Postboy

A little courier for letters from your favorite person.

Send a little letter from your phone. A storybook postboy brings it to your person's browser. Pair a mailbox at postboy.kumaw.at, then connect this extension using your mailbox connection code. When a letter arrives, Postboy walks onto the active webpage with an envelope addressed to you. Open it to read and reply, or keep it for later. Use the Postboy website to write a note, draw with your pen, or attach a photo or PDF. The extension brings the delivery, shows your unread count, and opens your shared mailbox. You can pause deliveries for an hour. Letters sent while your browser is closed stay in your mailbox. Courier entrances wait for an ordinary website when you are on a browser home, settings, or extensions page. Browser and operating-system restrictions can delay delivery. Postboy respects your device's reduced-motion preference. The extension needs access to ordinary websites to place its own courier there. It does not read their page text, collect browsing history, or record your activity. Letter contents are stored on your Postboy server and are not end-to-end encrypted.