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Messagerie souveraine infogérée

Your sovereign, fully managed and secure email, because your messages belong to you alone!

Professional email hosted in Europe or on your own premises, beyond the reach of extraterritorial laws and hackers. Proven Open Source solutions, monitored and maintained by experts.

  • Managed sovereign hosting
  • Your data in France or Europe
  • GDPR-compliant operation
  • Independent open source
  • Anti-spam - anti-phishing
  • SPF, DKIM, DMARC configured
  • TLS encryption
  • Local backup included
  • Continuous updates
  • Availability & Reputation
  • Always exportable data
  • Expert support included

European cyber initiatives good practices

Your sovereign professional email from 29 € / month.

5 mailboxes, 150 GB of pooled storage, hosted under European jurisdiction. Free setup.
Starting at €29/month, billed annually. Additional mailbox: +€5/month.

With Gmail, Microsoft 365 or any solution that routes your data through the web, your emails are already no longer your private property. Contracts, quotes, client data, password resets: your emails are often the key to identity theft — and when they fall under a foreign jurisdiction, that jurisdiction can access them, or even shut down the service. A hard fact, as one of the American software giants admitted before the French Senate. Your emails are one of your most critical digital assets.

Our approach is radical, because — as ANSSI and cybersecurity authorities recommend — there is no room for compromise when you know that most cyberattacks start with an email. We have selected proven and Open Source software for interoperability. Your data is hosted on sovereign infrastructure in France or Europe, never under extraterritorial jurisdiction. We maintain, update and secure everything: nothing to worry about, and yet everything stays under your control.

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How we keep your email worry-free

A complete, reliable and fully managed professional email service. You keep control of your domain name and your data; we handle everything else: setup, security, updates, monitoring and continuous availability.

Your teams keep their emails, calendars and contacts, accessible everywhere and from any device — Android, iPhone, Windows, Mac or Linux — with no change to their habits. And because everything runs on open standards, you are never locked in. You can evolve your solution, switch provider or email client without rebuilding anything, and take your data with you whenever you want.

Our services

OpenSource Solutions handles the deployment, configuration and ongoing management of your email service. We set up your mailboxes and the records needed to route your mail, then continuously apply security patches, among others, as soon as they are released.

You have nothing to do: focus on your core business, with no disruption and no costly new skills to build in-house. Whether you are a freelancer, an SME, a non-profit or a public body, we adapt the solution to your constraints and GDPR obligations.

Far more than email: coordinating your teams

Depending on your needs, we deploy the best-suited solution: shared calendars and address books, group scheduling, room and resource booking, assigning the right people to the right cases. Your teams work together without stepping on each other's toes, and everyone sees what they need to see.

It all stays compatible with the tools your staff already know; Thunderbird, Outlook, iPhone, Android. This compatibility is your gateway: adopt what you need today, evolve tomorrow without disruption. And to anchor the transition for good, we train your IT department, your managers or your end users because a sovereign tool that is well mastered beats one that is merely endured.

Email that fits your organization

Essential

€29 /month

Billed annually - Free setup
  • 5 mailboxes, 150 GB pooled storage
  • Additional mailbox: +€5/month
  • Webmail, anti-spam, SPF/DKIM/DMARC, TLS
  • Updates and security patches included
  • Availability and reputation monitoring
  • Hosted on our servers or sovereign cloud
Get started

Collaborative

On quote

Tailored to your organization
  • Everything in Essential, plus:
  • Shared team calendars and contacts
  • Sync with Thunderbird, Outlook, mobile
  • Mailboxes and storage sized to your headcount
  • Training for your teams
Assess my needs

Full sovereignty

On quote

Your data within your walls
  • Everything in Essential, plus:
  • Server installed on your own premises
  • Full physical control of your data
  • No jurisdiction question at all
  • Deployment, maintenance and monitoring
Request a study

A sovereign ecosystem around your email

A sovereign email service does not stand alone: it relies on a whole ecosystem that secures it and guarantees your independence. Drawing on our experience with Open Source and the operation of critical infrastructure, we have selected and battle-tested every building block of this set. Backup, access control, password management, continuous monitoring: these services plug directly into your email to strengthen its resilience against both disasters and attacks.

And because regulation is tightening - GDPR, NIS2 - growing demands from insurers and clients, not being able to prove that you did what was needed costs you dearly, very dearly. An insurer that refuses to pay out, a client who takes you to court, a contract lost because your client demands guarantees you cannot demonstrate: these are risks that don't forgive. Each month, depending on your level of protection, we document the measures in place, the test results and the incident tracking in a maintenance and compliance report. Zero risk does not exist, but the day something happens, you have the proof, in black and white, that the right measures were in place to protect and control your client data, and that, on your side, what was needed was done. Here is a sample of the services that revolve around your email:

Offsite Backup
Encrypted offsite backup on private infrastructure in France, with documented restore testing. Learn more

Sovereign WireGuard VPN
Restrict access to your mailbox to your strict authorized addresses only, through an encrypted tunnel. Learn more

Password Management
Enterprise password vault to protect access to your email and your tools. Learn more



Take back control of your email — €29/month

Contact us to plan the migration of your email to a sovereign, reliable and fully managed solution.

Contact us!