It's easy to get carried away in a voicemail and include more detail than is necessary. We've all been in that situation where the automated or pre-recorded voice on the end of the line goes on and on with more information than you can take in.
Adam Boalt, CEO of LiveAnswer, a provider of phone support services for small and midsized businesses, puts the voicemail abandonment rate at between 50 percent and 75 percent, depending on the type of business.

“Hi there! You’ve reached [XYZ Company]. We are unable to take your call at the moment, but we want to hear what you have to say. Please leave your full name, contact details and reason for reaching out, and one of our staff members will get in touch with you within 24 hours. Thanks!”
Congratulations! You've recorded a professional voicemail greeting that your callers love. If you want them to keep loving it, you'll need to update regularly. Adding seasonal information and varying your message keeps your greetings fresh, which is especially important for businesses whose clients and customers call in on a regular basis.