Even in today's fast-paced world, customers don't like being greeted with an automated message. According to the New York Times, callers of a certain age are put off entirely if they are answered by a voicemail instead of a real person.
Auto-attendants with a customized holiday greeting can be a festive way to mark the occasion. If you have a retail business, create a holiday greeting to inform customers of any limited-time sales you are offering. If your office is closed for the holiday, be sure you state this in your message.

6. Keep Your Recording Up to Date. If your business is closing on one of its normal operating days for a holiday, or is dealing with an emergency or unforseen situation, you should update your after hours announcement to avoid confusion.
With the increasing number of businesses engaged in fraudulent activity and personal identity theft, it is no wonder why people are too concerned about who they are dealing business with. There are a lot of things that you can possible do in order to project the perfect image your company needs. From having a professionally looking website up to an appealing office in a great location, the companies that consider growing the client base seriously will do anything they can. But there’s one thing they often miss or really don’t consider: A professionally sounding voicemail greeting.