The differentiator
A serverless messenger with no backend to trust
Every other messenger runs servers that see your metadata. PrivaMesh runs on Solana instead - there is no PrivaMesh server to breach, subpoena, log, or shut down.
When people say “messenger without servers,” they usually mean the servers are somewhere you can’t see. PrivaMesh means it literally. There is no PrivaMesh backend, no relay, and no account database anywhere. The app’s only network dependency is a Solana RPC endpoint - and even that is swappable and self-hostable. This is what a genuinely decentralized messenger looks like.
Where your data actually lives
Instead of a server, the Solana blockchain is the transport. Every piece of your data has a concrete home, and none of them is a company’s database:
| What | Where it lives | How |
|---|---|---|
| Your messages | Solana transaction memos (on-chain) | Encrypted blobs in 0-lamport transactions |
| Your inbox | The Solana blockchain itself | Read via one-time stealth addresses |
| Your keys | Your iPhone Keychain only | Biometric-locked, never leave the device |
| Your contacts & history | Your iPhone only | Never synced, never uploaded anywhere |
| Your identity | A BIP-39 seed phrase you hold | Self-custodial keypair - no phone, no email |
| The "PrivaMesh server" | Does not exist | Only dependency is a swappable Solana RPC |
How a message travels with no server in the middle
To send, PrivaMesh encrypts your message, pads it to a fixed-size bucket, and wraps it in a 0-lamport Solana transaction - a transaction that moves no money, carrying your ciphertext in the memo field. It is addressed to a one-time stealth address. To receive, your device scans the chain for transactions to your stealth addresses and decrypts them locally. At no point does a PrivaMesh machine handle your message, because there is no PrivaMesh machine.
Why serverless equals private
A server is a single point of failure for privacy. It can be hacked, subpoenaed, or quietly instructed to log more than it should. It can go down and take your messages with it. It can be sold, and its data policy with it. Remove the server and every one of those risks disappears at once. There is nothing to breach because your messages are spread across a public chain as encrypted blobs only you can read. There is nothing to subpoena because no company holds your conversations. And there is nothing to shut down - as long as Solana runs, PrivaMesh runs.
Self-hostable by design
The RPC endpoint is the one piece that talks to the network, and you are never locked into ours. Point PrivaMesh at any Solana RPC, including one you run yourself, and the app keeps working. Nobody can cut you off, and no single provider sees all your traffic.
The honest trade-off
Serverless transport means messages ride real Solana transactions, so each one costs a tiny network fee in SOL. We think never trusting an operator is worth a fraction of a cent per message - and we’d rather state the cost plainly than hide it.
