Mustang is an Open-Source desktop and mobile app that seamlessly integrates email with team chat, video conference, calendar and file exchange into a single app for communication. It is available for Windows, macOS, Linux and planned for Android and iOS. It respects user privacy and data sovereignty, keeping the data on your own computer systems. By supporting various open protocols (and optionally through extensions also closed protocols of multiple vendors), it allows for a smooth transition to openness. In this project, the focus is on UX design, connecting the various apps together to create a unified whole.
