This is a good email solution and it's open-source which is great and the most important feature for us. 

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Zimbra Collaboration is a good tool for video calls. It is also a good desktop application and mobile application, while Zimbra's two-factor authentication is not so good. The mobile application of Zimbra has features allowing it to be used in Zimbra Drive while also providing features for video calls.

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Zimbra Collaboration's best feature is its compatibility with Microsoft's ActiveSync protocol, which allows users to use Outlook on Windows or MacOS.

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The most valuable feature of Zimbra is sending messages as well as text and documents. 

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The Zimbra Collaboration's most valuable feature is web access. 

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It is very easy to use. 

The solution is easy to implement. 

The solution can scale. 

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Zimbra Collaboration's sharing features are most valuable.

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The most valuable feature of Zimbra Collaboration is email functionality.

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The configuration is simple.

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Network NG Modules are valuable to us. They are very high modules. The solution has features that can help administrators and users to manage the server. It is the best tool.

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The subscription base in terms of their support, unlike before, now has a community addition. Now, everything is free.

It's just easy to use and straightforward. For an SMB, it is a recommendable email solution.

The product is easy to set up.

It’s a stable solution.

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Zimbra Collaboration is light to manage. It works on the Linux operating system, which is far better to manage than Microsoft Windows. Microsoft Exchange works only on the Windows server. We prefer working on the Linux server for security reasons and ease of management.

Zimbra Collaboration also has some integrated tools for security. It some modules to fight malware. These modules are not very powerful but are still doing a great job. Microsoft Exchange doesn't have a basic module. You have to purchase a security solution and add it to the solution. 

The cost of Zimbra Collaboration is one more reason for liking it. It is also very simple to migrate from Zimbra Collaboration to another email solution.

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One of the most valuable features involves the solution's automatic backup, which I find to be pretty simple and straightforward, and obviates the need for additional software. The web client features have good graphics and are pretty useful. 

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The most valuable feature of Zimbra Collaboration is the cost.

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I like that I can easily manage all accounts from the management console. This allows real time control of each account. With the CLI, I can also control and manage all server functions or any mailbox, for free.

Premium features, such as auto discovery and archiving, mobile management and HSM, make life much easier. Once implemented, they don't break when you perform OS updates.

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The pricing of the solution is excellent.

It's a newer solution with a modern interface and dashboard.

The interface itself is very responsive and easy to navigate.

The initial setup is very simple and straightforward.

The stability is good and keeps getting better with each new update. 

The pricing of the product is excellent. 

The solution really does scale very easily. 

Technical support is quite helpful.

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The logs, troubleshooting, and tracking we have found to be the most valuable features. We have any issues with lost messages the features are useful. It is very easy to track and log.

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The web interface is powerful and easy to use.

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The backup and storage management features of Zimbra Collaboration are valuable.

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Zimbra is open source. They got absorbed by Yahoo, but they're still primarily open-source and have continued to extend their technology. A lot of other products like Microsoft Exchange offer email or collaboration features, but they are not as fast as Zimbra. And with Exchange, it's not easy to purchase the license. And Zimbra is more reliable in terms of integration.

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It has all collaboration features, such as document sharing, video conferencing, chatting, task sharing, and calendar sharing.

It is awesome in terms of stability and scalability.

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Most valuable to us is the fact that it's open source, so it's possible to do a lot of customization. Zimbrais easy to manage.

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Zimbra Collaboration has integrated a lot of their party tools and they have good documentation available.

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• Shared folders
• Mobile synchronization
• Admin tools
• Anti-spam tools
• Webmail is simple and powerful.

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Email in Zimbra:

The email application allows users to activate the Zimlets "request read receipt". For me, it's a brand new and useful support for email services, which I have not yet experienced elsewhere.

Besides, the interface is very convenient for busy people while scanning the incoming messages/emails and at the same time opening them (3 specific columns/areas of the main "Mail" tab).

Despite sticking with Gmail for over a decade in terms of business, Zimbra have impressed me with some other aspects as well... If the time comes, I would prefer Zimbra to my current solution.

Zimbra mail reminds me of Hotmail, which I did employ in the past. And comparing it to other email free services like Yahoo, Gmail, etc., Zimbra is still on the way to getting in touch with a wider audience, such as: employers, employees, educators, officers, etc., because it has been a symbol of the open-source community and such a powerful resource for students and educators to explore further, as well as to contribute. 

Calendar, tasks in Zimbra:

Different than other applications I have been using for these functions, namely: calendar, tasks, document, etc. Zimbra simply saves time, as these are attached to the main interface by a tab instead of a link to a different page. So, it's recommended for businessmen, especially.

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The Zimbra Collaboration Server has many pros that are useful in a business. It has a centralized web based interface for managing the server console. A user can easily use it as a web based & app base on their desktop, laptop, i-phone and smart phone. An inside user console user can send mail, chat, video call, and voice call with other people. You are able to create a centralized address book on a server so that anyone can import and export contacts on their account. Sync facilities make it easier for all your device data updates. Additionally, you can set your G-mail, yahoo, and Hotmail accounts to import their addresses as well. Anti-spam, antivirus, and directory services can integrate with the server. Like LDAP, and Active Directory… you can design polices with the help of a class of service (CoS) for end user features like quota and storage. The search over internet facility is also included with the latest version of Zimbra. View full review »