- Delta Chat is a decentralized, open-source, end-to-end encrypted, and anonymous messaging app that does not require a phone number or email address to sign up.
- The app previously operated through existing email infrastructure, but now provides users with a random email address and handles all backend processes, enhancing privacy and convenience.
- Features include audio/video calls, group chats, read receipts, disappearing messages, file sharing, and multi-device login, with strong encryption preventing spam.
- Setup involves downloading the app, creating a profile without personal information, and adding contacts via QR codes or invite links.
- Delta Chat offers advantages over competitors like WhatsApp and Signal due to its anonymity, decentralized structure, resistance to blocking/censorship, and data export ease, though adoption among contacts may be limited.