Bring Together Email, Calendaring and Enterprise Applications

Zimbra is an enterprise-class email, calendar and collaboration solution built for the cloud, both public and private. With a redesigned browser-based interface, Zimbra offers the most innovative messaging experience available today, connecting end users to the information and activity in their personal clouds.

Zimbra Collaboration - Overview

Messaging and Collaboration

  • Connect users to their personal clouds with a smarter mailbox that integrates email, tasks, address book, calendar, files and enterprise applications
  • Choose multiple deployment options: in a private cloud as a virtual appliance or hosted in a public cloud
  • Stay connected anywhere on any smartphone or other device with IMAP/POP, CalDAV and CarDAV
  • Work online or offline with Zimbra Desktop or clients such as Microsoft Outlook using IMAP/POP, CalDAV and CarDAV
  • Integrate with external directories for authentication, address lists and provisioning

Advanced, Integrated Web Experience

  • Boost productivity with an innovative, recently enhanced, robust, browser-based interface
  • New dedicated search tab with common and easy-to-customize filters
  • Easily send and receive authenticated and encrypted email messages using the OpenPGP Zimlet
  • Productive document management, check in/out, instant sharing of documents and folders
  • Calendar wizard finds optimal group meeting times and is interoperable with Microsoft Exchange 2007 / 2010
  • Transform Zimbra into a customized “collaboration hub” by integrating external applications and web services – such as Facebook, Twitter, Socialcast and enterprise applications including Oracle and SAP
Zimbra Collaboration - Overview
Zimbra Collaboration - Overview

Simplified Administration

  • Simplified, task-oriented AJAX Web Administration Console enables anywhere administration
  • Integrated anti-Spam, antivirus and directory services (LDAP, Active Directory)
  • Manage end-user features, quotas, storage policies via Class-of-Service (CoS)
  • Migration Wizards enable customers to rapidly and easily migrate from Microsoft Exchange and Domino environments to Zimbra

Anywhere, Any Device

  • Synchronization to iOS (iPhone, iPad), Windows and Android-based smart phones and tablets, using IMAP/POP, CalDAV and CarDAV
  • Rich browser-based experience for Zimbra email, contacts, calendar and files on any xHTML-capable device
Zimbra Collaboration - Overview
Zimbra Collaboration - Overview

Zimbra Desktop and Desktop Clients

  • Get the same powerful Zimbra experience offline with Zimbra Desktop, the free email client for Windows, Mac or Linux desktops using IMAP/POP, CalDAV and CarDAV
  • Aggregates Gmail, Yahoo! Mail, AOL, Hotmail and other POP/IMAP accounts
  • Sync Gmail, Yahoo! Address Book and Calendar

Flexible Deployment and Virtualization-Ready

  • Option to deploy as a Zimbra Collaboration Server natively on hardware or virtualized or deployed as a software virtual appliance
  • Deploy Zimbra on-premises or as a Cloud service from a Zimbra BSP hosting partner
  • VMware vSphere and KVM Hypervisor fully supported
Zimbra Collaboration - Email

A Smarter Mailbox reduces time spent finding important emails

  • View inbox by message or by Conversation
  • Drag and drop messages into folders or onto Tag(s)
  • Share tags across applications and mailboxes
  • Messages may have multiple Tags and act as ‘virtual folders’
  • Instant filtering of direct messages, distribution lists, feeds, and notifications
  • Move bulk or unimportant email out of Inbox to Activity Streams

Email Compose Tabs eliminate the need for new windows with every message

  • Multiple email compose or calendar event tabs may be open at the same time
  • Tabs simplify context switching between email and calendar
  • Rich compose with cut and paste from desktop apps and inline images
  • Attach multiple files from either your computer or Briefcase
  • Autocomplete to contacts in your personal or Global Address List (GAL)
Zimbra Collaboration - Email
Zimbra Collaboration - Email

Integration of email, contacts and calendar makes toggling between them unnecessary

  • Preview your daily schedule next to a meeting invite in email
  • Drag a message onto the Email Calendar Widget to automatically create a meeting with the email recipients, including any attachments and email notes
  • Drag a message onto Contact Collector to add all message recipients to your Address Book

Recover gracefully with Undo Send, Restore Email and Scheduled Delivery

  • Choose a default delay time between 2 – 20 seconds for messages to be actually sent through the mail queue after hitting the Send button
  • Recover deleted items from the Trash folder for up to 30 days (administrator configurable)
  • Choose Send Later from the Send button drop-down to select a future date, time and even time zone to send an email
Zimbra Collaboration - Email
Zimbra Collaboration - Email

