Last but not least a slogan or branding: this is really more important for new customers and people that are calling or leaving a voicemail for the first time rather than returning ones (though it helps a little with them too!). A catchy phrase makes it easier for people to remember your name and recognize you when you give them a call back.
You can’t always get to the phone when clients, partners, investors, or colleagues call you. When this happens, a professional voicemail greeting helps you make a positive impression and tells them what to do next. There are a variety of ways to convey your message. If you’re not sure what type of message to record for your own voicemail box, here’s a definitive guide to get you started.

For example, if you have an alternative method of contact, you can leave the details of it here.
This type of service can be very beneficial as users are still able to craft their own messages, while a professional reads them. In doing so, companies can spend more time on the scripting process, making sure the text conveys everything they want it to. As such, companies may bring in expert teams to draft, revise, and/or finalize the script itself. The bottom line is you can take more time to get the words right. Additionally, in working with a professional voice talent, you are ensuring your words have the utmost impact—i.e. the words are read perfectly with the right tone, resonance, pacing, etc.