Before you record a professional voicemail greeting, you may want to consider the type of people who might call your home or business. That way, you can think about the information these callers might need before you compose your greeting. Most callers are familiar with how to leave a voice message, so try to avoid giving them instructions. Some things you may want to include in your greeting might be your full name, title, name of your company, and an alternate method of reaching you. If you plan to be unavailable for some time, it can be a good idea to tell your callers when you will return and give them the name and phone number of another individual to call in the event they need immediate assistance. A private voicemail box enables a person to receive telephone messages when the phone cannot be answered.
One way to identify your pain points can be as simple as meeting with your team to discuss what makes their day — and the customer’s day — harder. By anticipating what your customers are struggling to find on their own, you can potentially solve their problems before they leave a voicemail or, at the very least, point them in the right direction. This will help ease your own pain by making the experience easier for the client to navigate, leading to a more organized process.

You could add the words "After-Hours Service" or "After-Hours Line" after the company's name. That way there's no concern over whether it is indeed a number that reaches a real person who will return their call during non-business hours. It's a way to let them know they're on the right track. If that makes sense. :)
Are you creating a voicemail greeting for your entire company or team? These business voicemail greetings will do the trick.