While covering all of the relevant information, aim to keep your voicemail to about 20 seconds. You definitely should not ever record a business voicemail longer than 30 seconds, and anything less than 10 seconds will typically mean that you are either speaking too quickly or aren’t providing all of the required information.
The voice mails I receive in response to this greeting allow me to use my time most productively. I learn the purpose of the call and when they are available for a return call. This allows me to prioritize when I need to return calls and helps me be better prepared for the ensuing conversation.

Going away for vacation or leaving the office unattended shouldn't stress you out. That's why OnSIP designed voicemail greeting setup to take only a handful of steps.
Combine with a Business Intro Message to provide menu options and assist in telephone navigation. As opposed to the passive nature of Messages On Hold, voice prompts are interactive. They are designed to bring out a physical reaction from the caller, a call to action. And because voice prompts are directive, it’s important they’re concise, well written, and recorded by a professional voice artist.