IceWarp vs Zimbra Collaboration comparison

IceWarp and Zimbra are both solutions in the Email Applications category. IceWarp is ranked #10 with an average rating of 8.0, while Zimbra is ranked #6 with an average rating of 8.0. IceWarp holds a 4.8% mindshare in EA, compared to Zimbra’s 6.8% mindshare. Additionally, 90% of IceWarp users are willing to recommend the solution, compared to 96% of Zimbra users who would recommend it.

IceWarp

Read 17 IceWarp reviews

2,280 Views
1,664 Comparison Views

90% willing to recommend

Zimbra Collaboration

Read 28 Zimbra Collaboration reviews

2,581 Views
2,478 Comparison Views

96% willing to recommend

IceWarp

Zimbra Collaboration

Comparison Buyer's Guide

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Executive SummaryUpdated on May 21, 2025

Zimbra Collaboration and IceWarp compete in the collaborative software market. IceWarp appeals with its extensive feature set, while Zimbra attracts those looking for competitive pricing and support.

Features: Zimbra Collaboration is known for its comprehensive email and calendaring features with effective platform integration. The system is designed with real-time control through its management console, offering premium features like mobile management and seamless synchronization. It's valued for its open-source nature and customizable options, facilitating robust collaboration features. IceWarp provides strong email capabilities and an all-encompassing suite boasting instant messaging and video conferencing, alongside tools for smart document management and team chat features that enable file sharing and real-time collaboration.

Room for Improvement: Zimbra could enhance ease of use for non-technical users, improve its two-factor authentication system, and offer better document collaboration tools compared to cloud giants like Microsoft and Google. IceWarp faces challenges with the advancement of its document management tools, needs more comprehensive smart document archiving features, and could benefit from providing more extensive customization options beyond current implementations.

Ease of Deployment and Customer Service: Zimbra stands out with its open-source platform that supports scalability and benefits from a community-driven support mechanism. Its deployment is straightforward with comprehensive documentation. IceWarp offers a flexible deployment process with typically faster setup periods, complemented by professional customer service that assists with configuration and troubleshooting needs.

Pricing and ROI: Zimbra offers lower initial setup costs, appealing to budget-conscious buyers seeking quick ROI while maintaining high functionality standards. It provides an affordable alternative for organizations mindful of software expenses. IceWarp may involve higher initial investments, yet its extensive feature set is designed to provide substantial long-term ROI for businesses that value integrated communication solutions.

To learn more, read our detailed IceWarp vs. Zimbra Collaboration Report (Updated: April 2026).

Buyer's Guide

IceWarp vs. Zimbra Collaboration

April 2026

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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

IceWarp

Ranking in Email Applications

10th

Average Rating

8.4

Reviews Sentiment

7.0

Number of Reviews

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

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of April 2026, in the Email Applications category, the mindshare of IceWarp is 4.8%, down from 5.4% compared to the previous year. The mindshare of Zimbra Collaboration is 6.8%, down from 9.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Email Applications Mindshare Distribution
Product	Mindshare (%)
Zimbra Collaboration	6.8%
IceWarp	4.8%
Other	88.4%

Email Applications

Featured Reviews

AvinashLotke

Delivery Head at Team Computers

Useful for collaboration and storage but improvement is needed in API integration

The solution has traditional SSL integration, SAML, and Federation Services. In its latest version, it added SAML integration. However, it needs to work on API integration, especially for dashboards or integration with SAP for log and data system management. It doesn't yet have the kind of API that Google and Microsoft provide for synchronizing users with Active Directory. I think IceWarp needs to improve in a few areas. They have two types of admin consoles - a web-based one and a remote one. I'd like to see these combined into a single web-based admin console. The log reading and information system also needs improvement. The current way of showing incoming and outgoing logs isn't very clear. For new users, it's hard to understand these logs, especially compared to Office 365 and other systems with easier-to-read logs. They should also add an export option to get all logs with a single click whenever we need them.

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Muhammad Talha Baig

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.

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Quotes from Members

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

Pros

"The solution has a very good log-in to the UI when compared to other solutions."

"The solution's voice services work well for our company."

"The product is used very extensively in my company since we have around 1,500 users using it. Also, there is no requirement for any administrators to manage the product by the people who own the solution."

"IceWarp offers very extended cross-platform communication solutions."

"Its price is the most valuable. It is definitely one of the lowest price solutions."

"The solution is inexpensive which is its main benefit."

"The solution is easy to manage and includes features such as smart documents and the archiving of user data."

"Its price is the most valuable. It is definitely one of the lowest price solutions."

More IceWarp pros

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

"Network NG Modules are valuable to us."

"The web interface is powerful and easy to use."

"VMware Zimbra is an enterprise-class E-mail, calendar, and collaboration solution, built for both public and private clouds."

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

"I think Zimbra is more reliable and competitive than Microsoft because they offer an open-source version."

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

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

More Zimbra Collaboration pros

Cons

"I would like to have a trial for mobile applications and more documentation similar to Google Drive with mobile applications."

"Support should be improved. Most of the time, the queries are not resolved within the SLA."

