ProtonMail vs Zimbra Collaboration comparison

Proton Technologies and Zimbra are both solutions in the Email Applications category. Proton Technologies is ranked #10 with an average rating of 9.0, while Zimbra is ranked #5 with an average rating of 8.0. Proton Technologies holds a 4.2% mindshare in EA, compared to Zimbra’s 9.1% mindshare. Additionally, 50% of Proton Technologies users are willing to recommend the solution, compared to 96% of Zimbra users who would recommend it.

ProtonMail

Read 1 ProtonMail review

1,079 Views
999 Comparison Views

50% willing to recommend

Zimbra Collaboration

Read 29 Zimbra Collaboration reviews

3,148 Views
2,419 Comparison Views

96% willing to recommend

ProtonMail

Zimbra Collaboration

Comparison Buyer's Guide

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Executive Summary

We performed a comparison between ProtonMail and Zimbra Collaboration based on real PeerSpot user reviews.

Find out what your peers are saying about Google, Microsoft, Amazon Web Services (AWS) and others in Email Applications.

To learn more, read our detailed Email Applications Report (Updated: February 2025).

Buyer's Guide

Email Applications

February 2025

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Helped 839,319 peers since 2012

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

9.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Zimbra Collaboration

Ranking in Email Applications

5th

Average Rating

8.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of March 2025, in the Email Applications category, the mindshare of ProtonMail is 4.2%, up from 4.0% compared to the previous year. The mindshare of Zimbra Collaboration is 9.1%, down from 10.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Email Applications

Featured Reviews

Vitor Vicente

Works

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…

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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.

Read full review

Quotes from Members

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

Pros

"The auto encryption of attachments is valuable."

"We can control all the data in my IT infrastructure."

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

"Zimbra Collaboration is a good tool for video calls...Zimbra Collaboration's initial setup phase was easy."

"Good email solution and it's open-source."

"The most valuable feature of Zimbra for our team's productivity is its efficiency in handling email communication."

"The most valuable feature of Zimbra Collaboration is the cost."

"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 product is easy to set up."

More Zimbra Collaboration pros

Cons

"One improvement could be the integration between ProtonMail and Proton Pass, allowing sharing of specific secrets via email."

"The tool should improve its multi-cloud feature."

"We have had an issue with security."

"File sharing permissions with Nextcloud integration need improvement."

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

"The antispam and antivirus features are hard to understand on mobile devices."

"In the next release, Zimbra Collaboration should include a security feature to allow access for mobile device administrators."

"They should enhance its online meeting features."

"Zimbra Collaboration could improve the migration from a basic solution to a more containerized solution. For example, the installation should be able to extend to the containers and manage them with some solution, such as OpenShift or Kubernetes."

More Zimbra Collaboration cons

Pricing and Cost Advice

Information not available

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

"If you choose the network edition, it is a little pricier. They have the open-source edition too which is only community supported."

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

"Zimbra Collaboration offers a good price-to-feature ratio."

"I use Zimbra Collaboration's community version. We may move to the enterprise version since prices are affordable."

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

"It's very expensive. When we compare the cost with Google Workspace, it's so expensive."

"We pay yearly licenses for Zimbra Collaboration."

More Zimbra Collaboration pricing and cost advice

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839,319 professionals have used our research since 2012.

Top Industries

By visitors reading reviews

Computer Software Company

14%

Educational Organization

13%

Comms Service Provider

Media Company

Computer Software Company

19%

Government

Comms Service Provider

Financial Services Firm

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.

See all answers

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...

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What is your primary use case for ProtonMail?

See all answers

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 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.

See all answers

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

The solution is competitively priced.

See all answers

Comparisons

Google Workspace vs ProtonMail

Compared 47% of the time

Zoho Mail vs ProtonMail

Compared 16% of the time

Microsoft Exchange vs ProtonMail

Compared 13% of the time

Microsoft Exchange Online vs ProtonMail

Compared 12% of the time

More ProtonMail Competitors

Microsoft Exchange vs Zimbra Collaboration

Compared 31% of the time

Open-Xchange vs Zimbra Collaboration

Compared 22% of the time

KerioConnect vs Zimbra Collaboration

Compared 15% of the time

IceWarp vs Zimbra Collaboration

Compared 8% of the time

More Zimbra Collaboration Competitors

Product Reports

Buyer's Guide

Email Applications

February 2025

Download ProtonMail product report

Buyer's Guide

Zimbra Collaboration

February 2025

Download Zimbra Collaboration product report

Overview

ProtonMail is the world‘s largest encrypted email provider, with over 11 million users trusting us to secure their data every day. We are the email service of choice for security-conscious enterprises.

Proton Technologies

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

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: February 2025.

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We monitor all Email Applications reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.