One Swiss Knife in the exact shape of your life.

Unsent Letters

A private unsent letters in one HTML file on your machine: no account, no cloud, no server to talk to.

Live · runs in your browser · no network

This is not a screenshot. It's the real tool, running right here: go on, put something in it.

Open the demo full-screen: /demos/unsent-letters.html

Forged into a knife, this tool ages with use: the blades you reach for wear soft, entries you tend keep their bloom, and the years travel with the file through every reforge.

Some letters do their whole job in the writing and would only cause trouble in the sending. Unsent Letters is the drawer for them: who the letter is to, the letter itself, and the date you wrote it. To the friend you lost touch with, the parent you could not argue with, your own self at nineteen — say it all, and let the page hold it.

KindTracker · keeps what you put in
CategoryRelationships
Weight1
Manual:

What it keeps

Standing facts

In ten years

Whatever you put in (To, Letter and Date) stays inside the file itself. There is no account to lapse, no plan to be sunset, no migration e-mail with a deadline in it. A decade of unsent letters entries is a decade of your own handwriting, kept in a document you can back up like any other.

If Offline.Ltd closes tomorrow, nothing on your machine notices. That isn't a marketing promise; it's simply what a file is.

Getting your data out

Export to CSV from inside the tool and open it in anything: a spreadsheet, another app, a text editor. Or keep the HTML file: it is plain, readable, and inspectable; you can open it in a text editor and see your own rows sitting there. No export queue, no "we'll e-mail you a link within 48 hours", no format that only one vendor can read.

Copy the file to a USB stick, a NAS, a folder your devices already sync. It runs on Windows, macOS, Linux, Android and iOS, online or off, because a browser is the only thing it ever needed.

Questions people ask

01

Why write a letter you never send?

Because the writing is where the untangling happens. Putting the words in order — addressed to the actual person — releases something that thinking in circles never does. Therapists have recommended the practice for decades.

02

Can anyone read my unsent letters?

No one. The tool runs offline in your browser, with no account, no cloud, and no server; the letters live in one HTML file on your own machine and never leave the page. Unsent means unsent.

03

Who do people write unsent letters to?

The estranged, the departed, the exes, the former bosses, and — surprisingly often — themselves at some earlier age. Anyone the conversation with never quite finished.

Go deeper on Unsent Letters

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Fits your knife at weight 1. Nothing here is final, Knife follows Life. Reforging within your tier is free, forever. Add it, drop it, reforge it later; the file stays yours either way.

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