What is FortNox Drop?

A one-time encrypted transfer tool. Send a message or file to one person. The link works once — when the receiver opens it, the session ends. Nothing is stored anywhere.

How the encryption works

The encryption key is in the URL fragment — the part after #. URL fragments are never sent to any server, including ours. Messages are AES-256-GCM encrypted before upload; files transfer peer-to-peer. Your plaintext never leaves your device.

Send a message

• Write your message in the Message tab
• Click Create Drop Link — message is encrypted and stored for up to 24 hours
• Copy the link and send it to the recipient — any channel works
• You can close the tab immediately — the link stays valid
• The recipient opens the link — message decrypts in their browser and is deleted from the server

Send a file

• Switch to the File tab
• Pick any file — it's encrypted before leaving your device
• Create Drop Link → share with recipient
• Both tabs must stay open during the transfer (peer-to-peer)

Smart receive buttons

When the receiver gets a message, FortNox Drop recognizes what it contains and shows the right action button automatically:

• Encrypted vault → Open in FortNox Vault
• Signed message → Verify in FortNox ID
• Plain message → Save as Vault note

One-time only

Messages: the link works once. When the recipient reads it, it is deleted from the server immediately. After 24 hours, unread drops expire automatically. Files: link stops working when the sender closes the tab. No replay, no history, no log.