Sailboat with groupios Mare Cloud spinnaker on the sea

Your digital sovereignty. Made safe.

Email security and data sovereignty - safe under German sails

While US cloud services cut the anchor chain on your data sovereignty, groupios Mare Cloud offers email security, encryption, and backup - fully hosted in Germany, GDPR-compliant, and free from the CLOUD Act.

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The threat landscape

Email today isn't just a communication channel. It's a target.

Phishing and CEO fraud

Spoofed sender identities deceive employees. Without gateway checks and DKIM/SPF validation, the attacker stays invisible - until it's too late.

Unencrypted communication

Business-critical emails travel in plaintext through third-party infrastructure. Anyone without encryption sends contract data like a postcard.

Data loss and ransomware

Classic backups don't protect against encrypted attacks that silently persist for weeks. A central backup is therefore a central weak point.

CLOUD Act and US dependency

Microsoft 365® and Google Workspace® protect your infrastructure - but not your data. US authorities can demand access at any time. No exceptions.

The uncomfortable truth: email communication is a business risk today - not an IT topic. And anyone who doesn't address it today risks data loss, compliance penalties, and losing control of their company tomorrow.

The Solution

One platform. Complete control.

groupios Mare Cloud combines email security, S/MIME encryption, and Multi-Node Backup into one integrated platform - operated in Germany, with no external dependencies.

We call it the digital harbor: a place where your data cargo arrives safely, is protected, and only leaves the ship once you release it. No foreign captain. No unfamiliar waters.

Whether as a fully managed cloud service or an on-premises installation in your own infrastructure - Mare Cloud fits into any security strategy. The decision is yours.

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groupios Mare Cloud — Your platform

Email Security Gateway
S/MIME encryption + certificates
Email archiving (GDPR + GoBD)
Cloud2Cloud Backup (M365®, Google®)
Multi-Node Backup with no single point

Three ways to groupios - your decision

Choose your waters.

Three paths to digital sovereignty - depending on your requirements, your infrastructure, and your crew.

RECOMMENDED!

Mare Cloud

Security as a managed service

Fully managed security solution in a German data center - ready to go instantly, scalable, with no infrastructure of your own.

Operated exclusively in Germany / the EU
No CLOUD Act, no US access
Quickly implemented, continuously maintained
Monthly billing, no CapEx

Everything under your own sail

On Premises

Maximum control

Run the security solution in your own infrastructure - ideal for public authorities, critical infrastructure operators, and organizations with the highest requirements.

Full data control, no external access
Integration into existing IT environments
Independence from external platforms
Suitable for NIS2 and critical infrastructure compliance

Always by your side

Partner

Full control in your own infrastructure

The groupios Email Security Gateway enables secure, central S/MIME implementation directly in your own infrastructure - ideal for public authorities, critical infrastructure operators, and the highest security requirements.

Full data control, no external access
Integration into existing IT environments
Central certificate management in-house
Suitable for NIS2 & critical infrastructure compliance
Protection from malware, ransomware & spam

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Act now - here's why

The sea is getting rougher. Your harbor should be calm and safe.

Three developments make digital sovereignty a strategic necessity in 2025 - not an option.

58% more attacks

The number of successful email-based attacks on companies has risen sharply. AI-generated phishing is barely detectable anymore.

Regulatory pressure from NIS2

NIS2, GDPR, and GoBD are tightening requirements for backup, archiving, and encryption. Ignorance doesn't protect you from fines.

Geopolitical risks

US cloud providers are subject to the CLOUD Act. On request from US authorities, they're required to hand over data - regardless of server location.

Anyone without a holistic security strategy today risks losing control, data, and business continuity tomorrow.

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Mare Cloud speaks your language.

Executive Management

Digital sovereignty is a leadership issue.

As a managing director, you carry responsibility for data protection, compliance, and your company's business continuity. A data breach isn't just an IT problem - it's reputational damage.

Mare Cloud gives you control back: fully in Germany, demonstrably GDPR-compliant, with no dependency on US services.

Clear compliance evidence for auditors
No liability risk from CLOUD Act exposure
Monthly billing with no investment risk
Managed service - no internal effort

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What decision-makers care about

€4.5 million average cost per data breach
72 hours GDPR reporting deadline after an incident
91 percent of all cyberattacks start with email

IT Decision-Makers

Less effort. More control.

As an IT decision-maker, you know: email security is complex, time-consuming, and critical in an emergency.

Mare Cloud takes operations off your hands - and leaves you in control.

Central management of all security modules
Automatic S/MIME certificate management
Multi-Node Backup with no single point of failure
Seamless integration into existing systems
Dedicated VMs or your own server possible

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The architecture at a glance

3 tiers cloud account / dedicated VM / dedicated server
API-ready integration into existing IT environments
DE-hosted server location exclusively in Germany

Public Sector and Critical Infrastructure

Sovereignty isn't optional. It's mandatory.

Public authorities, cities, municipalities, and critical infrastructure operators face the highest requirements for data protection and failure resistance.

Mare Cloud meets these requirements - with no compromises.

On-premises operation in your own infrastructure possible
NIS2- and BSI-compliant architecture
Audit-proof email archiving per GoBD
No access by foreign authorities

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Ideal for

Public authorities and administrations
Cities and municipalities
Critical infrastructure operators (energy, water, health)

Resellers and Partners

Grow with us. Regional. Digital. Sovereign.

As a certified groupios partner, you offer your customers a made-in-Germany solution with genuine differentiation potential - and a strong margin structure.

Certification program with training
Co-marketing and sales support
White-labeling options available
Attractive partner margins

Become a partner

Partner benefits

Regional exclusive territories possible
White-label options for your own brand
Growing market German IT security +18% p.a.

What decision-makers want to know…

Mare Cloud brings all security solutions together in a single platform.

Combine our various building blocks for maximum data sovereignty.

Email Security Gateway

Protection from spam, malware, and ransomware – with automatic S/MIME encryption and central certificate management.

Discover the gateway

S/MIME Encryption

Legally compliant S/MIME encryption with central certificate management – automated, with no effort for users.

Discover encryption

Email Archiving

Audit-proof archiving compliant with GDPR and GoBD – legally compliant long-term storage for all your previously encrypted emails.

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Cloud2Cloud Backup

Completely vendor-independent backup, for example of Microsoft 365®, OneDrive®, Teams®, SharePoint®, Gmail®, and Google Drive®.

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Multi-Node Backup

Maximum resilience through distributed backup architecture with no central point of failure – ideal for business-critical data, for example.

Discover the backup strategy