GROMMUNIO GOLD PARTNER · HDN

Sovereign email and collaboration that fits your IT.

HDN designs and operates grommunio environments from the first architecture decision through migration and ongoing support — on your own infrastructure, in a selected data centre or as a managed service.

Verified Gold Partner

High-Definition Development & Networks GmbH is listed by grommunio as a Gold Partner in Schattwald, Austria.

View official partner listing

An open platform. A clearly managed project.

grommunio combines central business communication in a European open-source platform. HDN turns it into a maintainable business solution with a defined hosting model, secure access, documented migration and reliable operations.

01

Consulting & architecture

We determine the right operating model, sizing, domains, identities and integrations before the first mailbox is moved.

  • Requirements and current-state assessment
  • On-premises, data-centre or hybrid design
  • Licensing, sizing and migration roadmap
02

Migration & rollout

Users, mailboxes, calendars, contacts and devices are transferred through a controlled and documented process.

  • Migration from existing mail systems
  • Outlook, web and mobile integration
  • AD/LDAP, permissions and user structures
03

Managed operations & support

After launch, we keep the platform secure, available and understandable for administrators and users.

  • Monitoring, updates and capacity checks
  • Backup, restore tests and documentation
  • User support and a direct HDN contact

Everything teams need for daily communication.

01

Email & shared mailboxes

Business email, aliases, distribution groups and shared functional mailboxes.

02

Calendars, contacts & tasks

Shared resources, scheduling and structured collaboration across teams.

03

Outlook & mobile devices

Integration through common enterprise protocols for familiar client workflows.

04

Chat, meetings & files

Additional collaboration modules within a controlled company environment.

05

Identity integration

Connection to existing user and directory structures such as LDAP and Active Directory.

06

Data sovereignty

Operation on defined infrastructure with transparent responsibilities and data paths.

The platform adapts to your company — not the other way around.

01

On your infrastructure

For organisations that want to keep systems and data in their own environment.

02

Selected hosting

Hosted in a suitable European data-centre environment with a clearly defined architecture.

03

Managed by HDN

Monitoring, maintenance, backup and support as a predictable managed service.

Stefan Keller from HDN during a personal consultation

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