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Microsoft Exchange Online vs Zarafa 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

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 August 2026, in the Email Applications category, the mindshare of Microsoft Exchange Online is 9.6%, down from 13.0% compared to the previous year. The mindshare of Zarafa is 1.7%, up from 0.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Applications Mindshare Distribution
ProductMindshare (%)
Microsoft Exchange Online9.6%
Zarafa1.7%
Other88.7%
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 solution is easy to use and the cloud version has taken a lot of challenges away from the user."
"The product is stable and provides good performance."
"Microsoft Exchange Online is easy to use. You have a common storage where people can store documents. It also helps with version control."
"The product’s most valuable feature is the online archive."
"From the security point of view, you can specify the IP range from the area your system should be connected, and you can have the authentication based on the user certificates of your Active Directory, which improves the security, as well, and there is a flawless integration."
"Microsoft Exchange Online Protection helps by providing cloud-based security."
"The most valuable feature as it encompasses all aspects of collaboration, communication, reporting, and storage."
"Microsoft Exchange Online has positively impacted our organization by improving our email reliability, security, and operational efficiency across the organization."
"This makes Zarafa a free, and working, alternative to Microsoft Exchange."
 

Cons

"They should tighten their cloud security."
"Microsoft Exchange Online can improve message delivery. There are times we receive a message that the email failed to be delivered, and there is no reason given. We sometimes have emails that are flagged as spam that are not. We cannot do anything about it because it's not managed by us, it's managed by Microsoft."
"It should integrate better with social media formats."
"We'd like to see more integration with other platforms."
"It will be much better if the tool is integrated with OpenAI."
"The price of the solution could be less expensive."
"The cost is very high, and not every customer can afford licenses."
"We would like to have more automation with Microsoft Exchange Online."
"Not really, although the Zarafa-index component was using a lot of memory and disk I/O bandwith."
 

Pricing and Cost Advice

"We bought some licenses, and some are within our package or partnership with Microsoft."
"The pricing for Microsoft Exchange Online is quite reasonable, in my opinion. Many licensing options are available so that we can choose based on the customer's needs. For example, if a customer only requires mailbox features, we can recommend Plan One or Plan 2. We can suggest an E3 or E5 license if they need the entire Office suite. There are also premium subscriptions for enterprise customers, offering additional security features. Overall, I don't find the pricing costly because Microsoft provides many features and security capabilities, making it reliable for all customers, depending on their requirements."
"The license for the solution is cheap, but it could be more affordable in the long term."
"The product is expensive and has an annual subscription."
"The solution costs $12 to $16 per user per month."
"The pricing is really high. It's higher compared to other services."
"The price of the license depends on a lot of factors, such as the number of licenses and company specifics."
"It is a cluster solution."
Information not available
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Top Industries

By visitors reading reviews
Comms Service Provider
9%
Financial Services Firm
9%
Manufacturing Company
7%
Construction Company
7%
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: August 2026.
909,679 professionals have used our research since 2012.