Delta Chat: Secure, open-source chat over email. Group media & federated messaging with no tracking or central servers. Easy to use via email.
Delta Chat offers a private and decentralized messaging experience, similar to popular messenger apps, without centralized control or data tracking. It leverages existing email infrastructure for seamless communication with contacts, regardless of whether they use Delta Chat or not. This eliminates the need for additional servers and ensures that chat and contact data remain on your devices, preventing uploads of personal information like address books or calendars. You can communicate privately with anyone using their email address; recipients receive a standard email and reply directly without needing to install Delta Chat or sign up. Media sharing works seamlessly, with attachments appearing as regular emails for both sender and recipient. Delta Chat utilizes your existing email account, allowing for easy switching of mobile numbers and SIM-free operation while maintaining complete control over your data.