A sovereign cloud still hands your data to someone. OxiMail doesn’t have to.
Mail, calendar, contacts, tasks, a web client and an AI assistant — the Microsoft 365 / Google Workspace set, run on your own infrastructure, in your jurisdiction. No US dependency. The operator can be you, and no one else. And if you have no ops team, we deploy it for you.
For organisations that can’t outsource their sovereignty.
Public bodies & administrations
Cantonal, communal, national — where data residency and independence from US hyperscalers is policy, not a preference.
Hospitals & health networks
Clinical data touches mail. Audit, retention, and on-premise or sovereign hosting are non-negotiable.
Universities & research
Federated identity, large account counts, a strong data-sovereignty stance.
SMEs — through our partners
Law firms, fiduciaries, medical practices: sovereign mail and collaboration, run by a trusted local partner.
A datacenter in Europe is not sovereignty.
Bleu runs on Azure. S3NS runs on Google. Delos runs on Microsoft. A “Swiss cloud” still puts your data in a hoster’s hands. In every case there is a third-party operator — and an operator can be subpoenaed, pressured, sanctioned. In 2025 a prosecutor’s mailbox was cut off under foreign sanctions. The lesson is not “pick a European datacenter.” It is: as long as someone else holds your data, your sovereignty depends on their goodwill.
Read the full argument: own vs rent →The mandate is here — and the migration has already started.
Public bodies across Europe are being told to leave the US hyperscalers, not asked. French administrations are moving off US collaboration tools; German data-protection authorities have ruled against Microsoft 365 in schools; a German state is migrating tens of thousands of workstations to open source; the EU funds alternatives through its Next Generation Internet programme; Switzerland tightened the FADP. The budget is allocated and the direction is set.
And the organisations already moving to Linux, LibreOffice and Thunderbird hit the same wall: the OS, the documents and the files have sovereign answers — mail, calendar and contacts do not. OxiMail is that missing answer.
Ten separate systems, collapsed into one.
Most organisations run a different product — and a different server, login and bill — for email, calendar, contacts, files, chat, tasks and more. OxiMail folds them into a single backend you operate. Available today: mail, calendar, contacts, tasks, a web client, file sync and an AI assistant. On a clearly-labelled roadmap: a file-server replacement, video and email security — never sold as shipped before they are.
Mail, calendar, contacts, tasks
The daily collaboration suite — modern and fast, on phones and desktops. Available today.
A web client your people open every morning
Workspace: mail, calendar, contacts, files and chat behind one sign-in. Available today.
An AI assistant, on your terms
Over your own mail and calendar — local, sovereign-EU or connected. You choose the jurisdiction. Available today.
Works with the tools you already use
Outlook, Thunderbird, mobile mail/calendar/contacts apps connect out of the box.
A CIO who must leave Microsoft goes looking. The shelf is nearly empty.
What a sovereign buyer actually finds today — counting only what each product ships, not what it promises.
| Calendar + Contacts | Files + Chat | Self-hosted | Architecture | ||
|---|---|---|---|---|---|
| Nextcloud | ∼ | ✓ | ✓ | ✓ | PHP |
| SOGo | ✓ | ✓ | — | ✓ | Aging |
| Zimbra | ✓ | ✓ | ∼ | ✓ | Java, troubled |
| Open-Xchange | ✓ | ✓ | ∼ | ✓ | C + Java, 7 services |
| Proton | ✓ | ∼ | ∼ | — | Cloud-only |
| OxiMail | ✓ | ✓ | ✓ | ✓ | JMAP, Rust, 1 binary |
The budget is allocated, the mandate is issued — and there is no other complete, self-hostable, modern sovereign suite.
One lean binary instead of a sprawling stack.
A traditional mail stack runs seven services and eats 10 to 18 GB of RAM. OxiMail does the same job as a single program in 2 to 4 GB. For the same mailboxes that means a fraction of the compute servers — and the electricity and cooling to match. (Storage scales with your mail either way; the saving is in compute, not your data.) A sovereign stack that also lightens your footprint — and helps you meet the EU Energy Efficiency Directive (2023/1791) and green-procurement criteria.
A small footprint, a clear jurisdiction, nothing hidden.
Made in Switzerland
Built by Activate sàrl in Geneva. A Swiss company, under Swiss jurisdiction.
FADP & GDPR by design
Your data stays in your jurisdiction, on infrastructure you control.
Zero US dependency
No hyperscaler underneath. Nothing in the stack can be compelled by a foreign order.
Open and auditable
The core is AGPL open source, built on open standards — no lock-in, inspectable by anyone.
And we deploy it for you
No ops team required: we install, harden, migrate and hand it over. You own and operate it.
We run it ourselves
Activate runs its own company mail and collaboration on OxiMail. We depend on it daily — we’d be the first to know if it dropped a message.
Owned, delegated, or deployed for you.
Have us deploy it
No ops team? We install, harden and train — you own and operate it afterward. A billed engagement, a sovereign result.
Services & deployment →Own it yourself
Public bodies, hospitals, universities, enterprises with a DSI. You run it on your own metal, your own keys. The operator is no one.
For institutions →Delegate to a local partner
An MSP or regional hoster runs it for you, in your jurisdiction. Sovereignty of jurisdiction, a trusted local operator.
For partners & hosters →Talk to us about a sovereign deployment.
Tell us your context — a migration in flight, an institution, a partner practice, or a self-hosted pilot. We answer fast.
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