.