Business Email
Reliable, secure enterprise email with the performance and features organisations expect. Shared mailboxes, public folders, delegate access, and resource scheduling all included.
grommunio: Enterprise Email and Collaboration, On Your Terms
grommunio is a modern open-source email and collaboration platform that gives your organisation enterprise-grade business email, shared calendars, contacts, chat, video meetings, and file sharing in a single system. We deploy and manage grommunio for businesses across Dubai and the UAE that want a complete communication platform they fully control, on-premises or in private cloud, without the per-user cloud fees and vendor lock-in of hosted email.
Built in Europe and developed in the open, grommunio is designed for organisations that take data sovereignty seriously. Your email, calendars, and files stay on infrastructure you own, within UAE borders, which matters for government, healthcare, finance, legal, and any business with data residency obligations.
A Complete Collaboration Platform
Calendars and Contacts
Shared calendars, free/busy scheduling, and organisation-wide address books that sync across every device.
Chat, Video, and Files
Integrated team chat, video meetings, and file sharing in one web interface. No need to stitch together separate tools for every function.
Web, Desktop, and Mobile
A modern web interface, native desktop client support, and full mobile sync for iOS and Android. Your team works the way they already do.
Scales With You
From a 20-person office to deployments of over 100,000 users. grommunio grows with your organisation without licensing penalties at every tier.
Microsoft Exchange Migration
For organisations running Microsoft Exchange, grommunio is the most seamless migration path available, because it is built as a native drop-in replacement for Exchange. This is where grommunio stands apart from every other open-source alternative.
Microsoft Exchange Server 2016 and 2019 reached end of support on 14 October 2025, and the Extended Security Update programme ended in April 2026. If you are still running Exchange 2019 on-premises, your mail server now receives no security patches and no bug fixes, leaving every new vulnerability open. Microsoft’s only on-premises path forward is Exchange Server Subscription Edition with its ongoing licensing, or a move to Microsoft 365 where your data lives in their cloud. For many organisations in the UAE, grommunio is the better answer.
A True Drop-In Replacement for Exchange
grommunio implements the full Microsoft Exchange protocol stack, so your existing Outlook clients, mobile devices, and mail applications connect to it exactly as they connect to Exchange. No plugins, no connectors, no add-ins. For your users, nothing changes. For you, the economics and control change entirely.
MAPI over HTTP
Outlook for Windows connects natively, exactly as it does to Exchange. Nothing to install on each machine.
Exchange Web Services (EWS)
Outlook for Mac, eM Client, and Apple Mail work out of the box.
Exchange ActiveSync (EAS)
Native push mail, calendar, and contacts on iOS, Android, and Outlook mobile. grommunio even puts shared mailboxes on mobile over ActiveSync, which Microsoft 365 itself cannot do.
Standard Protocols
IMAP, POP3, SMTP, CalDAV, and CardDAV for any other client.
Zero-Touch Provisioning
Outlook Autodiscover and Apple mobileconfig mean clients configure themselves from just an email address.
Why Migrate From Exchange to grommunio
Predictable Licensing
Straightforward licensing with optional enterprise support, rather than per-user cloud fees that climb every time you add staff. You can run grommunio in production and scale it without renegotiating your costs at every tier.
Keep Your Data in the UAE
Mail, calendars, and files stay on-premises or in your private cloud, within national borders.
Keep Your Investment
Your Outlook licences, mobile devices, and workflows all carry over. A migration to grommunio is a server change, not an organisation-wide retraining exercise.
Escape End-of-Life Risk
Move off unsupported Exchange 2019 onto a platform that is actively developed, patched, and supported.
Our grommunio Migration Service
We handle the move from Exchange to grommunio end to end, as a structured process designed to be invisible to your users.
Assessment
We review your current Exchange environment, mailbox sizes, public folders, shared mailboxes, and client mix, then size the grommunio deployment and plan the cutover.
Deployment
grommunio installed on your infrastructure or private cloud, with Active Directory or LDAP integration, correct server sizing, and high availability where needed.
Migration
Mailboxes, calendars, contacts, and public folders migrated from Exchange, piloted with a small group first, then rolled out in phased batches using native migration tooling.
Cutover and Support
Autodiscover setup so most clients reconfigure themselves, hands-on support through the transition, and ongoing management with Nakivo backup after go-live.
grommunio or Zimbra?
We deploy both open-source collaboration platforms and recommend the right one for your environment. If native Outlook compatibility over MAPI matters to your organisation, grommunio is usually the better fit because it speaks Exchange protocols directly. If you are moving away from Outlook entirely and want a mature webmail-first platform, Zimbra may suit you better. We assess your setup and advise honestly.
