Can users at least opt-out of persistent chat history? Or define a timeframe after which message are deleted? You are basically confirming that your company is

Can users at least opt-out of persistent chat history? Or define a timeframe after which message are deleted? You are basically confirming that your company is storing a lot of personal data without user specific encryption. This is pretty scary and I hope you have some improvement about this situation on your roadmap. If not your are a "leak" away from a big problem. Cool features are neats, but in 2016 privacy should not be seen as a secondary feature...