Received and sent messages
Separate lists, local search, filters, and last-check information.
IN DEVELOPMENT · PRELAUNCH · INTERNAL TESTING
Datovka by LineSW for Czech data boxes on Mac
A free unofficial native macOS app in development for working with multiple Czech data boxes. Received and sent messages, encrypted local archive, personal deadlines, and email forwarding in one desktop interface.
Documented capabilities
What Datovka by LineSW is preparing
Exactly 11 capabilities below are taken from the safe handoff; internal testing is not production acceptance.
Multiple data boxes
Add, verify, edit, and remove accounts in separate environments.
Encrypted local archive
Store signed messages and delivery receipts with offline access to already archived attachments.
Portable backup
Password-protected bundle with account, environment, and signature checks.
Email forwarding
Prepares a draft in the system mail app; nothing is sent automatically.
Work deadlines and notes
Personal deadline, work status, and local note without calculating statutory deadlines.
Technical ZFO checks
Checks integrity, certificate chain, and timestamp within the implementation limits.
Sending messages
New message or reply with attachment checks and explicit send confirmation.
Consent-based automatic checks
Optional background checks after separate consent for each account.
History and archiving
Load available envelopes of older messages with limited ZIP extraction; attachments are not restored automatically.
Access protection
Optional password storage in macOS Keychain and safe temporary attachment copies.
Privacy and boundaries
A local client with explicit exceptions
Passwords can be stored in macOS Keychain and local metadata and archives are encrypted. ISDS communication uses HTTPS. Email forwarding or the experimental AI connector may expose content to their provider; exports may create unencrypted copies.
Requirements and status
macOS 14 or later · Apple Silicon and Intel
Build 0.5.5 (33) is in internal TestFlight testing. No public release or download is announced. The local-storage incident [messages:permission] remains HOLD; the app should not be treated as the sole copy of documents.
截图
Historical synthetic interface previews
Four sanitized QA build 31 previews. They are not current build 33 UI or real data boxes; public use remains HOLD pending owner approval.
价格
A free app is in development
No public download, release date, or checkout is available in this prelaunch phase.
FAQ
常见问题
Is the app finished?
No. It is in development and PRELAUNCH; no public release or download is announced.
Can fetching a message cause legal delivery?
Yes, fetching received messages may have that effect. Manual checks require confirmation; automation requires separate consent for each account.
Does it work offline?
Only with content already available locally. Login, synchronization, and sending require a network.
Is email forwarding automatic?
No. The app prepares a draft in the system mail app; the user reviews and sends it.
Is it a DIA or Česká pošta product?
No. Datovka by LineSW is not a product of DIA or Česká pošta and is not the official Datový trezor service.
Is it free?
A free app is in development. This page offers no checkout, license, or subscription.
LineSW
Support before public release
A public support contact and privacy URL will be added before release. Do not put sensitive data into this page.