I would strongly encourage you not to be backing up your messages on the server, even if they are encrypted. Better still, switch to auto deleting messages. You

I would strongly encourage you not to be backing up your messages on the server, even if they are encrypted. Better still, switch to auto deleting messages. You never know when your message history will be used against you. Carrying around years and years of every conversations can put them and you in potential danger. Words are frequently misinterpreted. Stored Communications are your liability.