9. Update Your Greeting Frequently. Many of the things that can make your voicemail great, also require that you update it pretty regularly. Information like deals you’re running, when you’re away, and who to contact while you’re out can take your greeting to the next level, but they’re obviously time sensitive.
Context does matter here. If the caller would reasonably expect you to answer the phone (such as if they were calling a store or other place of business), an apology for not being able to get to the phone makes the most sense.

Education Details: Before the digital era, he says more than 80 percent of business lines had voice mail. Now, he estimates only a third of office phones have it.”For customers, even the most professional voicemail greeting is impersonal, and may even harm customer experience (millennials, in particular, avoid using voicemail altogether).
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