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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 February 2026, in the Email Applications category, the mindshare of Microsoft Exchange Online is 11.1%, down from 14.8% compared to the previous year. The mindshare of Zimbra Collaboration is 6.9%, down from 9.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Applications Market Share Distribution
ProductMarket Share (%)
Microsoft Exchange Online11.1%
Zimbra Collaboration6.9%
Other82.0%
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 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."
"Stability has increased exponentially since 2010."
"Microsoft Exchange Online is an easy-to -use email solution."
"A valuable feature of the solution is its global usability."
"Microsoft Exchange Online has great functionality."
"The product was simple to use."
"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 communication and see user activity"
"Exchange Online's most valuable features are two-step verification and security."
"The most valuable feature of Zimbra for our team's productivity is its efficiency in handling email communication."
"The configuration is simple."
"Zimbra Collaboration has a good web interface."
"Good email solution and it's open-source."
"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 interface is powerful and easy to use."
"The Zimbra Collaboration's most valuable feature is web access."
"Network NG Modules are valuable to us."
 

Cons

"I think there should be an incorporation of DLP on the business premium version of Exchange, as well."
"The ActiveSync services and the mapping services could be improved."
"Microsoft Exchange Online could improve the overall protection of the solution."
"They should tighten their cloud security."
"It will be much better if the tool is integrated with OpenAI."
"There is an annual enterprise subscription could improve by having more features."
"The mail-blocking feature is not great and could be improved."
"The solution could improve by making the user interface better."
"It does have a few bugs."
"The product must be more customizable."
"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 could improve by making it easier to use."
"I would like to see a Microsoft schedule function added."
"They should enhance its online meeting features."
"Zimbra Collaboration's video conferencing could be improved."
"We have had an issue with security."
 

Pricing and Cost Advice

"The licensing cost increased at least 15 to 20 percent recently and it would be helpful for them to be reduced."
"This is an expensive solution."
"The subscription fee is monthly."
"The price is a bit high. It is especially expensive in the Indian market."
"The pricing is a bit more expensive than other solutions."
"The product is expensive and has an annual subscription."
"Initially, we had issues with the licensing agreement, but we worked it out with Microsoft."
"The cost is around $12 to $16 per user."
"On a scale of one to ten, where one is cheap, and ten is expensive, I rate the price a four"
"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."
"I use Zimbra Collaboration's community version. We may move to the enterprise version since prices are affordable."
"Zimbra Collaboration offers a good price-to-feature ratio."
"Zimbra Collaboration is expensive, and there is no perpetual license option."
"There is an annual standard licensing fee to use Zimbra Collaboration and there is no other cost."
"The solution is not expensive compared to other products."
"The price of the solution is low."
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Top Industries

By visitors reading reviews
Computer Software Company
9%
Financial Services Firm
9%
Educational Organization
7%
Manufacturing Company
7%
Computer Software Company
12%
Comms Service Provider
10%
Government
9%
Manufacturing Company
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 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: February 2026.
881,665 professionals have used our research since 2012.