a personal greeting as per Option 0, followed by the leave-message tone, and then silence.
Before we head towards the tips for you to get started on creating efficient voicemail messages, there is one thing you need to realize.

If you are ready to record your voicemail greeting, you should already have a solid script. Whether you include your mission statement, some fun personal details, or a favorite quote, making your voicemail greeting personal is a great way to set your business apart. Write down what you're going to say, but try to avoid reading it verbatim as you record, or it may start sounding robotic and rehearsed. When listening to your voicemail greetings your callers shouldn't feel like they're listening to an impersonal recording. Keep it conversational. If you need help achieving that conversational tone, check out these tips.
A good voicemail greeting is short and professional, lets people know that you’ll get back to them, and invites callers to continue engaging with a call-to-action. You should also show your personality if you’re in an industry or role that allows that. If your industry is more conservative, however, you’ll want to keep humor and personal touches to a minimum. A greeting Your name Your company A simple explanation for missing the call (e.g. you’re away from the phone or are on holiday) A rough estimate of when you’ll get back to the person An alternative person to reach out to (if you’re out of office) An alternative mode of communication (if you prefer email or text) A call-to-action such as “Leave a message” or “Send me an email at [email protected]”