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Microsoft Exchange Online vs Zarafa comparison

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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
93
Ranking in other categories
No ranking in other categories
Zarafa
Ranking in Email Applications
16th
Average Rating
8.0
Reviews Sentiment
4.5
Number of Reviews
2
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of November 2026, in the Email Applications category, the mindshare of Microsoft Exchange Online is 9.8%, down from 12.0% compared to the previous year. The mindshare of Zarafa is 1.9%, up from 0.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Applications Mindshare Distribution
ProductMindshare (%)
Microsoft Exchange Online9.8%
Zarafa1.9%
Other88.3%
Email Applications
 

Featured Reviews

Yogesh Autade - PeerSpot reviewer
Senior Security Engineer at Softcell Technologies Limited
Integrated email security has improved phishing response and provides better threat visibility
Microsoft Exchange Online could be improved with more intuitive administration workflows, better troubleshooting visibility, and simpler mail flow analysis for complex environments. We would also appreciate more granular reporting, faster access to detailed message tracking data, and improved alerting around suspicious mailbox activity to help security and messaging teams investigate issues more efficiently. One area where Microsoft Exchange Online could improve is the administrative user experience. Some advanced mail flow, compliance, and troubleshooting tasks still require navigating multiple Microsoft portals. A more unified management interface and deeper integration visibility across Exchange, Defender, and Microsoft 365 security tools would make day-to-day operations more efficient for administrators and SOC teams.
it_user302112 - PeerSpot reviewer
Senior Consultant IT Infrastructure at a tech consulting company with 51-200 employees
Our customers are able to use this groupware solution to connect to Active Directory and OpenLDAP, although Postgres support would be an improvement.
Zarafa has several very valuable features, among them a very good Outlook-like web interface. Furthermore, ZPush for talking between ActiveSync and mobile devices is a valuable asset. In addition, one is able to connect via Outlook and the exchange protocol to Zarafa. This makes Zarafa a free, and working, alternative to Microsoft Exchange.

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 feature of Microsoft Exchange Online is if you have people that are geographically distributed from each other is good. For example, if you have people in the United States, Europe, Africa, Asia, and Australia, having an online solution works best because then you can reach the scale of the data centers that are available by Microsoft. Additionally, if you're only going to have two to three people using the solution the cost is a lot less than having an onsite server and licensing. It is highly beneficial in these areas."
"Office 365 is one of the strongest solutions that I've seen."
"I have found the interface to be user-friendly and the overall simplicity valuable features."
"Overall, technical support is very good."
"The solution is scalable."
"I would rate Exchange Online's stability nine out of ten."
"When you used to write to someone, you would often begin typing their name and their email address would appear; you would simply click and you would have the correct email address. That has been working for a while, but having the location address appear was a pleasant surprise. It was amazing."
"It's not hard to set up."
"This makes Zarafa a free, and working, alternative to Microsoft Exchange."
 

Cons

"For non-technical people, some configurations might be a little bit difficult."
"This product is too complex to use."
"There is room for improvement in terms of optimization."
"The stability of the solution has room for improvement."
"The solution could be a bit cheaper."
"There are a lot of issues with security."
"I would like to have the option to have my electronic signature posted on my emails by default. I am able to add it manually but cannot get it by default."
"Encourages endless inefficient communications. Do not recommend it for companies that are trying to create efficient decision making processes and agile movement."
"Not really, although the Zarafa-index component was using a lot of memory and disk I/O bandwith."
 

Pricing and Cost Advice

"The solution costs $12 to $16 per user per month."
"There is a license for Microsoft Exchange Online and I have information on that, but there have been so many changes to the licensing and it's a completely different story nowadays. Microsoft has been pushing users to buy a package of products under one license. Users are becoming more dependent on Microsoft rather than independent, that you can't decide anymore, and from my point of view, that is bad."
"The costs of this platform vary based on subscriptions, but it is generally reasonable."
"We have an enterprise agreement for licensing."
"Our organization pays for a corporate license to use the solution."
"My company needs to make monthly payments towards the licensing costs attached to the product. I feel that the price of the product is affordable."
"I have no opinion."
"The cost of Microsoft Exchange Online is approximately $4 to $36 per user. They do not give a discount which is not good. The solution is expensive if you have 800 to 1,000 users. They should give discounts when you have a lot of users."
Information not available
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Top Industries

By visitors reading reviews
Manufacturing Company
11%
Outsourcing Company
9%
Comms Service Provider
9%
Financial Services Firm
8%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business41
Midsize Enterprise17
Large Enterprise41
No data available
 

Questions from the Community

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?
Microsoft Exchange Online could be improved with more intuitive administration workflows, better troubleshooting visibility, and simpler mail flow analysis for complex environments. We would also a...
What is your primary use case for Microsoft Exchange Online?
Microsoft Exchange Online serves as our enterprise email hosting platform, providing secure mail flow management and centralized messaging services for users across multiple locations. From a secur...
Ask a question
Earn 20 points
 

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
Tivoli, InterAkt Contour, Riagg Rijnmond, Lammerink, Revell, KMP, International School of the Hague
Find out what your peers are saying about Google, Microsoft, Amazon Web Services (AWS) and others in Email Applications. Updated: October 2026.
921,749 professionals have used our research since 2012.