BlindPost

BlindPost is a private messenger built for people who value their privacy.

TRULY PRIVATE

• End-to-end encryption for all messages, calls, and files (XChaCha20-Poly1305 + Ed25519)

• No phone number or email required to sign up

• No ads, no trackers, no analytics SDKs

• Servers are blind — they store only encrypted blobs and cannot read your messages

FEATURES

• Private and group chats with full E2E encryption

• Voice and video calls (WebRTC, E2E encrypted)

• Send photos, videos, files, and voice messages

• Burn after read — messages auto-delete after viewing

• Link previews with OG metadata

• Polls in group chats

• Message reactions and replies

• Contact card sharing

• Forward messages (text, image, video, file, contact)

SECURITY

• Your Ed25519 public key is your User ID — no phone number, no email

• Your private keys never leave your device

• Encrypted backup and restore via 12-word recovery phrase

• No personal information required — servers cannot link communications to your real identity

• Open architecture: P2P server cluster, no single point of failure

• PIN lock and biometric authentication (Face ID / fingerprint)

AVAILABLE IN 6 LANGUAGES

English, 中文, 繁體中文, 日本語, 한국어, Español

BlindPost exists to protect your right to private communication in the digital age.