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.
Call your home phone number. Depending on your location, you can press #, * or 2 to interrupt the greeting, and then enter your PIN. Follow the prompts to listen to your messages.

Solution: Voicemail should be a part of your company’s overall phone system, Baldwin says, so you can maximize functionality and integrate it with other tools and business applications. “If your voicemail is separate because it’s stored solely on your mobile phone, you need to get it off that and put it on the messaging app that comes with your business voice phone service,” he says.
To clear any customers doubts or expectations, make sure to mention on your voicemail when you’ll be available. Don’t say that you will “try” to return their call. Instead, offer them a realistic timeframe in which they can expect their call to be returned, so they know what to expect - whether it will take you 24 hours or a week to get back to them. This will eliminate your customer’s worries about your timeliness and encourage them to wait for your reply instead of heading over to your competitors.