On Air Recordings recommends you order professional voicemail greetings through their site, then describe the tone, approach, or voice direction you’re going for.
Arguably the most intimidating factor when leaving a voice mail is the fact that once you leave the message, "in one take," there is no taking it back. That is why, especially in the business world, an overwhelming amount of people revert to email rather than leaving a voice mail message. Especially in a technologically advanced world, email or text messages are now used as a primary form of communication. Although there is a good argument behind opting for the written word over the spoken one, an email can lack the human touch, the emotion and enthusiasm in a voice, that can often times generate a better response. In fact, there is no impact that compares to delivering a clear, concise, professional message through your own unique human voice.

To send to an email address with the message attached, check the box next to Attach new voicemail messages and send via email.
"The fact that we have four generations in the workplace, and they're going to be there for some time, the younger generations — the millennials, the Y generation — they're going to need to adapt," Napier-Fitzpatrick says.