Simple sharing with Delegated Access to inbox or folders

  • Right-click on your inbox, a folder or sub-folder and share it within or outside your workgroup (administrators may disable public share if security policy does not allow it)
  • Grant others View, Manage or Administration rights
  • Allow delegates to reply ‘on behalf of’
  • Share message folders to collaborate with project teams
Zimbra Collaboration - Calendar

Robust calendar designed for the enterprise

  • Day, Week, Work Week, Month, List, Schedule Views
  • Drag and drop events to change date, time or duration
  • Toggle visibility and color code multiple schedules and events
  • Mark events public, private, busy
  • Tag events for faster organization, share them with email, contacts
  • Multi-Tab Event Compose makes toggling between calendar and email unnecessary
  • Invite attendees from Global Address List (GAL), view free/busy and set optional/mandatory
  • Set start-stop and duration times, automatically adjusted for users in other time zones
  • Choose locations, resources and add attachments
  • Configurable pop-up, email and SMS reminders
  • Fully customizable repeating event settings

Group Scheduling Wizard finds an optimal time/place for large meetings in seconds

  • Preview invitees’ free/busy times
  • View time / date by number of available invitees
  • Auto-suggests next available time / locations
  • One click to preview all available conference rooms at selected time
  • Set building, floor and room capacity suggestion preferences
Zimbra Collaboration - Calendar
Zimbra Collaboration - Calendar

Delegate access to calendars and share calendars with peers

  • Right-click a Calendar icon to share it within or outside your workgroup
  • Grant others View, Manage or Administration rights
  • Allow delegates to schedule and accept meeting invites ‘on behalf of’
  • Publish Calendars publicly to the web and send anyone public ‘Free/Busy Links” to share your availability without having to sent explicit invites
  • Smart views for managing multiple calendars
  • Import any iCal feed or Google calendar into Zimbra Calendar to create a master free/busy view across work, club and personal calendars.
  • Create new Calendars to add Holidays, Sports, Facebook or Google Calendar as feeds in Zimbra
  • Set feed display color to easily tell them apart from work schedules
  • Choose whether feeds will appear in your global free/busy status across the organization

Save time and frustration by not starting over

  • Right-click an event to Create a Copy, which will preserve invitees, attachments and notes (such as dial in numbers)
  • Edit copied event without worrying about affecting original event
  • Use the Trash Folder to view and restore from a list of deleted events (storage retention policy is admin configurable)
Zimbra Collaboration - Calendar
Zimbra Collaboration - Collaboration Tools

Zimbra Collaboration Server can be shared internally or externally

  • Share Inbox mail folders, Address Book contacts, Calendars, Tasks, Briefcase folders and files
  • One standardized sharing UI, which is integrated with Global Address List (GAL)
  • Choose internal (read, manage or administrative access) or external publishing (view only with password or public URL)
  • Available settings to users are all Administrator configurable

Streamline sharing management as new users join an organization or distribution alias

  • Find Shares in any core application and add folders previously shared to them or a distribution alias to which they belong
  • Manage share history in Preferences by application and user, change permissions or revoke status
  • Administrators may use the Admin Console to quickly enable share notifications
Zimbra Collaboration - Collaboration Tools
Zimbra Collaboration - Collaboration Tools

An Integrated document management Briefcase eliminates the need for separate document management tools

  • Upload multiple files of any file type in one step from the desktop to Briefcase
  • Save email attachments direct to Briefcase instead of downloading to the desktop
  • Attach files during Email Compose from Briefcase
  • Share Briefcase folders with peers

Create personal or team Task Lists with due dates, priority and percent complete

  • Quickly sort Task View by priority, status and past due
  • Set reminders on Tasks and receive email Daily Digest of Tasks
  • Rich text compose for details and attach files
  • Tag Tasks for additional organization or to associate with projects common across Zimbra applications
Zimbra Collaboration - Collaboration Tools
Zimbra Collaboration - Search

Search all core applications with a dedicated search tab

  • Search email, contacts, events, task and documents
  • Search within email bodies and over 200 different attachment types
  • Simple interface to quickly filter on common attributes or add complex logical operators
  • Offline capability easily provided with Zimbra Desktop or similar standards-based client

