To create a greater sense of authority, and that you are somebody important, list the name of a person and company who you've worked with before, especially if that person and company is a direct competitor of the person you are calling. Nothing grabs the interest of the person you are calling faster than hearing the name of their main competitor.
Voicemails can give an important message or inform the caller about the receiver’s status. Thus, it is important for you to be clear while recording such messages. Here are a few examples of voicemail greetings to get an idea about appropriate messages that can be recorded the next time you leave your house or desk.

A clever, witty voicemail message can be short or long, complex or simple, as long as it is entertaining. Using famous lines from TV shows or movies is a great place to start. There is a lot of creative wordplay that you can use based on famous lines from classics like The Twilight Zone. For instance, you could say, "Hello, you've reached the Twilight Phone, where every message is sent into another dimension. To receive an interdimensional call, just leave your name and number, and I'll call you from the closest parallel universe."
Why your business voicemail greeting matters A good first impression goes a long way, and a voicemail greeting is the first impression to your business. An expertly crafted voicemail script lets your clients know you’re dependable, capable, and confident. An unprofessional voicemail script, on the other hand, can do the exact opposite.