"It is difficult to disable user rights on the console so some users accidentally delete their documents or user details."

"The solution should improve the mailing list feature. Google has a similar feature where you can automate sending files to different people in a sequence, but that feature is no longer available in the current version of IceWarp. Other features may also have been removed in the current version."

"Our customers sometimes have problems receiving mail."

"There are some feature improvements possible the way we use it as a hosting provider, but for most we currently have workarounds."

"The solution needs improvements in security, particularly regarding document management."

"The exchange compatibility mode is rather limited. Their technical support can also be better. They only provide online support, and there should be some option for escalating."

More IceWarp cons

"The support was lacking in my experience. However, recently the support I received was good. Perhaps they have improved."

"They should enhance its online meeting features."

"There are some security issues."

"Zimbra Collaboration's video conferencing could be improved."

"We had a couple of issues with stability, but nothing that I couldn't work around or fix myself. Zimbra is a powerful product, but since VMware bought it, changes and bug fixes have been very slow in coming."

"The installation is not straightforward, it can take two days for the full implementation."

"File sharing permissions with Nextcloud integration need improvement."

"It does have a few bugs."

More Zimbra Collaboration cons

Pricing and Cost Advice

"The solution is priced well."

"I would rate the pricing and eight out of ten."

"It is definitely one of the lowest price solutions."

"Our licensing is on a yearly basis. There were no additional costs."

"There are various licensing plans available based on geographic zone."

"The license is based on the number of users."

"Costs far less than other solutions."

"The solution is inexpensive which is its main benefit."

More IceWarp pricing and cost advice

"We do not pay for licenses to use this solution."

"We pay yearly licenses for Zimbra Collaboration."

"The solution is competitively priced."

"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."

"Zimbra Collaboration is expensive, and there is no perpetual license option."

"The solution is not expensive compared to other products."

"We are using perpetual licenses. We have deployed it in our local data center, and we buy perpetual licenses on a per-user basis."

More Zimbra Collaboration pricing and cost advice

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Top Industries

By visitors reading reviews

Computer Software Company

15%

Manufacturing Company

12%

Comms Service Provider

11%

Financial Services Firm

Computer Software Company

10%

Comms Service Provider

10%

Government

Outsourcing Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	12
Midsize Enterprise	4
Large Enterprise	5

By reviewers
Company Size	Count
Small Business	19
Midsize Enterprise	3
Large Enterprise	7

Questions from the Community

What is your experience regarding pricing and costs for IceWarp?

IceWarp was very cost-effective, offering services at a significantly lower cost than Google, which was appealing for our organization.

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What needs improvement with IceWarp?

The solution needs improvements in security, particularly regarding document management. Users currently have the rights to delete smart documents, which poses a challenge for administrators. A mor...

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What is your primary use case for IceWarp?

We managed approximately one thousand user accounts with IceWarp for company communications. We utilized features such as smart attachments and document solutions. Our setup was primarily on-premis...

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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...

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What is your experience regarding pricing and costs for Zimbra Collaboration?

The solution is competitively priced.

See all answers

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...

See all answers

Comparisons

Zoho Mail vs IceWarp

Compared 13% of the time

Google Workspace vs IceWarp

Compared 11% of the time

Microsoft Exchange vs IceWarp

Compared 9% of the time

Microsoft Exchange Online vs IceWarp

Compared 9% of the time

KerioConnect vs IceWarp

Compared 7% of the time

More IceWarp Competitors

Open-Xchange vs Zimbra Collaboration

Compared 18% of the time

Microsoft Exchange vs Zimbra Collaboration

Compared 17% of the time

Google Workspace vs Zimbra Collaboration

Compared 10% of the time

Microsoft Exchange Online vs Zimbra Collaboration

Compared 10% of the time

HCL Domino vs Zimbra Collaboration

Compared 5% of the time

More Zimbra Collaboration Competitors

Product Reports

Buyer's Guide

IceWarp

April 2026

Download IceWarp product report

Buyer's Guide

Zimbra Collaboration

March 2026

Download Zimbra Collaboration product report

Overview

IceWarp helps thousands of organizations streamline all areas of business communication and become more profitable by providing Mail Server complete with GroupWare, Calendaring and Document Management, accessible through an intuitive WebClient, simple to setup in WebAdmin. Customize with add-ons: spam and virus protection, Instant Messaging with video calls, mobile sync and more.

IceWarp

Zimbra Collaboration provides administrators and their end users innovative features that solve the challenges faced by organizations using today's legacy communications infrastructure.

Zimbra

Sample Customers

Marriott, Toyota, Sony, Wendy's, Canon

NEC Biglobe, City of Ventura, Monterey Bay Aquarium Research Institute, Hola Publishing, BIG, Sleepwell, LaFayette College, Xmission, DNA, Ring Line, Future Group, TIGC

Buyer's Guide

IceWarp vs. Zimbra Collaboration

April 2026

Free Report: IceWarp vs. Zimbra Collaboration

Find out what your peers are saying about IceWarp vs. Zimbra Collaboration and other solutions. Updated: April 2026.

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