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Amazon WorkMail 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

Amazon WorkMail
Ranking in Email Applications
4th
Average Rating
8.4
Reviews Sentiment
6.4
Number of Reviews
14
Ranking in other categories
Cloud Email (2nd)
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 June 2026, in the Email Applications category, the mindshare of Amazon WorkMail is 8.4%, down from 9.5% compared to the previous year. The mindshare of Zimbra Collaboration is 6.7%, down from 8.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Applications Mindshare Distribution
ProductMindshare (%)
Amazon WorkMail8.4%
Zimbra Collaboration6.7%
Other84.9%
Email Applications
 

Featured Reviews

GM
Owner at Marinov
Centralized email accounts have streamlined routing, security checks, and long-term organization
While using Amazon WorkMail over time, I haven't encountered substantial disappointments, but there have been usual glitches with the web interface. For instance, while the service is generally 99.5% perfect, I experience issues like the folder structure I set up sometimes not remembering the state of expanded and collapsed nodes after refreshing the page. This lack of persistence in which nodes are collapsed or opened can be frustrating. However, since it's a minor technical issue, I doubt the average user would notice it. If Amazon WorkMail were not discontinuing, I wouldn't think there is much to improve or enhance about it. It is standard enough and easy to use, and any glitches are minor, not worth evolving or disrupting its current functionality. As for whether the user interface is intuitive and if I'm satisfied with its flexibility and customizability, there are some minor features lacking, but I don't feel a need for changes since it works as designed. The most crucial aspect is that I can set up my address book with the complex organizational structure needed for the accounts connecting to AWS. The lower-level functionalities suit me well enough. Other services often have customizable views of email representations with senders, subjects, and even snippets of content. While my external application on mobile can show customizable lines with my email list, Amazon WorkMail does not offer that feature. I don't really need it, but it would be a nice addition for power users.
Vidya Shree - PeerSpot reviewer
CTO at Molecular Connections Private Limited
Deploys quickly and has a good web interface
Zimbra Collaboration has a good web interface 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 solution’s forums don't have much information or…

Quotes from Members

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

Pros

"It is highly available and scalable. It is also highly reliable. I don't lose any of the messages or emails. If there is an issue where the email sent operation failed, Amazon as a platform ensures that the send operation is retried, and the email reaches its destination. This way, it is highly reliable."
"The most valuable thing is that emails sent through SES have a delivery rate of greater than ninety percent."
"We have cut our costs in half."
"WorkMail works very well, and the functionality is fine."
"Despite being an end-user service on AWS, the backend is complex enough to enable many useful features, I invested time in configuring it, and it worked flawlessly for six years."
"It is very stable. I haven't faced any issues."
"The encryption of emails, both in transit and at rest, has benefited our security strategy as it is a layer of security that provides us better confidence for customers and also internally tracks the security aspects."
"The product is very user-friendly."
"For a small company, Zimbra Collaboration is good because it is simple, inexpensive, and not very difficult to deploy."
"We can control all the data in my IT infrastructure."
"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."
"Zimbra Collaboration's best feature is its compatibility with Microsoft's ActiveSync protocol, which allows users to use Outlook on Windows or MacOS."
"VMware Zimbra is an enterprise-class E-mail, calendar, and collaboration solution, built for both public and private clouds."
"The web interface is powerful and easy to use."
"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."
"This is a good email solution and it's open-source which is great and the most important feature for us."
 

Cons

"The solution is quite low-level and lacks some advanced features. For example, it doesn't provide tracking capabilities, such as knowing how many users opened an email, which is crucial for email marketing. You would need to integrate these analytics with other tools to get them. I need to know if there has been a bounce and how customers interacted with the email."
"Now, I'm not very happy because they are discontinuing the service, and I will have to find a new one to migrate everything, including all my filters and routing rules."
"I would like to see detailed reports on email success and failure rates."
"It would be nice if they had a what you say is what you get editor to build newsletters like MailChimp has."
"There is room for improvement in the scalability."
"The only issue is the price, which is far too expensive."
"WorkMail is not available in all the regions."
"When we first set up an email on Amazon SES, they had to verify it, which was not fast enough."
"File sharing permissions with Nextcloud integration need improvement."
"The solution could improve by making it easier to use."
"The solution could use more integration with third-party tools."
"The solution’s forums don't have much information or documentation on administration tasks."
"I can confidently say that Zimbra is good enough for 2,000 client users. But, at the same time, if my client needs more than that and we have two options—Zimbra or Microsoft—I'm going with Microsoft because many admins will speak to Microsoft's ability to handle that many."
"Zimbra Collaboration is expensive, and there is no perpetual license option."
"The antispam and antivirus features are hard to understand on mobile devices."
"We have had an issue with security."
 

Pricing and Cost Advice

"I rate the solution's pricing as one out of ten. It is close to being cheap. Sometimes, the tool offers a generous amount of free messages, up to 40,000, which is great for startups like ours. This means that we don't accumulate any costs for some months because we stay within the free usage tier. When we exceed the free allocation, the costs are reasonable, and no hidden charges exist."
"WorkMail does require a license, it is, per user."
"It's very cheap. The cheapest among all the services available."
"The solution should improve its price."
"The solution is competitively priced."
"If you choose the network edition, it is a little pricier. They have the open-source edition too which is only community supported."
"Zimbra Collaboration is expensive, and there is no perpetual license option."
"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."
"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."
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Top Industries

By visitors reading reviews
Comms Service Provider
10%
University
9%
Manufacturing Company
7%
Financial Services Firm
7%
Computer Software Company
9%
Outsourcing Company
9%
Comms Service Provider
8%
Construction Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise2
Large Enterprise5
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise3
Large Enterprise7
 

Questions from the Community

What needs improvement with Amazon WorkMail?
While using Amazon WorkMail over time, I haven't encountered substantial disappointments, but there have been usual glitches with the web interface. For instance, while the service is generally 99....
What advice do you have for others considering Amazon WorkMail?
When assessing the security features offered by Amazon WorkMail, such as encryption protocols, I check the security protocols on my phone using an external application that displays them immediatel...
What is your primary use case for Amazon SES?
My usual use cases for Amazon WorkMail started from my interest in all the AWS services, which are numerous, like hundreds, and how I could set up an online document service, something like Google ...
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

Amazon SES
No data available
 

Overview

 

Sample Customers

Expedia, Intuit, Royal Dutch Shell, Brooks Brothers
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 Amazon WorkMail vs. Zimbra Collaboration and other solutions. Updated: June 2026.
900,644 professionals have used our research since 2012.