One matter, one dossier, one record
Contracts, evidence and filings exchanged in real time — encrypted end to end, with privilege and the record intact.
An encrypted channel between a firm and its client
Contracts, evidence and filings move inside the matter they belong to, not through an inbox.
Every delivery carries a timestamped record of who sent what, to whom and when — the record a firm can still rely on years later.
Video Library
Jun 2026
Julia
ENCRYPTED
Animation: a lawyer attaches three documents in a Letro chat and sends them. They travel end-to-end encrypted to the client’s phone and arrive as a letter with attachments. Illustrative example with fictional names.
From first draft to an exportable delivery chain
Open a Dossier for the matter
Add the client and any co-counsel as verified Principals.
Exchange documents in the thread
Drafts, signed versions and evidence travel encrypted, attached to the conversation they belong to.
Control who sees what
Access follows the Dossier. When a matter closes, access closes with it.
Export the record
Produce the delivery chain for a matter as evidence, timestamped and tamper-evident.
Why matter files belong here
Confidential by construction
Content is encrypted on the sender’s device and hosted in Switzerland. Neither Letro nor the homeserver can read it.
Structured, not scattered
Each client and each matter has its own Dossier, so every document is traceable to a conversation.
Proof when it is needed
Delivery and receipt are timestamped in a tamper-evident chain, exportable when a court or counterparty asks.
No friction for clients
Clients join from their phone with a verified PostNumber. No portal to explain, no password resets to support.
Discuss your deployment model
Standard rollout, private infrastructure, or stricter residency and isolation. The evidential foundation is the same.