Now, this might seem like I'm reneging on what I just said, but you can easily reconcile this point with the one above. While you should keep your tone conversational, you can't get carried away.
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.

Funny, the majority of us have a phone on us more hours of the day than not, but actually we’re harder to talk to than ever. On personal calls, and especially business calls, you’re much more likely to reach voicemail than the actual person you’re hoping to engage in conversation.
Your phone number is the last thing you should say on a voicemail. Say it once, slowly, and make sure to repeat it again. This has two benefits: First, it makes your phone number the last thing they hear, which encourages an immediate call back. And, second, in the age of voicemail dictation, it ensures your phone number appears clearly at the end of the message text. It will be hyperlinked and easy to push for a quick reply from your prospect.