Zunu Mail. Private Emails. Zunu Mail is your private email system that encrypts your email conversations. With Zunu, you get 100% Privacy for your emails and attachments. Zunu makes your emails from Gmail and Outlook private. We use patented technology that lets you make your emails truly private. Share personal memories, collaborate on projects, or conduct business without being tracked or profiled. Built on Privacy by Design principles, Zunu shields your emails from snoopers and hackers. Z