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Microsoft Exchange Online vs Zimbra Collaboration comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on May 21, 2025

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Microsoft Exchange Online
Ranking in Email Applications
2nd
Average Rating
8.6
Reviews Sentiment
7.2
Number of Reviews
92
Ranking in other categories
No ranking in other categories
Zimbra Collaboration
Ranking in Email Applications
6th
Average Rating
8.0
Reviews Sentiment
7.3
Number of Reviews
28
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of March 2026, in the Email Applications category, the mindshare of Microsoft Exchange Online is 10.6%, down from 14.4% compared to the previous year. The mindshare of Zimbra Collaboration is 6.9%, down from 9.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Applications Mindshare Distribution
ProductMindshare (%)
Microsoft Exchange Online10.6%
Zimbra Collaboration6.9%
Other82.5%
Email Applications
 

Featured Reviews

AM
Assistant General Manager, IT Infrastructure at SAMI Pharmaceuticals (Pvt.) Limited.
Offers flexibility and cost-effectiveness with multiple service options but could improve support and mobile features
There are many things to consider about email management in Microsoft Exchange Online. The online management is good, the storage is sufficient, and we use most of the features such as the custom rules in Microsoft Exchange Online, which we cannot find in any other email solution. That is a very good option, as we have many options to create custom rules in Microsoft Exchange Online. Regarding security features in Microsoft Exchange Online, we also use Defender for Exchange which includes the basic Exchange Online protection that has spam and threat controls. The use of Defender is beneficial for our security. The flexibility of choosing plans in Microsoft Exchange Online is good. We have chosen the best plan for our use, including multiple licenses such as plan one and business basics, which leads us towards cost-effectiveness, and the pay-as-you-go option is more flexible. Microsoft Exchange Online is very scalable.
Muhammad Talha Baig - PeerSpot reviewer
Business Analyst and Associate Project Manager at SAMI Pharmaceuticals
One of the premium features was customized rooms tailored to the collaboration needs
Zimbra's strength lies in its individuality, and it should focus on leveraging its unique features rather than trying to emulate competitors. My organization has certified Zimbra technicians, so we believe we can utilize Zimbra certification. However, I was recently informed by Zimbra that no such certification exists. I have recently completed the test kit, and after the training, I will gain access to tickets. Therefore, if any clients are experiencing issues, we have a certified technical team available to provide support 24/7. This is how we can cater to our client's needs. I recommend Zimbra to small-scale and enterprise customers. Anyone, even those with 5 users, can opt for Zimbra. Overall, I rate the solution a nine out of ten.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"The product enables us to have remote meetings."
"All of the Microsoft Exchange Online is very useful, such as the sections, the information protection, and the mail flows."
"It is a reasonable solution."
"This solution really does save us a lot of time, and we saved a significant amount of money by using this service."
"Microsoft Exchange Online is an easy-to -use email solution."
"The most valuable features of Microsoft Exchange Online are the frequent updates. They upgrade and optimize the features to make them better and better. They have a very strong ecosystem and they integrate together."
"The most valuable feature is being able to assign an individual a task."
"Microsoft Exchange Online has great functionality."
"One of the premium features was customized rooms tailored to the collaboration needs. Many of the clients customize features such as organization logos and scanners."
"Zimbra Collaboration's best feature is its compatibility with Microsoft's ActiveSync protocol, which allows users to use Outlook on Windows or MacOS."
"Zimbra Collaboration has a good web interface."
"VMware Zimbra is an enterprise-class E-mail, calendar, and collaboration solution, built for both public and private clouds."
"We can control all the data in my IT infrastructure."
"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."
"It has all collaboration features, such as document sharing, video conferencing, chatting, task sharing, and calendar sharing."
"The most valuable feature of Zimbra Collaboration is the cost."
 

