General voicemail greeting: used as the default voicemail greeting if no other greeting type is set. Internal voicemail greeting: used to greet people who call your department from within your own company (i.e. from another extension).Generally, this is only applicable to very large companies. External voicemail greeting: played for people who call from outside your company.
It is important that the voicemail greeting be brief but also action oriented. Do you want your caller to leave you a message? Or perhaps they should call another extension to reach an assistant or office manager in your absence? Get to know the business phone system that you are using and take advantage of its features. Some phone systems allow the caller to press a digit, such as 0 to transfer to another extension rather than having to end the call and dial another extension. This type of function can be extremely useful, especially if other people in the office can handle the calls that are incoming to your phone while you are away from your desk, or out of the office.

Another great thing you can do in your voicemail messages is to leave a few spaces for your prospects to record their message, most of the prospects will do it because they know they will be reached out sooner given the situation of their need.
2.) Welcome to John Doe. Unfortunately you are calling us outside our normal business hours. Personally you can reach us Monday to Friday from 8am 6pm and Saturday from 9am to 4pm. Please leave a message, or send us an email to: [email protected]. We will contact you as soon as possible - Thank you.