BlindPost

BlindPost is a modern messaging app with end-to-end encryption built in.

CHAT AND CALL
• Private and group chats
• Voice and video calls (WebRTC)
• Share photos, videos, files, and voice messages
• Message reactions, replies, and quotes
• Link previews with rich metadata
• Polls in group chats
• Contact card sharing
• Forward messages (text, image, video, file, contact)

END-TO-END ENCRYPTED
• Every message, call, and file is encrypted on your device before sending
• Uses industry-standard cryptography (XChaCha20-Poly1305 and Ed25519)
• Your private keys are stored only on your device
• Your Ed25519 public key is your user ID — no phone number or email required to sign up
• Zero-knowledge server architecture — servers route encrypted data they cannot read

SECURITY
• PIN lock and biometric authentication (Face ID / fingerprint)
• Encrypted device backup via 12-word recovery phrase
• Disappearing messages option for conversations you want to keep ephemeral
• Open architecture with distributed server nodes for reliability

NO TRACKING
• No ads
• No third-party analytics SDKs

AVAILABLE IN 6 LANGUAGES
English, 中文, 繁體中文, 日本語, 한국어, Español

BlindPost is built for everyday private conversations with the people who matter to you.