Outlook
A unified email, calendar, contacts, and task management platform accessible via web, desktop, and mobile apps.

Zimbra is a secure, open standards-based enterprise email and collaboration suite offering flexible deployment and data sovereignty.
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Zimbra provides email, calendar, contacts, tasks, file sharing, and collaboration tools with options for on-premises, cloud, or hybrid deployment. It supports open standards, integrates with major clients and mobile devices, and includes security features like S/MIME encryption and two-factor authentication.
Updated Oct 17, 2026.
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Zimbra powers email and collaboration for hundreds of millions of users —delivering complete data autonomy and industry-leading flexibility for enterprise communications globally.
Intuitive email interface that keeps you organized and productive.
Store, manage, and share files securely with Briefcase without relying on third-party storage providers. Your documents stay accessible exactly where you need them.
Coordinate effortlessly with shared calendars designed for teams and enterprises. Schedule meetings, set reminders, and manage resources — all while maintaining visibility across departments and time zones.
Sync email, calendars, contacts, tasks, and shared folders across all EAS-compatible devices in real time. No additional clients required—stay connected on iOS, Android, and beyond.
Multi-Tenancy Manage multiple organizations or departments on a single instance with distinct policies and settings for each tenant—ideal for organizations or enterprises with diverse business units.
Delegated Administration Assign granular admin roles by group or function, enabling distributed management while maintaining centralized oversight and control.
Hierarchical Storage Management (HSM) Configure internal and external storage volumes—including S3-compatible object stores—directly from the Admin Console.
Choose auto-grouped backups for faster, incremental operations or standard full backups for comprehensive coverage—both options deliver flexibility for any deployment environment.
Two-Factor Authentication (2FA) Add an extra layer of protection with two-factor authentication for secure user logins across your organization.
| Plan | Price | Highlights |
|---|---|---|
| Contact Sales | Custom | Access to Standard and Professional editions
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