The only way I know of to forward a voice mail to an email address is by using a third party software such as YouMail. You can Google YouMail and check out their services. Happy Holidays.
I recommend a feature we offer known as Visual Voicemail. Not only will you be able to forward messages to both email and other phones, you will have other options not available in the basic voicemail feature. Here is a link for additional information in reference to Visual Voicemail:
Here are the steps to actually forwarding messages:
You can forward messages via Voice Message through the following steps:
You can forward message to Email through the following steps: