Zimbra Collaboration: Private Cloud Email & Unified Communication

Zimbra Collaboration – Private Cloud, On-Premises Email & Unified Communications

Modern businesses rely on communication systems that are secure, reliable, and under their control.

Kent-ITS designs and deploys Zimbra-based collaboration platforms, providing enterprise-grade email, calendar, and communication systems without forcing businesses into public cloud dependency.

Beyond Subscription Email Platforms

Many organisations default to platforms such as Microsoft 365 without fully considering the trade-offs:

• Ongoing per-user licensing costs
• Limited control over data location and access
• Dependence on external providers for uptime
• Restricted flexibility for integration with internal systems

For some businesses, these are acceptable. For others, they introduce unnecessary cost and limitation.

What Zimbra Provides

Zimbra Collaboration is a complete communication platform delivering:

• Business email (IMAP, ActiveSync, web access)
• Shared calendars and scheduling
• Contacts and directory services
• File sharing and collaboration
• Integrated messaging and communication tools

All within a single, unified system accessible from desktop and mobile devices.

Deployment Options – Designed Around Your Business

Zimbra can be deployed in a way that suits your operational and security requirements:

On-Premises (Self-Hosted)
A fully internal system hosted on your own infrastructure, providing maximum control and independence.

Private Cloud
Hosted on dedicated or controlled infrastructure, combining flexibility with external accessibility.

Hybrid Deployment
Combining internal systems with selected external services where appropriate.

Many small and medium-sized businesses continue to operate on-premises systems successfully, particularly where control, integration, or regulatory requirements are important.

Engineering the Platform Properly

Kent-ITS does not simply “install email systems.”

We design communication platforms as part of a wider infrastructure, including:

• Virtualised or physical server environments
• Secure authentication and access control
• Network integration and segmentation
• Backup and disaster recovery systems
• UPS and power resilience considerations

Every system is built to operate reliably under real-world conditions — not ideal scenarios.

Backup & Data Protection – Real-World Approach

Reliable backup is critical for any email platform.

Zimbra offers multiple approaches, and we implement solutions based on technical requirements and cost efficiency, not vendor defaults.

In many deployments, we utilise:

• Real-time mailbox backup and recovery tools such as Zextras
• Granular restore capabilities (individual emails, accounts, or full systems)
• Integrated backup strategies aligned with wider infrastructure

This approach often provides enterprise-level backup capability without the higher licensing costs associated with Network Edition platforms, while maintaining flexibility and control.

Security & Control

A properly deployed Zimbra platform supports:

• Multi-factor authentication
• Secure access policies
• Encryption and secure communication
• Controlled device access
• Integration with network and security systems

Security is not an add-on — it is built into the system design from the outset.

Zimbra vs Microsoft 365

Both platforms have their place. The correct choice depends on your business requirements.

Microsoft 365

• Fully managed cloud service
• Minimal infrastructure required
• Predictable per-user subscription costs
• Reliance on external provider

Zimbra (On-Prem / Private Cloud)

• Full control over data and infrastructure
• Flexible deployment models
• No mandatory per-user subscription
• Greater integration with internal systems
• Requires proper design and ongoing management

Kent-ITS supports both approaches and will recommend the correct solution based on your operational, security, and financial requirements — not a one-size-fits-all model.

The Result

A properly engineered communication platform that:

• Operates reliably day-to-day
• Scales with your business
• Reduces long-term dependency on external providers
• Integrates with your wider IT and security systems
• Provides full control over data and infrastructure

Designed Systems, Not Subscription Dependencies

Not every business requirement is suited to public cloud platforms.

Kent-ITS delivers communication systems designed around your needs — whether that means cloud, private infrastructure, or fully on-premises deployment.