I have a confession to make: I haven't recorded a new voicemail greeting in nearly a decade. Since then, I've (hopefully) become more articulate, poised, and self-assured. But hear my voicemail recording, and you'd think I was still new to the work world, a little unsure of myself — and probably not an authority.
Last, make sure you keep this voicemail account up to date, especially if you have some kind of "out of office" message, telling people where you are. Michael Hyatt updates his voicemail message every day-- it may seem excessive, but it lets his callers know that he regularly checks his voicemail, cares about messages he receives, and is likely to get back to them.

Before you record your business voicemail greeting, be sure to rehearse it so you feel comfortable and don’t stumble around. You might want to write a script and practice a few times out loud beforehand.
Some of the best business phone systems allow you to create multiple voicemail greetings so that you don’t have to constantly re-record your greeting. This is a great feature as it gives you the option to have different voicemail greetings depending on whether a call comes in during or outside of business hours.