Here’s a generic business voicemail greeting example: “Thank you for calling [company/person’s name]. We are currently unavailable, but if you leave your name, phone number, and message, we will get back to you as soon as possible.” The above greeting is a professional voicemail script used by many growing and established businesses.
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.

https://www.biggerpockets.com/forums/87/topics/29293-voicemail-or-answering-service-
If you live alone, it’s best not to advertise that fact in your outgoing message. If you do, you may leave yourself vulnerable to burglars, stalkers, and other criminals. Instead of saying, “I can’t come to the phone,” say, “No one can come to the phone.”