BlindPost — Private by Design

An end-to-end encrypted messenger built on the Blind Post protocol. Messages are encrypted on your device before transmission — no server can ever read them. Your Ed25519 keypair is your identity.

Download the App iOS TestFlight How it works →

Windows & Linux versions are in development. Stay tuned!

Alice

🔒 E2E

Hey! Did you get my file?

Yes! All encrypted 🔒

Amazing. No one can intercept?

Not even our servers 😄
Your key, your messages.

🔐 Messages encrypted with X25519 + AES-256-GCM

True End-to-End Encryption

Every message is encrypted with X25519 key exchange and AES-256-GCM on your device before transmission. Even if our servers were compromised, your conversations remain private.

No Phone Number Required

Your Ed25519 public key is your identity. No email, no phone number, no personal data needed to get started. Generate your keys and start chatting immediately.

Blind Post Protocol

Messages are stored as encrypted blobs on relay servers. Servers route data without knowing content, sender, or recipient — like dropping a sealed letter in a mailbox.