Private. European. Finally intelligent.
Your own mailbox on open standards, hosted in Europe — with an assistant and agents that work under the same privacy guarantees as your mail.
- Data stays in the EU
- Backed up & recoverable
- Open standards, no lock-in
Until now, you had to choose.
Privacy or a real assistant. Open standards or AI. A mailbox that's yours, or one an agent can actually use. Lettio keeps all three — because we run the whole stack ourselves.
Private & European
Your mail lives on infrastructure we run in the EU — encrypted, never mined, never used to train a model. Sovereignty built into the architecture, not promised in a policy.
Yours, on open standards
IMAP, SMTP, JMAP, CalDAV — your own domain, full export. Bring everything, keep everything, leave whenever you want. No bridge, no lock-in.
Ready for AI
A built-in assistant and agents that work through the open MCP standard, under the same guarantees as your mail — and only ever send as you.
Give your assistant your inbox — safely.
Lettio speaks the open MCP standard, so your AI assistant and agents can work with your mail. Your mailbox stays private and hosted in Europe; which assistant you connect is your choice.
Read your inbox
- List and open recent messages
- Search the whole mailbox by sender, subject or text
- Read a full message, attachments included
- See folders, unread counts and what needs attention
Act on your behalf
- Reply in the same thread, or start a new one
- Send — always from your own address, never another
- Mark read or unread, flag and star
- Archive, move to a folder, or file to Trash
Sending is pinned to your own address, so an assistant can never send from a foreign mailbox. Connect it once; disconnect any time. See how to connect →
Email you can stop worrying about.
Private & European
Hosted on servers we run in the EU. Encrypted, no ads, never used to train a model.
AI & agents
A built-in assistant and agents over the open MCP standard — under the same guarantees as your mail, and only ever sending as you.
Open standards
IMAP, SMTP, JMAP and CalDAV. Your own domain, full export, no bridge, no lock-in.
Backup & restore
Every message is backed up. Recover a deleted mail, or a whole mailbox, long after it's gone — something most providers simply can't do.
Migration, handled for you
Moving from Gmail, Outlook or another provider? A real person migrates you across. Keep every message; change nothing on your end.
Calendar & contacts
Calendar and contacts on the same private stack, over open protocols. Everything in one place, nothing locked away.
Your data stays yours.
Private and European, on open standards you own — export whenever you like, in formats every mail client reads. We're independent, and built to last.
Join the waitlist- Hosted on our own EU servers
- Encrypted at rest
- GDPR-ready, DPA on request
- No ads, no data mining
- Never trained on your mail
- IMAP, SMTP, JMAP, CalDAV
- Modern auth and 2FA
- SPF, DKIM, DMARC, MTA-STS
€3 per mailbox. That's it.
One fair price for you and your whole team — assistant and agents included. Billed yearly, or €4 month-to-month.
- Your own domain and mailbox
- Assistant and agents included
- Backup and one-click restore
- Migration handled for you
- Team & shared-domain admin
- Priority support
30-day money-back guarantee · Building agents on email? For developers →
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.