groupios On Premises – Extended Groupware Appliance (EGA)

The on-premises communication platform for your digital sovereignty.

The groupios Extended Groupware Appliance (EGA) was specifically designed for public authorities, municipalities, and organizations that operate their communication infrastructure entirely on-site while ensuring the highest requirements for data protection, availability, and digital sovereignty.

On-premises – in your infrastructure
Made in Germany
GDPR-compliant
Native Outlook integration
ActiveSync for smartphones and tablets

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Workstation with groupios Groupware on two monitors

Microsoft 365® vs. groupios Groupware (EGA) on-premises

Comparison of two deployment models. On the left, Microsoft 365® as a cloud platform: applications sit in a cloud, below it international data centers, updates by Microsoft, data outside your own infrastructure, ongoing license costs, and dependency on the internet and cloud. On the right, groupios Groupware EGA on-premises: a server in your own building, below it data stays within your organization, updates and maintenance by you, independence and digital sovereignty, fully customizable, and no dependency on the internet and cloud. Both sides show the same devices with their respective client.

Communication isn't a cloud service - it's critical infrastructure.

Typical cloud platform / example: Microsoft 365®: Operations: International cloud infrastructure, Data: Stored outside your own infrastructure, Updates: Timing and changes decided by the provider, Dependency: Tied to platform, provider, and licensing models, Customization: Standardized services and features, Cost: Ongoing, user-based license costs, Administration: Within the cloud provider's constraints, Availability: Dependent on internet access and external cloud services. groupios Groupware EGA – on-premises: Operations: In your own IT infrastructure, Data: Stays entirely within your organization, Updates: You determine timing and maintenance windows, Independence: Your own platform, developed in Germany, Customization: Adaptable to your infrastructure and requirements, Cost: Predictable investment instead of user-based cloud licenses, Administration: Full administrative and configuration sovereignty, Availability: Operated independent of external cloud services.

Modern collaboration isn't created by new clients, but by a platform that integrates and connects every available device.

Work where you want. Communicate the way you're used to. Emails, calendar, contacts, and tasks - on every device. The groupios Extended Groupware Appliance (EGA) connects Outlook, web browsers, and mobile devices in one central groupware solution. Your benefits at a glance: Access in the office, at home, and on the go, Outlook, browser, and mobile devices, Emails, calendar, contacts, and tasks, Fully installed on-site, Your data stays under your control. Thanks to integrated support for Microsoft Outlook®, the advanced WebClient, and ActiveSync for smartphones and tablets, every user works with their familiar client. All data is synchronized in real time, securely, centrally, and entirely within your own infrastructure.

Whoever controls their communication controls their company.

Email

Personal mailboxes, smart folders, tag management, and rule-based workflows ensure structured, efficient communication.

Calendar

Personal and shared calendars make scheduling, resource management, and cross-team collaboration easier.

Contacts

Central contact management with groups, shared address books, and GDPR-compliant data handling.

Tasks

Tasks with due dates, attachments, and email integration ensure transparent processes.

Notes

Digital sticky notes for ideas, information, and follow-ups - color-codeable and flexibly organized.

Outlook & mobile

100% native Outlook connection with no add-ons, plus ActiveSync for smartphones and tablets.

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Designed for the permanent operation of critical communication infrastructure.

On-premises. Secure. Scalable. Made in Germany

Outlook Microsoft Outlook (2016 and later)
WebApp Browser-based access
Smartphone iOS / Android (ActiveSync)
Tablet iOS / Android (ActiveSync)
Thunderbird Email client (IMAP/POP3)

MAPI over HTTP (native Outlook)
ActiveSync (mobile devices)
IMAP / POP3 / SMTP (standard clients)

groupios Extended Groupware Appliance (EGA) Highly available

Mailbox storage

Node Worker 1
Node Worker 2
Node Worker 3

Database User data, emails, calendar, contacts, tasks, notes
Storage Files, attachments, backups

Architecture diagram of the Extended Groupware Appliance: Outlook, WebApp, smartphone, tablet, and Thunderbird access the highly available EGA via MAPI over HTTP, ActiveSync, and IMAP, POP3, and SMTP. Inside it, a mailbox storage with node workers 1 through 3, below that database and storage.

Why groupios?

Choosing the right communication platform today is a strategic decision that goes beyond pure technical requirements. It touches on digital sovereignty, security requirements, and long-term independence. The groupios Extended Groupware Appliance offers a modern on-premises solution that meets exactly these criteria, developed specifically for public authorities, municipalities, and demanding organizations. Ring graphic "On-premises. Under your control." with six segments: made in Germany, Outlook stays Outlook, long-term investment security, maximum control, designed for critical infrastructure, digital sovereignty.

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Modern collaboration doesn't happen in the cloud. It happens wherever you keep control.

The most important questions before an investment decision….

Why should public authorities and municipalities use on-premises groupware?

Public administration organizations bear responsibility for particularly sensitive data. An on-premises solution ensures full control over infrastructure, data handling, and security measures, and thereby makes a significant contribution to achieving digital sovereignty.

Do employees have to change their usual way of working?

No. Microsoft Outlook® continues to be natively supported, as does ActiveSync for mobile devices. Employees can keep using their existing clients with no changes.

Can groupios Groupware be integrated into existing IT infrastructures?

Yes. The EGA supports common protocols such as MAPI over HTTP, ActiveSync, IMAP, POP3, and SMTP, and can be integrated seamlessly into existing system environments.

Is the solution suitable for large organizations?

Yes. The platform was specifically designed for high user counts, multi-tenancy, and deployment in hosting and data-center environments.

Why are more and more companies and public authorities adopting an on-premises communication platform?

The EGA minimizes dependency on international platforms, promotes digital sovereignty, and provides a controllable communication solution for public authorities and municipalities - with no compromises on functionality or usability.

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.

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S/MIME Encryption

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

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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.

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Simply fill out the form to get started - we usually get back to you within one business day with a concrete offer or an appointment for your personal consultation.

30-day free trial - no risk
No contract, no minimum term
Server locations exclusively in Germany
Response usually within one business day
Personal point of contact, not a call center

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