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Kaspersky Security for Mail Server vs Microsoft Exchange Online Protection (EOP) comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Nov 8, 2026

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

Kaspersky Security for Mail...
Ranking in Email Security
29th
Average Rating
7.6
Reviews Sentiment
6.8
Number of Reviews
8
Ranking in other categories
Secure Email Gateway (SEG) (10th)
Microsoft Exchange Online P...
Ranking in Email Security
10th
Average Rating
8.2
Reviews Sentiment
6.6
Number of Reviews
42
Ranking in other categories
Anti-Malware Tools (14th)
 

Mindshare comparison

As of November 2026, in the Email Security category, the mindshare of Kaspersky Security for Mail Server is 0.9%, up from 0.6% compared to the previous year. The mindshare of Microsoft Exchange Online Protection (EOP) is 3.0%, down from 4.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security Mindshare Distribution
ProductMindshare (%)
Microsoft Exchange Online Protection (EOP)3.0%
Kaspersky Security for Mail Server0.9%
Other96.1%
Email Security
 

Featured Reviews

ZS
Systems Specialist/ Administrator at ALFA International Company Limited.
User interface updates needed but achieves cost savings and threat protection
We are using Kaspersky Security for Mail Server to enhance our email system’s security and protect against threats Kaspersky Security for Mail Server handles spam and phishing attempts well. I have not experienced any spam issues. Its malware detection effectively manages the security of our…
NancyHartman - PeerSpot reviewer
Business Process Manager/ Educational Technologist at a educational organization with 1,001-5,000 employees
Layered email security has protected sensitive research and still flags phishing in real time
The valuable features of Microsoft Exchange Online Protection (EOP) include providing an additional layer of protection, as it builds on the basic Exchange level of security that allows us to get our work done. Another feature I appreciate is the ability to question things, as our Exchange server allows us to identify in real-time if an email is a phishing email or spam email. It really helps us identify risks, especially through our external exchanges via email or through our cloud-based platforms. Our Exchange system blocks any embedded AI from all our applications and products, so we cannot use embedded AI in our daily work from our official laptops because we have secure information. The system is quite locked down.

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 the solution stems from the fact that it is a highly reliable and dependable solution."
"With both of them working together, we have the perfect solution for mail."
"Kaspersky Security for Mail Server provides protection against email spams and blacklisted emails which are suspicious, making it a good product."
"You can install the plugins on the same machine hosting your exchange solution. It's a good complement for Sophos security, which scans the traffic before it reaches your mail service. Kaspersky is on the mail server itself while Sophos handles the incoming traffic. With both of them working together, we have the perfect solution for mail."
"The integration rate is very high in Kaspersky, which is why most of our customers like it."
"The primary use case of this solution is to filter emails and only allow the legitimate ones through."
"The most valuable feature is the straightforward setup."
"The most valuable features are the anti-phishing and anti-spam capabilities."
"It offers great security against malware and other threats."
"The valuable features of Microsoft Exchange Online Protection (EOP) include providing an additional layer of protection, as it builds on the basic Exchange level of security that allows us to get our work done."
"Microsoft Exchange Online Protection (EOP) is used essentially for email filtering, acting as an anti-spam and security product for email."
"The solution's stability is very, very good. I didn't face any problems in the last year."
"You can use the product to create special accounts."
"The most valuable feature is the ease of administration. Other solutions require complex administration, but Microsoft Exchange Online Protection is easier."
"We use the solution to receive emails. We do not use the calendar function as our clients are slow adaptors to the latest features."
"The initial setup is just a standard process."
 

