quantum.

A LITTLE CLOSER

Make room
for a conversation.

Your inbox, on your terms. Share a contact link and let someone say hello—no download or wallet required.

Use at least 16 characters. This phrase protects your saved identity and history on this browser. We cannot reset it.

Before you start

Keep your phrase and browser data safe. Clearing this browser’s storage can lose your identity and messages; a phrase alone is not a cross-device backup.

Messaging uses an experimental post-quantum protocol. It has not completed an independent security review. Verify a contact’s fingerprint before sharing sensitive information.

A little room for a hello.

Share a link. Start a conversation.

Choose a conversation to begin.

A small hello.

Only the public contact reference is used. No keys go into this link.

Text only until they accept. Up to 2,048 UTF-8 bytes.

Your space.

Anyone with this link can send a first hello. Your messages and unlock phrase are not part of it.

Delivery and saved history

First hellos expire after seven days. Undelivered messages are held for up to 30 days; acknowledged delivery copies for seven days. Files follow their message’s delivery lifetime. Unsent uploads expire after one day.

Your protected history stays in this browser. Delivery expiry does not erase it. Keep your unlock phrase and browser data safe.

Always optional. QWallet opens separately; messenger does not create, sign or fund a wallet.

This conversation.

Contact fingerprint

Compare the full fingerprint through another trusted channel. A display name alone is not a verified identity.

A fresh start, if needed.

Keep this conversation’s history and your identity. Start a new encrypted conversation using a new contact key. The other person must accept again.

ALWAYS OPTIONAL

A wallet, when you want one.

Open or create your QWallet. Your connected wallet and quantum key stay there; messaging never needs a wallet.

Setup can require network fees. Review every deployment, backup and approval in QWallet. Opening it does not verify activation here.