How to use Voice Mail System.   Important   Please turn on your desktop speakers and check the volume level settings.   The script demonstrates a voice mail application by setting in advance the SMTP server, From address, To address, Subject and Body of the mail, File name of the voice file before sending the email. If POP authentication is required, then we need to supply the POP3 server, Username and Password also with the mail.   All these fields are specified and stored under a group variable, $email.   Sending mail may cause a few minutes delay. Consequently, the caller is directed to listen to cool music before submitting the delivery report.