Last month, we reported that Google had begun beta testing an updated version of their messaging app with end-to-end encryption, which has been a long-awaited feature.
Google has now begun releasing a beta version that will encrypt message only during one-to-one messages. Google initially enabled end-to-end encryption for one-to-one conversations. It will be on by default with no option to disable and past chats automatically upgraded. For this function to work, both parties have to be on the Google Messages beta.