You can fine-tune this similarly to how companies A/B test their websites, ads, call scripts, and anything else that requires a change. The more elements of a call you look at, the more likely you’ll be able to optimize your voicemail greetings. If you jump right into the greeting without saying “Hello,” go back and make your greeting more personal on the second attempt.
I have a confession to make: I haven’t recorded a new voicemail greeting since 2014. In the past four years, I (hopefully) have 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. Obviously I need toupdate it. And if you haven’t changed your voicemail greeting in over a year, you’re likely in the same boat. After all, a professional voicemail recording boosts your credibility, makes you seem more competent, and encourages whoever’s listening to it to continue the relationship. A relatively unprofessional one — like mine, for instance — does the opposite: It encourages prospects, recruiters, and potential connections to run in the other direction. With that in mind, I’ve written 18 unique voicemail greetings for every situation. Pick your favorite, practice a few times, then record your new voicemail.

– Hello. You have reached Tim’s office. I cannot answer the phone right now but I will return your call as soon as possible. Please leave a message if it is urgent or you can call my secretary on the extension (number). If this call is regarding a query, you can logon on to our website (website’s name) and leave a message.
Now that you know what you want your customers to do when they leave a message, you have to make sure that message is coming off clearly. Run it by a couple of your colleagues and ask them if your greeting makes sense and adjust wherever necessary. If you’re speaking too fast, slow down. Accounting isn’t the most inviting profession.