Typically, most of these services are uniform—i.e. include the same tools and features (send a script, they record it in a tone you approve, they send it as a file, you supply any feedback, etc.); however, there are some services that go above and beyond. For example, VoiceOverPro, is a single voice professional who records 30 second voicemail messages based on users’ scripts. This is standard; however, users also have options like adding music, recording up to 60 seconds (or 150 words), rush, 2-day turnaround, and even same day delivery.
Website: https://www.macrynvoicegreetings.com/macryn-voicemail-greetings-services/pbx-voip-cloud-phone-recordings/cisco-professional-phone-recordings-auto-attendant-voicemail-greeting/

Friends and colleagues speak to each using first names only. So do people of authority. They do not call each other and leave voicemail messages asking for Mister, Miss, or Mrs. Therefore, when you call a person you want to do business with and you leave a voicemail message, refer to them by their first name only. Don't say mister, miss, or misses. Don't say their last name. Begin your voicemail message by saying only "hi/hello" followed by the person's first name. Or, you can even forget the "hi/hello" and just say the person's first name. That is how you show confidence and authority and separate yourself from weak salespeople.
16. Hi, you’ve reached [X Business Name]. Our regular business hours are [State opening hours]. If you need to reach someone immediately, please call [contact’s name] at [cell phone number]. If not, leave your name and contact information and a representative will get back to you when we re-open.