Digital sovereignty · Made in Germany
Your data. Your security.
Your workspace.
Email, files, office and video conferencing – seamlessly built into one, operated in German data centers. Souvera is the sovereign alternative to Microsoft 365: with a dedicated mail server for every workspace.
- GDPR-compliant, no third-country transfer
- Dedicated mail server per workspace
- Hosted exclusively in Germany
- One login for all applications
Souvera Shield
0 threats · inbox protected
One platform
Everything modern work needs
Souvera Workspace unites the tools of everyday work in one interface – no isolated solutions, no data silos, no second logins.
Full-featured email client with its own mailbox, aliases and shared team mailboxes – right inside the workspace, no second login.
Files
Secure file storage with versioning, share links and synchronization on desktop and smartphone.
Desk
Online office for documents, spreadsheets and presentations – real-time collaboration, compatible with Microsoft formats.
Link
Chat, video conferencing and screen sharing for teams – the alternative to Microsoft Teams.
Calendar & Contacts
Shared calendars, scheduling and central address books – synchronized across all devices.
Unified Search
One search across everything: emails, files, appointments and contacts – one shortcut, all results.
Seamlessly integrated
Not a toolbox. One whole.
At Souvera, email is not a bolted-on extra – it is part of the core. All modules interlock, and you feel it with every click.
One login for everything
Sign in once – mail, files, office and conferences are instantly available. Single sign-on is the standard, not an add-on.
Email as part of the whole
Attachments go straight into file storage, meeting invitations into the calendar with one click, recipients come from the central address book.
Everything findable
The unified search finds emails, files and appointments at the same time – without switching between applications.
A mailbox that moves with you
The integrated mail importer fetches your old emails from your previous provider – migration without data loss and without downtime.
The three Souvera apps
Three apps. One signature.
Souvera extends the workspace with three deeply integrated applications – for administration, communication and security.
Souvera Central
The central control hub for administrators: users, mailboxes, groups, licenses and settings – all in one place, delegable and without a command line.
Souvera Mail
The full-featured mail client inside the workspace: a personal mailbox per user, seamless single sign-on, migration import wizard and shared team mailboxes.
Souvera Shield
Mail security in the user's hands: personal spam quarantine, white & blacklists – plus professional mail reputation management for administrators.
See for yourself: we'll show you Central, Mail and Shield in a personal live demo.
Architecture
Strictly separated. Consistently sovereign.
Souvera is not a shared multi-tenant cloud. Every workspace is its own, fully isolated environment – all the way down to the mail server.
A dedicated mail server per workspace
Every Souvera instance gets its own dedicated mail server. No shared mailbox systems, no neighborhood effects from other customers.
Complete data separation
Users, mailboxes, files and configuration are strictly isolated per customer – technically enforced, not just organizationally promised.
Hosting in Germany
Operated exclusively in German data centers, under German and European law. Your data stays here.
Workspace · Customer A
Workspace · Customer B
No shared infrastructure between customers
Souvera AI: intelligence that never leaves your data behind.
The next step of sovereign work: an integrated AI assistant based on local language models – operated in the same protected environment as your workspace.
Souvera AI is under development and will be made available to existing workspaces as an extension.
Local language models
The AI runs on dedicated infrastructure in Germany – not with US providers. Your content is never used for training purposes.
Privacy by design
Whatever you entrust to the assistant stays in your environment. No third-country transfer, no foreign clouds, full GDPR compliance.
Fully integrated assistant
Summarize texts, draft emails, retrieve content – the assistant works directly inside Mail, Files and Desk.
Why Souvera
Working sovereign, in Germany
Versatile
Effortlessly adapt your digital work environment to your requirements. Whether in the office, on the road or working from home – work the way that suits you best.
Independent
Keep full control of your data, processes and ways of working – without depending on international cloud corporations or foreign jurisdictions.
Risk-free
Souvera reliably protects your sensitive company data from unauthorized access and data loss – according to the highest German security standards.
Reliable
Stability, security and maximum availability: your work environment runs dependably – and your data is in the best hands.
The comparison
Souvera or US cloud?
Functionally on par – uncompromisingly different when it comes to sovereignty.
| Criterion | Souvera Workspace | Typical US cloud (e.g. Microsoft 365) |
|---|---|---|
| Data location exclusively in Germany | ||
| GDPR-compliant without third-country transfer | only with additional agreements | |
| Independent of the US CLOUD Act | ||
| Dedicated mail server per customer | ||
| Email, office & video conferencing integrated | ||
| Open standards & full data portability | limited | |
| Transparent per-user pricing | complex licensing models | |
| Personal support from Germany |
Comparison based on publicly available information, as of June 2026. Microsoft 365 is a trademark of Microsoft Corporation.
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FAQ
Frequently asked questions
What is Souvera Workspace?
Souvera Workspace is a complete digital workplace from Germany: email, file storage, online office, chat and video conferencing in one interface – operated GDPR-compliant in German data centers, as the sovereign alternative to Microsoft 365.
How is Souvera different from Microsoft 365 or Google Workspace?
The decisive difference is sovereignty: your data resides exclusively in Germany, is subject to German law and is not exposed to the US CLOUD Act. In addition, every workspace gets its own dedicated mail server – a strict separation that the big US providers do not offer.
How does migration from my current provider work?
Very simply: the integrated import wizard in Souvera Mail fetches your existing emails directly from your old provider via IMAP – including all folders. The import runs in the background, and your old provider's credentials are discarded immediately after the start.
What does "a dedicated mail server per workspace" mean?
Every Souvera instance receives its own dedicated mail server – no mailbox system shared with other customers. This increases security and deliverability and ensures that your mail infrastructure belongs to you alone.
Who is Souvera suitable for?
For companies of any size, law firms, associations, educational institutions and public bodies – wherever data protection and independence matter. Souvera scales from a single user to large organizations.
Can I use Souvera with Outlook, Thunderbird or Apple Mail?
Yes. Using combined app passwords you can connect any common client via IMAP/SMTP – including calendar and contacts (CalDAV/CardDAV). One app password covers all services.
Ready for digital sovereignty?
Get a non-binding consultation or start right away with your own Souvera Workspace.