Cons

"I rated the overall solution a five out of ten. If a user is looking for a low-budget solution with mid-level security without AI features, Kaspersky Security for Mail Server is suitable."
"Sometimes Sophos has the patch to block a novel threat, but Kaspersky doesn't."
"Encrypted email attachments are not being monitored by this solution, which is an area that they need to work on."
"I have only made contact via email, and it is a little slow. I would give customer service a rating of six or seven. Improving Spanish support would greatly benefit users."
"The biggest problem in the solution is related to its license renewal since it is pretty hard in Kaspersky to find out the procedure to renew a license."
"Kaspersky lacks in the area of customization, so simpler customization options need to be provided to users."
"The stability of Kaspersky Security for Mail Server is okay, not so much of an issue."
"It would be great if Kaspersky could do what Sophos does for us. However, we love having these two different technologies doing the same thing. Sometimes Sophos has the patch to block a novel threat, but Kaspersky doesn't."
"The biggest issue that I experience is that Microsoft keeps moving things around, and it's very inconsistent as to where you find the information when you're trying to work on different pieces."
"The price of Microsoft Exchange Online Protection could be reduced to make it more competitive."
"The solution lacks to elaborate on its spam policies."
"When the product is being updated, it changes some of the setups. The support team is also not good."
"The price could be lower."
"It wasn't easy or intuitive enough for me to start using it. So, the reason was that the solution changed."
"The management interface of Microsoft Exchange Online Protection (EOP) could be intuitive."
"Some of the searchability when looking for specifics in Exchange logs is tedious."
 

Pricing and Cost Advice

"The solution is not expensive."
"The solution offers one of the best prices possible to its users, making it even better than Barracuda. Kaspersky Security for Mail Server is ten times cheaper than Barracuda."
"My company makes annual payments towards the licensing costs solution."
"Price-wise, I would rate this product a four out of five. It could be a bit cheaper."
"Regarding the price, it's comparable to other service providers. We've also looked at Check Point's offerings, and the pricing doesn't seem to be an issue."
"The solution's pricing is subscription-based rather than a yearly licensing cost. Pricing is based on the size of the environment and company and can be expensive."
"The price could be lower."
"Microsoft Exchange Online Protection's pricing is a little bit more because its price has recently increased."
"The price of Microsoft Exchange Online Protection is reasonable."
"The product is bundled with Microsoft 365."
"The solution is priced high and could be less expensive compared to other solutions."
"The pricing of the solution is reasonable."
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Top Industries

By visitors reading reviews
Construction Company
11%
Educational Organization
9%
Comms Service Provider
9%
Outsourcing Company
8%
Financial Services Firm
12%
Comms Service Provider
9%
Manufacturing Company
9%
Government
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business6
Large Enterprise3
By reviewers
Company SizeCount
Small Business23
Midsize Enterprise6
Large Enterprise13
 

Questions from the Community

What is your experience regarding pricing and costs for Kaspersky Security for Mail Server?
The pricing is moderate. It is not expensive but not cheap either. For Mexico, a good price is about 20 dollars per agent.
What needs improvement with Kaspersky Security for Mail Server?
Regarding Kaspersky Security for Mail Server, I have not compared with other solutions, but I will compare and provide feedback. It is a reliable and fast security solution, and I can say it blocks...
What is your primary use case for Kaspersky Security for Mail Server?
I work on a mail protection service, specifically Kaspersky Security for Mail Server. I work with Kaspersky Security for Mail Server.
What needs improvement with Microsoft Exchange Online Protection?
From an end-user point of view, I am quite happy with Microsoft Exchange Online Protection (EOP) because my favorite feature is the ease with which I can identify if an email is a phishing email or...
What is your primary use case for Microsoft Exchange Online Protection?
Microsoft Exchange Online Protection (EOP) serves as the main use case for my company because, as a research company, we require a very high level of security. We use multiple authentication method...
What advice do you have for others considering Microsoft Exchange Online Protection?
My experience with Microsoft Exchange Online Protection (EOP) is from an end-user perspective, and I do not have admin management experience. I am not familiar with the Advanced Threat Protection f...
 

Also Known As

No data available
Microsoft EOP, MS Exchange Online Protection
 

Overview

 

Sample Customers

Vimpel Com, Estrella Galicia, Krombacher
Information Not Available
Find out what your peers are saying about Kaspersky Security for Mail Server vs. Microsoft Exchange Online Protection (EOP) and other solutions. Updated: November 2026.
920,939 professionals have used our research since 2012.