Send a secret that burns after reading.
Write a note, get a link, share it. The note is locked in your browser before it leaves, and it destroys itself after one read or when time runs out. Need someone to send you a secret instead? Open a letterbox.
Write a note
Unread notes are wiped when this runs out.
Adds a second lock. Send it by a different route than the link.
How does it work?
- Locked on your deviceYour browser makes a random key and scrambles the note with AES-256-GCM before anything is sent.
- The key stays in the linkIt sits after the
#, a part of a web address that browsers never send to a server. - One read, then smokeWhen the note is opened, the server hands over the scrambled text and deletes it. Your friend's browser unlocks it.
Is this safe for real passwords?
It is much safer than pasting a password into chat or email, where it stays forever. The server only ever holds scrambled data and can't read it. For the best protection, add a passphrase and send it by a different route.
What if a link preview bot opens my link?
It can't burn your note. Opening only shows a "reveal" button, and the note is released only when someone presses it with the right key from the link.
Can I open the note on my phone?
Yes. After you light the fuse, press "Show QR code" and scan it with your phone camera. The code is drawn on your own device and is never sent to us or anyone else, so it's a quick way to move a Wi-Fi password or a recovery code from a laptop to a phone without typing it or emailing it to yourself.
Can I upload files?
No, text only, up to 64 KB. That keeps the service small, fast and hard to misuse.
What if I need someone to send me a password?
Open a letterbox. You get a write-only link to send them and a private pickup link to keep. They type the secret; only you can unlock it. There is a plain-words guide.