Welcome to Community Voice Mail: "Community Voice Mail provides free, 24-hour nationwide voice mail to people in crisis - connecting them to jobs, housing and hope"
This represents one of those things that most of us take for granted, but which many people do not have access to -- the means of receiving private communications. According to the CVM website, it seems that many of their clients are focused on trying to find housing or a job, but I assume that this would also be helpful for persons stuck in an tyrannical household where they would be afraid to have messages left on their home answering machine or sent to them by mail.
CVM also seems to have a very reasonable strategy--they provide the technical service and "subcontract" to established organizations (Goodwill, YMCA, etc) who actually have contact with the people who need this service.
Secure, reliable communication systems are essential for freedom. Good for them!