Turn the switch from Use Unified Messaging to Forward to Email if you want to ONLY receive emails
Keep the switch on Use Unified Messaging to use both the phone voice portal and have an option to receive an email
Confirm the email address in the "Email will be sent to" field IF you have selected Forward to Email
Enter the preferred email address in the "Forward a copy of this email to" field and turn it on IF you want a copy sent there, or if you have selected Use Unified Messaging