People have short attention spans these days, and you should always craft your communications for the lowest common denominator with something as universal as your voicemail.
3.) Benvenuti alla John Doe. Al momento non possiamo rispondere personalmente alla vostra chiamata, oppure ci state chiamando fuori dall’orario di lavoro. Si prega di lasciare un messaggio con il vostro nome e numero di telefono – vi richiameremo al più presto possibile. Grazie e arrivederci.

From Burke, an exercise in antisocial oddness: "You have reached the live psychic hot line. We know who you are and why you are calling, so at the beep, hang up."
Any business answering machine greeting you use should also be customized and personal for your needs. If you have an emergency service, that a caller can activate through the press of a button for faster response, then you should indicate this in the message. It can also be helpful to remind callers of the information they need to provide in their message, such as their name, contact information, and reason for calling. You should also thank the caller for his or her call at the end of your message and indicate that you plan on returning the call as soon as possible. You might also Like Reminiscence February 8, 2014