Privacy

Last updated 2 July 2026

Eleven is built so that your conversations belong to you and the people you're talking to — not to us and not to whoever runs the server. Here's exactly what that means in practice.

What only you and your recipients can read

Your device encrypts each message before it's sent and decrypts it on arrival. The server stores and relays only ciphertext it has no way to open. End-to-end encrypted, and never visible to the server, are:

• the text of every message;
• attachments, including their file names;
• the sender's name as carried inside each message;
• group names and photos.

What the server necessarily sees

To deliver messages, the server has to know some things — but never their contents. It can see:

• Who shares a chat with whom. The server routes messages to a chat's members, so it knows the membership of each chat.
• Members' screen names. The roster stores the display name each person chose, so people can recognise each other.

It never sees your messages, your private key, or the keys that decrypt a chat — those exist only on your devices. So a stolen copy of the database reveals who talks to whom and by what name, but not a word of what was said.

What we don't do

• No analytics and no tracking — first-party or third-party.
• No advertising, and no selling or sharing of your data.
• No accounts, emails, or phone numbers. You join with a secret link.

Link previews

If you post a web link, the server fetches that page once to build a preview card (title, description, thumbnail). In that one moment it sees the URL you posted — never the rest of your message. This is the single exception to the rule above, and previews can be turned off.

Notifications

Push notifications are delivered as ciphertext and decrypted on your own device, so the notification service (and we) can't read them either.

Keeping and losing data

Messages live on the server only as ciphertext, and each chat is a self-contained instance. If you lose your device with no backup or "add a device" link, the keys — and any history only you could read — are gone, because we never had them.

Children

Eleven is made for families to use together. It collects no personal information beyond the display name a member chooses, and there are no ads, feeds, or contact from strangers.

Contact

Questions about privacy? Email privacy@elevenmessenger.com.

This page describes how the app works today and is written to be honest, not to be legal advice.