Save common searches as a virtual Search Folder

  • Folders can be defined by multiple attributes (eg individual + attachment + unread)
  • Like normal Folders, they can be moved and grouped within other inbox folders
  • Quickly define highly refined searches with Search Language or Visual Search Builder
Zimbra Collaboration - Search
Zimbra Collaboration - Search

Refine searches quickly and easily with Visual Search Builder

  • Advanced Search module available in each core application
  • Add widgets for meta or body content, attachment type, date, location, status, Tag, time and more
  • Search results refresh in real-time and minimize trial and error
  • Save searches as Search Folders
  • Quickly create powerful sorting options such as “Unread Messages Today,” “PDFs sent Project Team” or “All attachments over 1MB” (to prune an inbox)

Zimbra Collaboration - Zimlets

Enhance the End User Experience with Zimlets

  • New functionality may consist of simple hovers (view maps, calendar schedules) or entirely new application tabs (Zimbra Social)
  • Zimlets can call 3rd party data sources (WebEx) or internal back office systems (CRM)
  • Administrators configure which Zimlets are available to users and they can further refine their usage preference within the deployed set
Zimbra Collaboration - Zimlets

View Calendar Email Zimlet

Hovers are simple yet powerful ways to save time. If someone sends an email suggesting a meeting date, simply mouse over to preview your calendar on that day.

Undo-Send Zimlet

If you have sent an email and change your mind or want to change something with a quick undo, then this Zimlet is for you.

Zimbra Collaboration - Zimlets
Zimbra Collaboration - Zimlets

ThinkFree Office

This Zimlet creates a client-side interface for Thinkfree Office. The ThinkFree Server can be easily integrated with the Zimbra web client to provide core office productivity to the mail and briefcase repository. The resulting product is comparable feature-wise to the typical Microsoft Office stack but offers more flexibility and a lower TCO.

Zimbra ownCloud Zimlet

This Zimlet brings to your Zimbra Web Client all the capabilities and power from ownCloud. ownCloud is a self-hosted file sync and share server. It provides access to your data through a web interface, sync clients or WebDAV while providing a platform to view, sync and share across devices easily.

Zimbra Collaboration - Zimlets
Zimbra Collaboration - Zimlets


It’s no longer necessary to open WebEx to schedule a conference, it’s done for you and the meeting information is included in the Calendar invites you send.

Email Sticky Notes

This Zimlet lets you attach notes to emails, such as:”I need to confirm dates” or “John’s phone # is 650 350 1122”, etc. Once you attach a Sticky Note, it automatically opens the next time you open that email.

Zimbra Collaboration - Zimlets

Build Your Own

Using freely available reference Zimlets as well as Zimbra and 3rd party APIs, you can quickly build and deploy new Zimlets that are tailored to the specific workflows that will streamline your business.

For more information, please see the Zimbra Wiki on Zimlets and the Zimlet Developers Guide.

Zimbra Collaboration - Zimlets

Explore the Zimbra Community and Gallery

Zimbra has a large open source Community that can provide guidance on how to extend Zimbra functionality as well share code based on Zimlets that have been contributed to the Community. An excellent resource for more information is the Zimbra Forums where there are areas dedicated to development and Zimlets.

Another excellent resource for both finding and sharing Zimlets and other custom Zimbra add-ons is the Zimbra Gallery. Zimbra customers and Community members often place their finished creations here for the Community to leverage for their own deployments.

Default Zimlets

Zimbra Collaboration Server ships with ten Zimlets pre-configured and many more that administrators may deploy to their users. Zimlet availability is configurable per user / group using Class-of-Service (CoS).

The following is a list of default Zimlets included in your ZCS installation:

  • Attach Contacts – Attach contacts when composing a new message.
  • Email Attacher – Attach email messages when composing a new message.
  • Dates – Highlights dates in email body and previews associated appointments on that day and creates a link to the calendar.
  • Drag-n-Drop Attachments – Drag-n-drop file attachments from the computer desktop when composing an email message.
  • Email Contact Details – Highlights and previews associated contact details for an email address in your Address Book.
  • LinkedIn – Shows LinkedIn search result for a given email address in a message header.
  • Social – Access and manage Twitter, Facebook, Digg and TweetMeme from Zimbra.
  • Search Highlighter – After a mail search, this Zimlet highlights search terms with yellow color in email bodies.
  • URL Links – Highlights Web URLs for linking in email messages.
  • WebEx – Easily schedule, start or join WebEx meetings. Add a WebEx event to an invite in Zimbra.

