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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
7.3
Number of Reviews
91
Ranking in other categories
No ranking in other categories
Zimbra Collaboration
Ranking in Email Applications
5th
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 November 2025, in the Email Applications category, the mindshare of Microsoft Exchange Online is 12.1%, down from 15.5% compared to the previous year. The mindshare of Zimbra Collaboration is 7.9%, down from 9.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Applications Market Share Distribution
ProductMarket Share (%)
Microsoft Exchange Online12.1%
Zimbra Collaboration7.9%
Other80.0%
Email Applications
 

Featured Reviews

AM
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
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

"Its most valuable feature is the unlimited storage. It also has very little downtime."
"The most valuable feature of Microsoft Exchange Online is if you have people that are geographically distributed from each other is good. For example, if you have people in the United States, Europe, Africa, Asia, and Australia, having an online solution works best because then you can reach the scale of the data centers that are available by Microsoft. Additionally, if you're only going to have two to three people using the solution the cost is a lot less than having an onsite server and licensing. It is highly beneficial in these areas."
"Microsoft has many consultants who can provide support."
"Microsoft Exchange Online's resiliency is its most valuable feature."
"It's not hard to set up."
"The initial setup is straightforward and easy to configure."
"The product’s most valuable feature is the online archive."
"The most valuable feature is the cloud environment."
"We can control all the data in my IT infrastructure."
"Network NG Modules are valuable to us."
"The web interface is powerful and easy to use."
"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."
"The Zimbra Collaboration's most valuable feature is web access."
"The most valuable feature of Zimbra for our team's productivity is its efficiency in handling email communication."
"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."
"The most valuable feature of Zimbra Collaboration is email functionality."
 

Cons

"We use different software for email spoofing filters and similar functions because Exchange is quite limited in this area."
"The configuration of the solution's on-premise version is a little bit difficult, and its troubleshooting is more difficult than the installation itself."
"Technical support can be improved by shortening the response time and increasing their knowledge."
"It is tricky to integrate Microsoft Exchange Online if you are in an infrastructure provided by other vendors."
"The solution’s technical support could be improved."
"We would like to have more automation with Microsoft Exchange Online."
"The cost is very high, and not every customer can afford licenses."
"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."
"We have had an issue with security."
"The tool should improve its multi-cloud feature."
"The solution could use more integration with third-party tools."
"Some issues cause the solution not to function correctly or to cause downtime once a month."
"There are some security issues."
"Zimbra Collaboration's video conferencing could be improved."
"The installation is not straightforward, it can take two days for the full implementation."
"In the next release, Zimbra Collaboration should include a security feature to allow access for mobile device administrators."
 

Pricing and Cost Advice

"The pricing is really high. It's higher compared to other services."
"The pricing for this solution is good. We renew our contract every three years. I would rate the pricing for this solution a three out of five."
"Our organization pays for a corporate license to use the solution."
"I think that the price is a little high, especially considering that Google have a similar, free email solution."
"Microsoft solutions are expensive."
"We have a license per user scenario."
"The licensing cost increased at least 15 to 20 percent recently and it would be helpful for them to be reduced."
"I have no opinion."
"We are using perpetual licenses. We have deployed it in our local data center, and we buy perpetual licenses on a per-user basis."
"We pay yearly licenses for Zimbra Collaboration."
"The price of the solution is low."
"Zimbra Collaboration is less expensive than Microsoft Exchange. Zimbra works for small companies because it is not expensive. Zimbra Collaboration has more security tools than Microsoft Exchange. If you are choosing between Zimbra Collaboration and Microsoft Exchange, you have to take into account the cost of security tools with Microsoft Exchange. When you purchase Microsoft Exchange, you will also have to purchase tools for security, which adds to the cost. The migration from Zimbra Collaboration to another email solution is very simple and easy. Migration from Microsoft Exchange to another email solution is very difficult. Microsoft doesn't allow migration that easily. In fact, you have to pay for tools to do that. You have to buy some expensive tools to migrate."
"Zimbra Collaboration is expensive, and there is no perpetual license option."
"The solution is competitively priced."
"When it comes to the licensing of Zimbra Collaboration, my license covers the servers and I find its terms to be much simpler than those of Microsoft Exchange."
"The solution is not expensive compared to other products."
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Top Industries

By visitors reading reviews
Computer Software Company
11%
Financial Services Firm
8%
Educational Organization
8%
Comms Service Provider
7%
Computer Software Company
14%
Comms Service Provider
11%
Government
8%
Outsourcing Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business40
Midsize Enterprise14
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?
I see no disadvantages currently. From the admin perspective, whenever an admin wants to get the email backup for a particular employee, there are a few challenges in terms of the role assignment o...
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 do you like most about Zimbra Collaboration?
The most valuable feature of Zimbra for our team's productivity is its efficiency in handling email communication.
 

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: November 2025.
873,665 professionals have used our research since 2012.