Humor also leaves a lot of room for misinterpretation—which subsequently weakens sincerity and authority. A caller can be very turned off by merely misinterpreting your joke. Why take this risk? Additionally, this could even cause callers to question your character. Say, for example, the president of a company’s mobile phone voicemail greeting was funny. What’s to happen if the caller didn’t like or get the joke? What if they found it offensive? Another scenario is that a caller is reaching out to you for the first time—i.e. they have no idea regarding your personality. What next? The point is, with this type of greeting, humor is bound to be more divisive so just avoid it altogether. c. Poorly Pacing Your Message and Bad Time Management: Don’t speed through your message. Speak clearly so callers know what to include in their message and when to leave the message. At the same time, don’t drag your message out. No one wants to sit through a diatribe. Just get to the point clearly.
Website: https://www.amazingvoice.com/blog/10-best-professional-voicemail-greetings

Some providers might indicate they prefer phone calls. In some cases, the phone call will direct you to a reception line. In other cases, you will be prompted to leave a message in their confidential voicemail box. You can use the following script when leaving a message: Hi, my name is ____. I found you through (name of website or referral).
A voicemail greeting, on the other hand, refers to the message that your callers hear upon answering the phone. Voicemail greetings can include any information you’d wish to convey, such as special sales, bargains, alternate phone numbers to use, or your company’s normal working hours.