The last few years have seen a huge rise in the use of automated voicemails and auto-attendant greetings. This has been especially true for the business sector, where professionals should record friendly and polite voicemails to greet their customer callers.
Once you have your message, you need to actually record it. The exact process varies depending on whether you’re using a cell phone or office phone, but here’s the basic process: Press the voicemail button, or press and hold 1 on most cell phones. Enter your password. Record your message. Listen to the message you just recorded. Follow the prompts to save your message. Following Up on Voicemail Messages

Mailbox greetings play when a caller reaches a user's mailbox. There are two greetings: one that plays when the user's phone is busy and the other when they don't answer or when they have their phone in Call Forwarded Always to voice mail. The default no-answer greeting plays a message recorded by the user. A typical user-recorded greeting would identify the user and inform callers that they are unable to answer their call� example: "Hello. You have reached John Doe. I am in today but missed your call. If you would like, please leave your name, telephone number and message at the sound of the tone and I will return your call as soon as possible. Thank you."
Hello, you have reached the dental office of Dr. X. We are busy assisting a patient now, but will call you back as soon as possible. Please leave your name, reason for calling, and your number. If this is an urgent enquiry, please call 911. In this case, the dentist is giving a reason for not being available and they’re providing a way to prioritize the patients who need the most help. They’re also leaving an emergency number for the most severe of situations.