I'm considering getting a phone number that is solely used for voicemail. The voicemails would be emailed to me where I would download them. Why would I want to have such a thing? Well, I'm hoping to set it up for people to call and record encounters with police or whatever. I got the idea from a similar thing some free staters had set up in New Hampshire. I decided to put it into effect when I realized a couple things: my voice recorder in my phone is too difficult to navigate to, it only records two minutes, and even if I got to it and recorded, the phone could be taken with my information going with it (and possibly being deleted). So with a voicemail box, someone could put it in their speed dial, it would go straight to voicemail and it would be recorded. Then I could download the messages to an encrypted drive (or three). So here are some of my questions:

-Would anyone else use this besides me?
-How much redundancy and security would you think I need?
-If a person illegally recorded (say like in a two party consent state where everyone being recorded has to be informed) would I be held liable for possessing the recording (assuming they could get to it on encrypted drives)?
-Would anyone be interested in donating (BTC or otherwise) to help defer some of the costs?