Send a message or file
Open a device or room. Type a message, choose Send file, or drop a file onto the conversation.
Save files you need
A received file must pass its integrity check before you can save it. Verified files show SHA-256 ✓. A failed check offers a retry. Choose Save before closing the browser or before a server copy expires. With streamed relay downloads, Save fetches the verified file again, so the server copy must still be available.Retry an interrupted transfer
Gone means the needed copy is no longer available. Ask the sender to send it again.
How long server copies last
The relay is a temporary delivery buffer. By default, an item becomes unavailable when the first applicable condition is reached:
The app shows an expiry countdown. Expired items cannot start another upload or download. An already-open download may finish. Disk cleanup runs every minute by default, but can be delayed.
Capacity warnings
The app warns online participants when a file or text budget reaches 80%. If space is needed, expired items are removed first, then the oldest completed pending items of the same kind. Affected online participants receive a notice. Files and text have separate budgets, so a full file buffer still leaves room for chat. Active uploads and downloads are protected from capacity eviction. An item that cannot fit is rejected. Operators can adjust the capacity limits. Copies already on your device are not removed by server cleanup.Message yourself
Open This is you in Devices to send encrypted notes or files to your browser identity.- Use the same browser profile to recover them after a reload.
- Reconnect within 24 hours of going offline.
- Each item has a 3-day maximum age and can be removed by capacity cleanup.
- Clearing your browser identity prevents decryption. Server restarts erase these copies too.