While missed calls aren’t ideal, you can let your caller know you’re still there for them by having a great voicemail greeting. The best business voicemail greetings let your customers (and potential customers) know why you’re not available and how they can best get in contact with your business. They are also short and to the point. You usually want to keep your greeting between 6 and 24 seconds long so callers don’t hang up halfway through.
Are you thinking about changing your voicemail greeting? Would you like some help from us? Set up a cranky, funny voicemail, and share a moment of laughter with your dear ones, before they understand your intention behind it and run to get you!

Your voicemail doesn’t have to be monotonous or impersonal. What you need is something that is unique to you but works in a professional manner.
Last, make sure you keep this voicemail account up to date, especially if you have some kind of "out of office" message, telling people where you are. Michael Hyatt updates his voicemail message every day-- it may seem excessive, but it lets his callers know that he regularly checks his voicemail, cares about messages he receives, and is likely to get back to them.