Private. European. Finally intelligent.
The email built for the age of AI — a mailbox your agents can actually run, hosted entirely in Europe, and impossible to lose. The intelligence you want, without giving up where your data lives.
- Data stays in the EU
- Backed up & recoverable
- Open standards, no lock-in
You shouldn't have to choose.
Until now, email made you pick: private or intelligent, European or modern. Lettio is built to be all of it at once — because we run the whole stack ourselves.
Secure & European
Your mail lives on infrastructure we run in the EU — never shipped overseas, never mined, never used to train someone's model. Sovereignty built into the architecture, not promised in a policy.
Never lose an email
Every message is backed up and recoverable. Deleted something important by mistake? We bring it back — which most providers, free ones included, simply cannot do.
Yours, on open standards
Standard protocols, your own domain, full export. Bring everything, keep everything, leave whenever you want. No lock-in — we'd rather earn your stay than trap it.
Built for businesses that take security seriously.
Most providers ask you to trust a privacy page. Lettio is built so you don't have to — the guarantees are in the architecture and the standards, not the marketing.
Join the waitlist- Data hosted on our own servers in the EU
- Encryption at rest for every mailbox
- GDPR-ready, data-processing agreement on request
- No ads, no data mining, ever
- We never train AI on your mail
- Open standards — JMAP, IMAP, SMTP
- Modern authentication and 2FA
- SPF, DKIM, DMARC & MTA-STS done right
Email you can stop worrying about.
Your data stays in Europe
Hosted on servers we run in the EU. Data residency by architecture — not a setting that quietly routes elsewhere under load.
Nothing is ever lost
Continuous backups and one-click restore. Recover a deleted message, or a whole mailbox, long after it's gone.
AI that actually helps
Draft, triage and summarize, built right in — with the inference kept in Europe, not shipped to a foreign model.
Built for your agents
MCP-native from the ground up. Your AI reads, sorts and sends from a real inbox through one clean API — no middleman.
More than email
Calendar, contacts and files on the same private stack — a European workspace, not just a mailbox. Open protocols throughout.
We move you in
Full migration handled for you and a real person on support. Keep every message, change nothing, switch without the dread.
For your team — and for your agents.
The same European mailbox, whether a person opens it or an AI runs it.
Lettio Mail
You & your team
billed yearly · €4 month-to-month · everything included
- Your domain, your mailbox, EU data
- Backup & one-click restore
- Built-in AI drafting & triage
- Calendar, contacts & files included
- Migration handled for you
Lettio for Developers
AI you're building
then €19/mo · usage-based at scale · priced like infrastructure
- Spin up inboxes by API
- MCP server, agent-ready
- EU data residency for your users
- Webhooks & full programmatic control
- Usage-based — scales with you
The things you're probably wondering.
Is switching my main email risky?
No — we handle the migration for you. Every message, folder and contact comes across, your clients keep working, and because Lettio runs on open standards you're never locked in. If you ever want to leave, you take everything with you.
You're new — why should I trust you with my email?
Two reasons. First, open standards (JMAP, IMAP, SMTP) mean your mail is never trapped in a proprietary format. Second, everything is continuously backed up and recoverable, so you can't lose data — not even if you delete it by accident.
Why not just use Proton or Tuta?
They're great for privacy, but their encryption means no real AI and no agents — the inbox stays a black box. Lettio keeps your data in Europe and private, while letting an assistant and your own agents actually work with it.
Why not Google Workspace or Microsoft 365?
Because your data lives in the US, under US law. For a business that has to answer for where its data sits, that's a problem. Lettio gives you the modern, intelligent experience with your data kept in Europe on infrastructure we control.
How much does it cost?
Lettio Mail is €3 per mailbox per month billed yearly (€4 month-to-month), with backup, AI, calendar, contacts, files and migration included. Developers start free and pay for usage. Join the waitlist for a founding price that stays.
When can I actually use it?
We're building now. Join the waitlist and you'll be among the first invited in, at the founding price.
Be early to European AI email.
We're building Lettio now. Join the waitlist to get in first — with a founding price that stays.