Private by design, not by promise. QVU never holds your keys or sees your messages, today or when quantum computers arrive.
Join the waitlistOpens an email draft. You choose whether to send it; this site does not save your details.
See the difference between what you write and what our servers carry.
Hi Aoife,
I’ve attached the signed agreement. Please keep the terms between us until Friday.
Talk soon,
Mary
Showing what QuantumViva sees: sealed data only.
A design illustration of the privacy boundary, not a live product screen.
Your keys are made and kept on your device. They never reach QuantumViva. Our servers register accounts, show who is available and pass on sealed data they cannot open.
The information needed to run your account and connect you with the people you choose.
Your keys, messages, attachments, files, vault and recovery phrase.
Messages, attachments and the files you keep can remain private for years. Your email address stays the same; QVU works on top of Microsoft 365, Google Workspace or any email provider.
Write and attach as you do now. Only connected QVU users can open what you send.
Keep files on your computer, each with its own lock.
Short, verified conversations with the people you have connected with.
A record of who received what and when, which can't be quietly changed.
Encrypted messages can be copied today and kept until a quantum computer can unlock them. Experts estimate a 28–49% chance of one able to break today's encryption within ten years.
Source: Global Risk Institute, Quantum Threat Timeline Report 2025.
QVU protects messages and files with today's proven encryption plus NIST's new standards built to withstand quantum computers.
Set up QVU on Windows or Mac in about ten minutes. No new email address and no phone number.
You and each person you connect with confirm who the other is once using a short code.
Send from your existing email account. Files go in your vault, each with its own lock.
A Pair covers you and one other person. Add more people at any time.
We never hold your keys, so you get a recovery phrase instead. Lose your laptop, and your phrase and backup bring everything back on a new one. Lose your phrase and your devices, and nobody can get you back in. Not even us.
Protected messages only go to people you’ve connected with in QVU, so a mistyped or fake address can never receive them. If someone isn’t on QVU yet, they’re invited to join and connect with you.
No. Messages are sealed on your device before they’re sent, and only the people you’ve connected with in QVU can open them. Our servers only ever pass on sealed data.
Only what we hold: the basics needed to run your account. Your keys, messages and files never reach us, so they can’t be handed over.
No. QVU works on top of Microsoft 365, Google Workspace or any email provider.
Yes. QVU only delivers to people you’ve connected with. A Pair covers you and one other person. Anyone you write to who isn’t on QVU yet is invited to join and connect with you.
No. QVU doesn’t ask for one.
Your files stay locked on it. Restore your vault on a new computer from your recovery phrase and backup.
Yes. QVU runs on Windows and macOS.
QVU is in build. Join the waitlist for priority access.
Priority access when early access opens, and your first month free.
Join the waitlist for priority access when early access opens, and your first month free.
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