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.