Relays + Messages That Evaporate by Design
No corporate servers. No blockchains. No metadata. Your infrastructure, your rules, your privacy.
Why LetUsMsg
Ephemeral First
All data stored in RAM, automatically purged on shutdown. Relays self-destruct and respawn every ~7 days.
Local First
Hyper-local messaging is possible — messages never leave your building. Deploy on your own network.
Post-Quantum Crypto
All latest Post-Quantum ciphers — including experimental — available for your cipher chain.
Zero Metadata
Relays never learn who you are. Only anonymous channel UUIDs. No logs, no analytics, no traces.
Configurable Encryption
Choose the cipher-chain and number of encryption rounds per chat space. Your security, your rules.
Deploy Anywhere
Lightweight static binary runs entirely in memory. Zero disk writes, zero dependencies. One static binary deployable on K3s, Docker, or bare metal. No databases, no cloud dependencies.
How It Works - Standard
Install Client
Grab the client for your platform: iOS, Android, macOS, Windows, or Linux.
Accept Invite Code
Someone shares an invite code with you and apply that inside the app. On iOS you can tap the invite code for a seamless experience.
Chat Securely
Participants join the chat space. Every chat space participant sets their own alias. There is no address book, phone numbers, usernames, etc; no PII data. Messages flow through RAM, then vanish.
How It Works - Pro Features
Create a Chat Space
Create a new chat space with the wizard. A chat profile defines many options for the chat space experience and security posture.
Share Invite Code
Create an invite code instantly, set parameters for one-time use or group sharing along with expiration. Share an invite code and participants join within app.
Deploy a Relay (ultra secure)
Deploy your own relay for ultimate control of your message flow and ownership of ALL data. Each chat space can have independent relays for complete control over your message data
Beyond Centralization
| Feature | LetUsMsg | Signal | Session | SimpleX | |
|---|---|---|---|---|---|
| Server Model | Ephemeral relays (RAM) | Central nonprofit | Blockchain nodes | Rotating relays | Central cloud |
| Data Retention | None (volatile) | Limited | Metadata minimized | Minimal | Retained |
| User Identity | Per-Chat Anon ID | Phone number | Anonymous ID | Random ID | Phone number |
| Metadata Logs | None | Minimal | Minimal | Minimal | High |
| Infrastructure | User-owned | Foundation | Node network | Community | Meta |
| Relay Lifetime | ~7 days | Indefinite | Indefinite | Indefinite | Indefinite |
Available Everywhere
Take Back Your Privacy
Deploy your own relay in minutes. Messages flow through RAM, not databases, then vanish on schedule.
Deploy Now