Try to avoid unnecessary phrases that only make your greeting longer, like “leave your name and number and what you’re calling about.” Most people know what “leave a message” means.
If you have a business VoIP phone system that offers an auto attendant feature, you should be able to create a phone menu fairly easily. Be sure to state which key the caller should press to select an option on the menu.

For phone greetings to be successful, they need to be: Crisp. A crisp, clear voice goes a long way. The message needs to be clearer than glass. No shuffling papers or dogs barking in the background. **Professional. **Your phone greeting needs to sound like you're a real company, not a random person answering their cell phone. Thought-out.
I have a confession to make: I haven't recorded a new voicemail greeting in nearly a decade. Since then, I've (hopefully) 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.