What is Zimbra Collaboration Open Source Edition?

Zimbra’s Open Source Community

Since the inception, Zimbra has been a community. All of our Zimbra Collaboration Open Source Edition software, documentation and innovation has been created, tested, used, and discussed openly by people like you participating in our Open Source Community. Our contributors diagnose bugs, fix bugs, translate programs, submit patches, point out deficiencies in documentation, answer community questions, submit killer applications, alert us to something that needs tweaking, and write new software. No matter how you contribute, we welcome new ideas and contributions for the advancement of greater shared knowledge and a better Zimbra Collaboration product.

So jump in! Zimbra Collaboration Open Source Edition is available for you to test, evaluate, deploy, customize and improve.

Special Note: Zimbra recently made key changes to its open source software licensing in order to build an even stronger foundation for community-powered innovation. With the release of Zimbra Collaboration 8.5, Zimbra officially moved to Open Source Initiative-approved licenses. The Zimbra Open Source Edition Web Client Code is released under the Common Public Attribution License, version 1.0 (CPAL v.1). The Zimbra Open Source Edition Server Code is released under GNU General Public License, version 2 (GPL v.2). The Zimbra Open License Community Zimlets Code is released under the Common Public Attribution License, version 1.0 (CPAL v.1). Versions prior to version 8.5 will remain under the Zimbra Public License 1.4. By moving to OSI-approved licenses, Zimbra hopes to increase contributions from the open source community and increase compatibility with other open source projects, so that customers, partners, and end users receive greater benefit from integration across the open source software ecosystem.

More Tips:

  • Can I revert the Network Edition Trial to the Open Source Edition? Absolutely, all your email data, etc. will be left intact if you choose not to purchase ZCS Network Edition
  • ZCS server downloads are intended for administrators and developers.
  • First time installing? Use the latest 64-bit platform where possible on your new systems.

If you have questions about which product edition best for you, or wish to purchase a subscription plus support to the Zimbra CollaborationNetwork Edition, please contact us.

Get the Open Source Edition of Zimbra Collaboration


Technical Specifictations

Zimbra Collaboration is supported on a variety of Hypervisors and Operating Systems

System Requirements

Evaluation and Testing

  • • Intel/AMD 64-bit CPU 1.5 GHz
  • • RAM requirements:
    • • For single server installations, a minimum of 8GB of RAM is required.
    • • For multi-server installations, contact Zimbra sales for recommendations.
  • • 5 GB free disk space for software and logs
  • • Temp file space for installs and upgrades*
  • • Additional disk space for mail storage

Production environments

  • • Intel/AMD 2.0 GHZ+ 64-bit CPU
  • • RAM requirements:
    • • For single server installations, a minimum of 8GB of RAM is required.
    • • For multi-server installations, contact Zimbra sales for recommendations.
  • • Temp file space for installs and upgrades*
  • • 10 GB free disk space for software and logs (SATA or SCSI for performance, and RAID/Mirroring for redundancy)
  • • Additional disk space for mail storage

*Temp files space: The zimbra-store requires 5GB for /opt/zimbra, plus additional space for mail storage. The other nodes require 100MB.

Cloud Platforms

The following Cloud Platforms are supported:

  • • Oracle Cloud Infrastructure as a Service New
  • • VMware vCloud Director
  • • VMware vCloud Air

Virtualization Platforms

The following hypervisors are supported:

  • • VMware vSphere 4.x
  • • VMware vSphere 5.x
  • • XenServer 6.2
  • • XenServer 6.5
  • • KVM

Operating Systems

The following Operating Systems are supported:

  • • Red Hat® Enterprise Linux® 7 (64-bit)
  • • Red Hat Enterprise Linux 6 (64-bit), patch level 4 or later is required
  • • Oracle Linux 7.2 New
  • • Oracle Linux 6.6 New
  • • CentOS Linux® 7 (64-bit)
  • • CentOS Linux 6 (64-bit), patch level 4 or later is required
  • • Ubuntu 14.04 LTS Server Edition (64-bit)
  • • Ubuntu 12.04.4 LTS Server Edition (64-bit) running the saucy (3.11) or later kernel is required
service providers worldwide
government & financial institutions
businesses worldwide use Zimbra in the cloud
“We are very happy with our decision to choose Zimbra. The solution is very good and the support has been extremely helpful. We’ve really enjoyed working with the entire team at Logix.”
Vipin Kumar, Group CIO, Escorts Limited
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