Expanding on the simple approach above, let the caller know who they've reached. This will not only eliminate people leaving voicemails by mistake, but it will reassure the caller that they have called the number they intended.
If you live alone, it’s best not to advertise that fact in your outgoing message. If you do, you may leave yourself vulnerable to burglars, stalkers, and other criminals. Instead of saying, “I can’t come to the phone,” say, “No one can come to the phone.”

The phone you use to record your greeting – and your surrounding – can turn your carefully scripted greeting into an unprofessional mess. Background noise is terribly distracting, so choose a quiet room or parked car to make your call. Landlines, or a “wi-fi enabled” cellphone call, can provide much better connection quality than a standard cellphone. If you must use a cell phone, be sure to use a high-quality headset for the best clarity.
2. You will hear a message that welcomes you to the Truphone Voicemail service together with following options: Press 1 to listen to your messages. Press 2 to record a new greeting. Press 3 to change your voicemail settings such as language or PIN number.