The ability to assign an encryption key to a phone number voicemail would be very valuable. Working with HIPPA customers it is a government requirement to encrypt data, especially as it is being stored in an un-known location services by RingRoost. By encrypting the voicemail in storage that would protect the PII of the person leaving the message. The data would be decrypted on playback from dialing in to check voicemail or when an email is sent with the message attached to a know email address (should that option be selected)