Delta Chat
Privacy is not a feature. It’s infrastructure.
At Nuvon, we believe privacy should not depend on trusting a single company, a single server, or a single country.
That belief doesn’t stop at storage and compute. It includes how we communicate.
That’s why we run our own Delta Chat relay server—and why anyone can use it. The address for this relay is chat.nuvon.app and you can setup a new profile by clicking the link below or scanning the QR code, but first, download the app on your device.
What is Delta Chat?
Delta Chat is a messaging app that works on top of email.
No phone numbers.
No central account database.
No proprietary protocol.
If you can send an email, you can use Delta Chat. But unlike traditional email, Delta Chat looks and behaves like a modern messenger:
• real-time chat
• groups
• media sharing
• end-to-end encryption by default
The difference is architectural, not cosmetic. There is no central server that owns your identity.
What is a “relay server”?
In Delta Chat, a relay (also called chatmail) is simply an email server optimized for chat. It does not:
• read your messages
• index your contacts
• sell metadata
• lock you into a platform
It only delivers encrypted messages—nothing more. Running a relay is like running a mail server, except designed for people, not spam.
The important recent change: multiple relays, one identity
Delta Chat recently introduced multi-relay identities. This is the breakthrough. You can now add multiple relay servers to your profile at the same time.
Your identity is no longer tied to a single email address or server. Think of it like WireGuard, but for messaging.
If one relay goes offline, is blocked, or disappears, your contacts can still reach you through another one.
If you switch relays and send a message, your contacts automatically learn your new reachable address—without re-adding you, without friction.
Your identity survives:
• server outages
• censorship
• provider shutdowns
• even government seizures
That’s not a promise. That’s how the protocol works.
Why does Nuvon run a relay?
Because privacy is only real when infrastructure exists.
We already operate:
• EU-based cloud storage
• privacy-first compute
• self-hosted collaboration tools
Running a Delta Chat relay is a natural extension of the same principle.
Our relay is:
• open to the public
• interoperable with all other Delta Chat relays
• not a walled garden
• not tied to Nuvon services
You don’t need to be a Nuvon customer to use it. You don’t need to trust us with your data. That’s the point.
“But nobody I know is on Delta Chat”
This is the most common objection—and it’s based on how centralized messengers trained us to think. Delta Chat doesn’t work like WhatsApp or Signal.
You don’t need others to “join a network”. If someone has email, they’re already reachable.
They don’t have to switch platforms.
They don’t have to sign up anywhere.
They don’t have to convince anyone else.
They can keep using email. You can use Delta Chat. The bridge already exists.
“My data is already public, why should I care?”
Privacy is not about secrecy. It’s about control, asymmetry, and future risk. Three realities most people ignore:
- Information that seems harmless today may not be harmless later
- Aggregated metadata is often more revealing than content
- You don’t get to retroactively protect past conversations
Using privacy-respecting tools is not paranoia. It’s basic digital hygiene. You lock your door even if you’re not hiding anything.
This is not about hiding. It’s about resilience.
Delta Chat doesn’t promise anonymity. Nuvon doesn’t promise magic. What this offers is structural independence. No single company can:
• lock your account
• mine your conversations
• shut down your identity
That’s not ideology. That’s engineering.
Use our relay—or don’t. That’s freedom.
You can:
• use only Nuvon’s relay
• combine it with others
• move away later without losing contacts
Your identity remains yours. That’s what supporting privacy actually looks like.
If you want to know more about Delta Chat, here are some resources:
Privacy policy for the relay server
Applications
Info
Public code