EVERYONE who's busy and gets a lot of voicemails!
You Need a Paper Trail
Your cell messages end up in your email inbox. You can save the email, with the original voice message intact, onto your hard drive. This is ideal when messages are related to transactions. It's ideal for record keeping.
You Have Co-Workers or Partners
You're working with others and need to keep them in the loop. Voicemail to Email is a great feature to keep everyone informed.