What you can do with Letro
From verified first contact to the exported record — one Swiss platform for the whole exchange.
Send letters that prove themselves
Formal correspondence, end-to-end encrypted, with delivery and read receipts on a timestamped, tamper-evident record.
Know exactly who you're dealing with
Every account is a PostNumber, issued once after passport verification. No anonymous accounts. No impersonation.
Your clients don't need Letro
Address anyone by email. They open a temporary room, free, no account required. You keep the record.
Keep every case in one thread
Workspaces gather the letters, messages, files and calls for each mandate — one place, shared with the right people.
Group conversations
Encrypted threads for a team, a client or a matter.
Voice and video calls
Call from the conversation. The case stays in one place.
Encrypted file exchange
Documents travel inside the thread, never as attachments.
Pinned messages
Keep decisions and key files at the top.
Work from any device
Same account, same encryption, same record — everywhere you work.
Model your firm, not just chats
Departments, legal entities, teams and external counterparties, with roles, approvals and policy-driven workflows.
Produce the record in minutes
A timestamped audit trail of every exchange — retained ten years, exportable as evidence, in every plan.
Describe the workflow. Letro AI builds it
Describe the process — onboarding, approvals, correspondence — and Letro AI turns it into a structured, repeatable workflow you review and switch on.
From Swiss cloud to air-gapped
Shared Swiss infrastructure, an isolated homeserver, or entirely your own hardware. The product stays the same.
Compare deployment models →Shared infrastructure hosted in Switzerland. Running in minutes.
Your own isolated homeserver, run and maintained by Letro.
Your infrastructure, in your jurisdiction, up to fully air-gapped.
See it on your own cases
A 30-minute walkthrough on a real mandate — from first contact to the exported record.
- 01Bring a live mandate, anonymised if you prefer
- 02We run it end to end in Letro, with your team
- 03You leave with the exported evidence record