Aurisse Mail · Private email, post-quantum, Switzerland

I

The seal

Mail between Aurisse members is encrypted on the sender's phone and opened on the recipient's. Two ciphers at once: ML-KEM-1024, chosen by NIST for the quantum era, and X25519, the cipher the world trusts today. Signed twice as well, ML-DSA-65 and Ed25519. Breaking one is not enough.

Your phoneWrites, encrypts, signs

Aurisse, SwitzerlandHolds the sealed envelope. Cannot open it.

Their phoneChecks the signature, opens it

KeysMade in your phone's secure hardware during setup. Never uploaded, never escrowed, never ours.

ServerStores envelopes and a sealed archive. No plaintext, no subject lines, no search index of your life.

VerificationEach contact's key is pinned. If it ever changes, you are told before you write.

II

Private even with Gmail and Outlook

Most of the world does not use encrypted mail. Write to them anyway. Your message travels as a secure link that opens in their browser and is decrypted there, by a key that was never on our server. They can reply through the same page, sealed to you alone. Add a password you tell them another way, and set how long the link lives.

Arriving mailMail that reaches us unencrypted is sealed to your keys the moment it lands. The plain copy is gone before anyone could read it.

Verified deliveryDANE, MTA-STS, DKIM, SPF and DMARC. Ask for TLS-only delivery and a message that cannot travel encrypted comes back to you instead of going out in the clear.

Away replyThe one thing the server reads: the away message you choose to leave there. Sent once a day per sender, never to lists.

III

The mailbox

Everything a modern mailbox does, without tracking. A native app, noir and gold, that opens with your fingerprint and locks itself when you walk away; the same mailbox in your browser, opened with your passphrase.

ConversationsThreads, pinned on top, muted when you like.
Star, label, importantYour own labels. Swipe to archive or delete.
Snooze and send laterTomorrow morning, the weekend, or a time you pick.
Undo sendA moment to take a message back.
Writes like a documentBold, italic, colour, highlight, lists, quotes, alignment, links, templates.
AttachmentsUp to 25 MB each, previews inline, saved where you choose.
Search that understandsfrom:, to:, subject:, is:unread, has:attachment, and the words inside.
Locked by designFingerprint or PIN. Screenshots blocked. Remote images never load. Nothing in a message ever runs.

IV

Side by side

What the others do with your mail is their business model. What we do is hold a sealed envelope.

	Aurisse Mail	Gmail	Outlook	Proton Mail
End-to-end encryption between members	Yes, post-quantum	No	No	Yes, OpenPGP
Post-quantum ciphers today	Yes	No	No	No
Encrypted mail to anyone, with reply	Secure link, sealed reply	No	No	Password-protected link
Keys made and kept on your device	Yes, secure hardware	No keys	No keys	In the browser or app
Mail scanned for advertising or profiling	Never	Profile-based ads in the free tier	Ads in the free tier	No
Remote images	Never loaded	Loaded through a proxy	Blocked by default	Blocked by default
Phone number to sign up	Never	Often required	Often required	Sometimes required
Where it lives	Switzerland, our own servers	United States	United States	Switzerland

As published by each provider for their consumer services, November 2026.

V

Create your address

Free to start. No phone number, no personal details, no card. Choose the name, take the code, finish on your phone in a minute.

1
Install Aurisse Mail, or open it hereOn your Android phone, from this download (Android 10 or newer; it updates itself, checked against the Aurisse signature). Or finish in the browser at mail.aurisse.ch/app.
2
UnlockFingerprint, face or PIN. The same lock guards your keys from then on.
3
Type your name and the codeThe keys are made on the phone in that moment. The address is yours.

VI

Questions

Is it free?

Yes, to start. Every address comes with a mailbox and a daily sending allowance that covers normal correspondence. Larger allowances and more storage will be offered as paid tiers; nothing you have is taken away.

What if I lose my phone?

Your keys live in that phone's secure hardware, so a lost phone cannot be read by whoever finds it. Keep a second device signed in, or your archive is as gone as the phone. We cannot recover it for you: that is the point.

Can I use it on a computer or an iPhone?

Yes, in any browser at mail.aurisse.ch/app: the same mailbox, opened with a passphrase you set in the phone app under Settings, Web access. Your keys are unsealed in the browser tab and gone when you close it; nothing of your mail is kept on the computer. An iPhone app is being built on the same engine.

Can I bring my own domain?

Not yet. Addresses are at aurisse.ch. Custom domains are planned for the paid tiers.

What can Aurisse see?

That a sealed envelope of a certain size arrived for a mailbox, and when. For mail from outside, the headers it came with until it is sealed, which takes a moment. Never the words, never the attachments, never a search index. The server's own code is kept small so this stays true.

Who is behind it?

Aurisse, the Swiss maker of the Aurisse private messenger, Aurisse VPN and Aurisse Browser. One company, one protocol family, our own servers. aurisse.ch