Put yourself in your listener’s shoes. Have you ever tried listening to someone on the phone who’s just talking so fast? Apart from not understanding what they have to say, you could also be tempted to just cut the call and drop it. Or, it becomes an inconvenience to your listeners for them to have to rewind your message frequently just to understand the message.
Grasshopper's features also can help make a small business look larger. For example, everyone in your office can have an extension. If you want to create a more professional appearance for inbound calling, Grasshopper provides customizable main greetings, routing for extensions, a name directory, music on hold, and a voice studio (for a small upcharge) if you don't like your own voice and you'd like a voice actor to tell your customers to press 13 for new sales.

Consider adding 'You can also email your query to us at [insert email address here]. These queries will be answered within [insert time frame].' Again, if you intend to make a promise to your customer in a voicemail, ensure you keep it.
No matter how hard you try to have all of your calls answered each time the phone rings, such an ideal situation may not happen all the time. There are some days in business that are busier than others, and the calls will be left on the line. Hence, you can also use your voicemail for reaching out to clients and marketing activities like cold calling.