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Zimbra Collaboration Suite is open source server and client technology for next-generation enterprise messaging and collaboration (email, group calendar, contacts, etc).

End-user benefits include:

  • Browser based AJAX client with search, shared calendar and mail that is integrated with contacts and calendar.
  • Support for Outlook, iCal, App.Mail, contacts and offline mode.
  • Support of Apple, Windows, and Linux operating systems.
Administrator Benefits:
  • Online move, back-up, and recovery of individual or a group of mailboxes.
  • Compatibility with existing LDAP directories.
  • more...

What's New

Version 7.0.0b1:

ZCS Administration:

  • Added admin console configuration control of the data source polling interval. Polling intervals can be set for POP, IMAP, Calendar, GAL, RSS, Caldav, Live (Microsoft Live Hot mail), and Yab (Yahoo Address Book). This can be set from the account/COS Advanced tab. By default the polling intervals are not enabled. (bug 21199)
  • ZCS now integrated with more...


  • Mac OS X 10.6 or later
  • Java 1.5

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Zimbra Collaboration Suite User Discussion

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Maximxygo Member IconReview+2

SMITIPS, that accusation is patently FALSE. Zimbra, which was owned by Yahoo, and is currently owned by VMware, is NOT harvesting emails. Not only is that silly, but you have absolutely no technical evidence to support such a strong statement.

Yes, the Zimbra Desktop software is not fantastic. However, this page is not for Zimbra Desktop, but Zimbra Collaboration Suite, the actual server, which I and many others have been using very successfully for years, and would never give up. It's simply fantastic.

Zimbra has a fantastic reputation in the industry. Not only does Yahoo continue to use Zimbra, but many universities, enterprises (i.e. comcast), and parts of US government use Zimbra. It has a very active open source community behind it as well.

Reply0 replies
Version 6.0.8
Smtips Member IconReview+228

Just a note on their sister app, the Zimbra Desktop thing. You may want to think twice before giving this company any business. Or expecting them to come to your aid if something in their app breaks.

Horrible app. All this raving about it, I tried to put in my yahoo email and password and it just did nothing. I completely uninstalled it, reinstalled it, tried again and it didn't work just like before. Said it was unable to find yahoo LOL.

But the worst of the whole thing is, I emailed these people well over a week ago and they never responded.

I think this company is attempting to harvest emails and logins for their own use. I would definitely NOT trust a company who refuses to respond to a query about their app where you have to put in your EMAIL PASSWORD.


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JavaScript Member IconComment+0

Hi all!

I must have done something wrong during install with this thing, because it's nowhere to be seen in my Applications folder... Found some refenreces to it in an Opt folder in my MacintoshHD main folder, but nothing at user level.

How come?

Aside from that, I can't really judge how good this product is, but I remember installing Zimbra Desktop (now shareware?) and using it for a while. It worked fine, but there's one thing I sorely missed that Thunderbird has: an ad-blocker... So I dumped it. I'd like to try this suite, but first I have to install it...

Reply2 replies
Version 6.0

I believe this only works on Mac OS X Server, not on end-user computers.


Zimbra Collaboration Suite is a server. It installs as a background service.

There is no conventional user interface.

It is not an application that you use to read and write emails in the way Thunderbird or Mail.app are.

It can be installed and run on a desktop Mac, but it's not designed for desktop users.

mswfujowdffyc Member IconReview+0

After a large deployment on OS X Server hosts, Zimbra has stopped supporting OS X on ppc. Why?

No idea.

But do your homework if have an investment in ppc hardware that is more than adequate for your needs before buying.

Reply0 replies
Version 5.0.14
Kris Browne Member IconComment+5
Kris Browne

The ownership by Yahoo doesn't trouble me as much as what will happen if(when is more likely) microsoft buys Yahoo. As someone else said, Zimbra really offers a well designed Exchange competitor stack, and I can't see MS letting that stand.

Reply0 replies
Version 5.0.2
maximxygo Member IconComment+2

Absolutely no changes whatsoever, besides renaming a Zimblet from "yahoo maps" to "yahoo local." Yahoo plans to (and by all appearances does) operate Zimbra as a separate entity, most likely injecting ZCS components into their online webmail offerings. I know it freaks some people out that Yahoo owns it now (why I don't know... yahoo's turned out to be a pretty respectable company these days), but I (nor other zimbra employees) can see any benefit from Yahoo changing anything about it, nor from killing it outright. It's a truly unique Exchange competitor, and makes its owners decent money... they only benefit from serving their existing target audience better.

Reply0 replies
Version 5.0
maximxygo Member IconReview+2

Quite simply the best collaboration suite I've ever set up, administered, and used as an end user. The openness of Zimbra really makes it shine beyond the already *amazing* set of built-in functionality. It works wonderfully with iCal (subscribe/publish), WebDAV for "briefcase," plus a TON of other killer features, including an iPhone-optimized interface for mobile devices.

It not only acts as a very cost-effective "replacement" for Outlook, it bests it in every way. I have users using the native AJAX interface, users attached via IMAP using Outlook, Thunderbird, and Apple Mail and MobilMail (iPhone), even a few using the chat functions via Jabber in iChat. It all just works, and works *wonderfully.*

Top notch software. The Open Source version is great and FREE (that's what we use), and the Network (paid) edition is stellar, and very inexpensive.

Reply1 reply
Version 5.0

Have you been able to tell any additions/subtractions due to Yahoo? I know several companies that were about to switch over and then heard the news about Yahoo buying it. The switch over plans then stopped cold. A shame too, because it was (maybe still is?) a nice suite.

Jamus Member IconComment+260

So I guess this is the first version post-Yahoo?

Reply1 reply
Version 4.5.7

from macintouch.com today:

"Zimbra, just acquired by Yahoo for $350 million, released Zimbra Collaboration Suite 4.5.7, an update of its server-based, open-source, email/collaboration suite that provides email, calendars, RSS/Atom feeds, tags, and more. It includes support for iSync, Apple Mail, iCal, Thunderbird, Sunbird, Eudora, Outlook, and others. This release adds "219 bug fixes and enhancements," including many stability enhancements for Tomcat and LDAP, and more. Zimbra Open Source Edition is available free for Mac OS X and Linux. An enhanced Network Edition is priced starting at $25 per mailbox per year."

RealIso Member IconComment+2

Sorry, but this is a collaboration suite, not just an app. I'm in no way associated with Zimbra but I think you didn't really understand what Zimbra is.

Zimbra is similar to Exchange with OWA. If you don't know what that means and/or have never installed Exchange + OWA, don't even *bother* thinking about considering the option of installing Zimbra.

This is very specific server software and needs an administrator to install - a really good systems administrator with Unix experience. So if you are looking a drag-and-drop-installable groupware (there is no such thing), then this is definitely the wrong app for you.

Zimbra is really nice, you can just go to the website and check it out, there is a demo-version installed where you can test it and see if it could fit your companys requirements and then tell your sysadmin to have a look at it and see if he can install it.

Reply0 replies
Version 4.5.4
Pedrotaquelim Member IconComment+90

Hi, Does anybody has a updated review on Zimbra?

I would like very much to know your opinion and experience about this Collaboration suite.


Reply1 reply
Version 4.5.2

There is a commercial use for this in Singapore. It support hundreds of users. It seems to work well for them. However, I do not know what hardware platform was it installed on. I do not have an account to use it but have seen it in use.

There are no Ratings for this App yet.
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Current Version (7.x)


Downloads 21,619
Version Downloads 2,036
License Free
Date 21 Oct 2010
Platform OS X / Intel 32
Price Free
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