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.
If you are in and out of your office a lot, provide the caller with the day and date. This also sends the message that the voicemail is updated on a regular basis and the call will get responded to.

There's no single best way to craft an after hours greeting. The most important point is that you equip your customers with what they need to know, and give them an avenue to contact you, whether that's through voicemail, email, or other channels.
13. “Hello, you’ve reached the [Department name] at [your company]. We can’t take your call right now, but please leave your name, contact information, and the reason for reaching out. One of our team members will be in touch within the day. To ensure we don’t miss you again, you can also let us know the best time to call you back. Thanks and have a great day.” This greeting lets your caller know your Customer Service team is just as efficient as you are.Voicemail greetings for calls received after business hours