Voicemail is defined as a modern kind of answering machine that allows you to electronically store voice messages and retrieve them with a PC or system telephone or have them served as an e-mail. Voicemail is often a part of so-called unified messaging solutions that, provide users with individual answering machines serving up voice messages via their desktop PC, in addition to fax and e-mail services. Depending on the implementation, the voicemail service is provided by either the phone system itself, a Voice over IP (VoIP) server or an extension of the telephone system.
Where there is an incoming phone call and the called party cannot accept it, the individual addressed mailbox will respond with a recorded announcement and then give the caller the option to leave a message. This message is stored in digital form as an audio file that can then be accessed by the person who was called via the various different options of the system phone or from a PC. In addition, the message can be sent as an attachment to an email. In this event, the called party receives each new incoming voice message as an email in their inbox. This allows them to listen to the message at any time and at any location. Modern voicemail systems make it possible to arrange communication processes much more efficiently, both in business and in private life.