Cons

"In terms of machine controls, it was very confusing, and some of the administrative parts will be done from the control, but in online writing mostly we can handle everything."
"In terms of areas for improvement, I think Microsoft could enhance security. Right now, there are limited options for security within Exchange Online, and much of it relies on third-party security and compliance tools. I'd like to see more security features directly integrated. One specific area that needs improvement is the configuration of SMTP for third-party applications. It's challenging to manage without an on-premise SMTP server, and this is an issue many organizations face, including ours. If Microsoft could offer better SMTP configuration for third-party applications within Exchange Online, it would greatly benefit us."
"Cloud security is always a concern and the solution can always increase their security."
"The price could be cheaper."
"I feel that there is a need for improvement in the product, considering that there are some concerns with the tool's integration capabilities."
"We'd like to have the ability to recall emails on the web. I'm not sure if that is available yet."
"Documentation is lacking."
"Encourages endless inefficient communications. Do not recommend it for companies that are trying to create efficient decision making processes and agile movement."
"Some issues cause the solution not to function correctly or to cause downtime once a month."
"The installation is not straightforward, it can take two days for the full implementation."
"There are some security issues."
"Zimbra must improve its solution to make it easy so that the users don't have to use webmail to connect to their accounts and log in to webmail every time. This is something that is lacking in Zimbra Collaboration. They should provide a better way to easily connect email applications on the desktop to the Zimbra server. They should also try to have more functionality for storage management, like Microsoft Exchange. Currently, the management of the email data must be done manually in Zimbra Collaboration, which we are finding very difficult. They should provide a way to save emails so that you can have more space on the server and storage. Because of the lack of this functionality, we are planning to migrate to Microsoft Exchange. Microsoft Exchange provides a better way to manage storage than Zimbra Collaboration. You cannot have a mail solution without storage management because emails will always increase. Zimbra Collaboration also needs tools for management. More back-office tools are required to manage the whole mailbox and space. You don't only manage emails but also the documents attached to the emails. Therefore, you require tools to select and decide what do you want to save or how do you want to free up space in your infrastructure."
"The solution could use more integration with third-party tools."
"The tool should improve its multi-cloud feature."
"The new patches are, at times, not so good, so we don't install them, causing the tool to be not so stable overall."
"The solution’s forums don't have much information or documentation on administration tasks."
 

Pricing and Cost Advice

"The license for the solution is cheap, but it could be more affordable in the long term."
"The licensing price is ok, I'd rate it as four out of five."
"We have a license per user scenario."
"I think it's just awesome. There's no argument about how much value you get on the per user, for user expenditure. It's really great, I don't have any issues with it. I think it's excellent."
"This solution requires a license."
"I think that the price is a little high, especially considering that Google have a similar, free email solution."
"I have no opinion."
"It is a cluster solution."
"Zimbra Collaboration is expensive, and there is no perpetual license option."
"If you choose the network edition, it is a little pricier. They have the open-source edition too which is only community supported."
"On a scale of one to ten, where one is cheap, and ten is expensive, I rate the price a four"
"We pay yearly licenses for Zimbra Collaboration."
"We do not pay for licenses to use this solution."
"Zimbra Collaboration offers a good price-to-feature ratio."
"The price of the solution is low."
"I use Zimbra Collaboration's community version. We may move to the enterprise version since prices are affordable."
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Top Industries

By visitors reading reviews
Financial Services Firm
9%
Computer Software Company
8%
Manufacturing Company
7%
Educational Organization
7%
Computer Software Company
10%
Comms Service Provider
10%
Government
8%
Financial Services Firm
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business40
Midsize Enterprise16
Large Enterprise40
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise3
Large Enterprise7
 

Questions from the Community

What do you like most about Microsoft Exchange Online?
The benefits are widespread and effective communication. We use Microsoft Teams for meetings within and outside our organization. Additionally, Teams can be used for chat, allowing us to track comm...
What is your experience regarding pricing and costs for Microsoft Exchange Online?
If I segment it into three points: low price, average, and high price, I would place Microsoft Exchange Online between average and high price.
What needs improvement with Microsoft Exchange Online?
There is room for improvement in Microsoft Exchange Online. Technical support for Microsoft is good, but in all fairness, I sometimes think more can be done. I have personally tried exploring with ...
How does Zimbra Collaboration compare with Microsoft Exchange?
Zimbra is a free, open source collaborative software suite. The features I like best are the ease of integration and the email, calendar, and collaboration server with web interface. In addition, I...
What needs improvement with Zimbra Collaboration?
When it comes to administration tasks like configuring specific filters or group signatures, I have to dig into the configuration since there's nothing in the graphical or web interface. The soluti...
 

Also Known As

Exchange Online, Exchange Online Plan 1, Exchange Online Plan 2, MS Exchange Online
No data available
 

Overview

 

Sample Customers

Bank Alfalah Ltd., Paderborn-Lippstadt Airport, Blue Star Infotech, Scitec Nutrition, Resolution Films, British Airways, Empire Cinemas, InnoGames
NEC Biglobe, City of Ventura, Monterey Bay Aquarium Research Institute, Hola Publishing, BIG, Sleepwell, LaFayette College, Xmission, DNA, Ring Line, Future Group, TIGC
Find out what your peers are saying about Microsoft Exchange Online vs. Zimbra Collaboration and other solutions. Updated: March 2026.
884,933 professionals have used our research since 2012.