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ProtonMail vs Zimbra Collaboration comparison

 

Comparison Buyer's Guide

Executive Summary

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

ProtonMail
Ranking in Email Applications
10th
Average Rating
8.6
Reviews Sentiment
8.0
Number of Reviews
2
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
29
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2025, in the Email Applications category, the mindshare of ProtonMail is 5.9%, up from 3.6% compared to the previous year. The mindshare of Zimbra Collaboration is 8.6%, down from 9.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Applications
 

Featured Reviews

Secure email communication facilitates safe financial exchanges and enhances data privacy
I use ProtonMail for exchanging invoicing with clients, managing financial information, and receiving notifications from bank accounts and investment brokers. It's dedicated to high-importance communication involving financial information The auto encryption of attachments is valuable. ProtonMail…
Vidya Shree - PeerSpot reviewer
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

"What I appreciate most about ProtonMail is that they are trusted, which is why I choose them."
"The auto encryption of attachments is valuable."
"The stability is good and keeps getting better with each new update."
"The solution is easy to implement."
"Good email solution and it's open-source."
"Network NG Modules are valuable to us."
"Zimbra Collaboration has integrated a lot of their party tools and they have good documentation available."
"The product is easy to set up."
"A lot of other products like Microsoft Exchange offer email or collaboration features, but they are not as fast as Zimbra."
"The backup and storage management features of Zimbra Collaboration are valuable."
 

Cons

"I think it is good but I feel that only tech-savvy people use ProtonMail. It is not that popular among other people."
"One improvement could be the integration between ProtonMail and Proton Pass, allowing sharing of specific secrets via email."
"The antispam and antivirus features are hard to understand on mobile devices."
"There are some security issues."
"The support was lacking in my experience. However, recently the support I received was good. Perhaps they have improved."
"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."
"Zimbra Collaboration does not have a solution roadmap as aggressive as the new collaboration mail solutions. Additionally, they can have a better interface and integration with single sign-on."
"The product must be more customizable."
"I would like to see a Microsoft schedule function added."
 

Pricing and Cost Advice

Information not available
"The solution is competitively priced."
"Zimbra Collaboration offers a good price-to-feature ratio."
"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."
"There is an annual standard licensing fee to use Zimbra Collaboration and there is no other cost."
"We pay yearly licenses for Zimbra Collaboration."
"On a scale of one to ten, where one is cheap, and ten is expensive, I rate the price a four"
"It's very expensive. When we compare the cost with Google Workspace, it's so expensive."
"Zimbra Collaboration is expensive, and there is no perpetual license option."
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Top Industries

By visitors reading reviews
Computer Software Company
15%
Educational Organization
12%
Comms Service Provider
12%
Media Company
6%
Computer Software Company
19%
Comms Service Provider
9%
Government
7%
Financial Services Firm
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for ProtonMail?
The pricing is competitive, offering good value on the average plan. It’s approximately $100 for annual billing.
What needs improvement with ProtonMail?
The UI was previously cumbersome, however, it has improved. One improvement could be the integration between ProtonMail and Proton Pass, allowing sharing of specific secrets via email. However, thi...
What is your primary use case for ProtonMail?
I use ProtonMail for exchanging invoicing with clients, managing financial information, and receiving notifications from bank accounts and investment brokers. It's dedicated to high-importance comm...
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.
 

Overview

 

Sample Customers

Wall street journal,The New york times, The Gurdian, Forbes, Fox News
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 Google, Microsoft, Amazon Web Services (AWS) and others in Email Applications. Updated: June 2025.
856,873 professionals have used our research since 2012.