Postkey: Vault, Files & Chat

Postkey shares files by a link that expires, keeps what should stay in a private vault and opens a live chat with a video call and screen sharing. Send holiday photos to your family, a contract to your tax office or a video to a friend with a link that stops working after the time you pick. Everything is encrypted on your device before upload; the server stores your files, notes and their names only in encrypted form.

SHARE FILES BY LINK
Put photos, videos, documents or a ZIP into a card, tap Share and send the link by chat or email. The recipient needs no account and no app, only a web browser. Photos, videos, music and PDF, Word and Excel files open right there.
- The link works for 1 hour up to 1 year
- You choose how many times it can be opened
- An optional password protects the link
- View only by default: no download button, unless you allow it
- Share a whole card or just one file from it
- Change the time and the number of opens later, or end the link at once
- Shared lists every card with a live link

A PRIVATE VAULT
The Permanent vault keeps cards until you delete them, like a wallet you always have with you: scans of your ID, contracts, receipts, recovery codes, private photos and notes. A card holds a title, a text and files. In the Temporary vault every card has a time from 1 hour to 1 year and disappears with its files when the time is up. Logins, Wi-Fi passwords and PINs live as encrypted notes next to your files; a hidden card shows only its title in the list. Deleted cards go to the trash first.

LIVE CHAT AND VIDEO CALL
Start a Live chat and send its link. The other person joins in a web browser, without an account or an app, once you let them in. Texts and files are encrypted end to end. From the chat you can start an encrypted video call or show your screen, and stop it with one tap. Show my screen also works on its own: a link shows your screen live, and you see who watches.

FIND AND OPEN EVERYTHING
- A bar for the Temporary vault, the Permanent vault, Favourites and Shared
- A gallery of your photos, videos and documents
- Videos start while they load, music plays with controls on the lock screen
- PDF, Word and Excel preview on the device, ZIP archives as a folder tree
- Search runs on your device and finds texts, titles and file names

GETTING THINGS IN
Pick files or photos, paste text or an image, share into Postkey from another Android app, or use the home screen widget and the quick settings tile.

SECURITY
- End-to-end encryption with AES-GCM 256 on your device, with a key of its own for every file
- Your password does not leave the device; the sign-in proves it without sending it
- Share links carry their own key after the # sign, with an optional password
- Sign in with your password or a passkey; two-factor sign-in with an authenticator app or a security key; a Recovery key for your data
- Fingerprint unlock sealed in the Android Keystore, app lock and Lock now
- A list of devices and sign-out of the others
- The app runs its own code from the signed app, not the server

ADS AND ANALYTICS
The current version of Postkey contains no ads and no analytics SDKs.

ACCOUNTS
Sign up with your email address and a code, or with Google. A free account currently has limits on notes and storage, shown in the app.

Some features may be available only with a paid plan or as an in-app purchase, now or in the future. The app shows this, with the price, before anything is charged.

Privacy policy: https://www.sortia.de/datenschutz/#box
By Sortia Labs, sortia.de