Telling a quick joke or including a little more information can keep you safely within the 20-second timeframe while letting the caller understand a little more about you.
As you work on keeping your voicemail brief and professional, it should also be personalized and tailored in such a way that it meets your industry’s standards. Otherwise, no matter how professional you may sound, a mismatch in the tone and message will still render your business voicemail ineffective.

A relatively unprofessional one — like mine, for instance — does the opposite: It encourages prospects, recruiters, and potential connections to run in the other direction.
An auto-attendant message is the first interaction your customers or potential customers will have when they call. With today’s robus phone systems, don’t miss the opportunity to maximize caller interaction. With a well-produced phone menu, you can demonstrate your organization’s proficiency, reduce call wait times and reduce the amount of time spent routing callers. Route callers to the correct extension Prevent misrouted calls and reduce caller frustration Free up operators and agents to perform more productive tasks Conveniently route multilingual callers to an appropriate agent or telephone interpreting service Impress callers and reinforce company reputation with a voice that represents your brand