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

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

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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

Cloudflare One

Mindshare comparison

As of March 2026, in the Email Security category, the mindshare of Cloudflare One is 1.5%, down from 1.8% compared to the previous year. The mindshare of Kaspersky Security for Mail Server is 0.7%, down from 0.9% compared to the previous year. The mindshare of Microsoft Exchange Online Protection (EOP) is 4.1%, down from 7.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Email Security Mindshare Distribution
Product	Mindshare (%)
Microsoft Exchange Online Protection (EOP)	4.1%
Cloudflare One	1.5%
Kaspersky Security for Mail Server	0.7%
Other	93.7%

Email Security

Featured Reviews

Cobe Van Coller

Network Architect at IP Dimension

Cloud security has improved remote access and has reduced costs for smaller client sites

I have used Cloudflare One's Identity-Aware Proxy, and it is quite straightforward from what I have seen so far. The app registration on the Azure side integrates fully into Cloudflare, and I am very satisfied with that part because it is easy to set up. The integration of Cloudflare One's Secure Web Gateway and Zero Trust Network Access works without any issues. That part is pretty automatic, and if you complete the rest of the setup, it comes together by itself with no issues from my side. What makes it nice is that we can actually start replacing on-site firewalls at this stage for the smaller clients because it does not matter if they go to a coffee shop or work from home; they are still secured by the same connection. The hops get shorter and you get better latency. We have done testing to see if it is better. One thing that we did notice with our proof of concept with our current client is that they have people connecting from the UK. When they used their previous VPN solution, uploading CAD drawings and other files to the server took a long time. They mentioned that it is much quicker on Cloudflare One's solution. I definitely believe that is part of the improved performance, and I am satisfied with that as well. What is nice about Cloudflare One is that it makes the setup easier and also easier to train technicians to maintain it. Compared to legacy systems, we do not need to get fancy firewalls in place that are costly. That is definitely also a cost-saver with Cloudflare One.

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KamranBhatti

Network Engineer at a computer software company with 11-50 employees

Provides reliable real-time email protection and offers competitive pricing features

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 better than other competitor software. Kaspersky Security for Mail Server has support for Windows and Linux, but regarding improvement, I have to dig deep and will have to do research on that. I have not checked into much detail about what can be better in Kaspersky Security for Mail Server. I have checked in general. If given some time, I can check and compare with other solutions. Regarding Kaspersky Security for Mail Server, I have found this is quite a good solution. It has a good response and good detection capability. I have not checked other products, so I cannot give any detailed or specific feedback regarding that. From what I have checked from Kaspersky mail security, it is satisfactory.

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NancyHartman

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.

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Quotes from Members

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

Pros

"It will take the blow rather than our applications should an attack occur."

"It is a stable solution."

"Cloudflare DDoS mitigates DDoS attacks."

"What makes it nice is that we can actually start replacing on-site firewalls at this stage for the smaller clients because it does not matter if they go to a coffee shop or work from home; they are still secured by the same connection."

"Cloudflare Access is part of the Zero Trust philosophy."

"It's the endpoint exposition. We don't need to expose our VPN server to the internet and need a zero-test solution. I can apply some conditional access to the endpoint that's connecting to our network to check their security policies or the security condition of their workstation. Once the workstation is trying to connect to my internal network, then I would like to check the discrete condition of these endpoints that are trying to access my internal network. We created some conditional access. We have CrowdStrike, to check if the CrowdStrike is installed, to check if it's updated, and to check for Windows updates. We created some conditional policies to check it."

"The blocking feature is very good."

"The simplicity of the solution is its valuable features as almost no effort was needed to learn the configurations. It is also one of the cheapest firewalls available in this category."

More Cloudflare One pros

"The most valuable feature is the straightforward setup."

"The integration rate is very high in Kaspersky, which is why most of our customers like it."

"The most valuable features are the anti-phishing and anti-spam capabilities."

"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 most valuable feature of the solution stems from the fact that it is a highly reliable and dependable solution."

"We have achieved cost savings of up to thirty percent by using Kaspersky Security for Mail Server."

"I find the product valuable because it provides easy integration with other platforms like Fortinet firewalls."

"The threat management feature includes policies and alerts that are valuable."

"In general, my company is happy with Microsoft support...My company hasn't faced any stability issues with the solution."

"We use the solution in all our environments. We use it for remedy tickets and give them updates. It was our main communication point."

"It is scalable."

"The scalability is pretty good; it does what it is supposed to do."

"The initial setup of Microsoft Exchange Online Protection was easy."

"The initial setup was easy. The configuration process is very straightforward."

"The security features provided by Microsoft are robust."

More Microsoft Exchange Online Protection (EOP) pros

Cons

"The software has automated alerts, but the automated alerts are not available in the mobile app."

"Feedback could be enhanced. While I work efficiently with Clover as a partner in Mexico City, sometimes the information and requests are easier to manage with more concrete solutions."

"From a logging perspective, it is still a bit difficult to see exactly what users are being blocked with the current views."

"For the topic of improvement, providing some training material is one of my suggestions."

"The free plan has limitations. For example, I can only set up three rules, and the application firewall is unavailable."

"Our customers no longer use Cloudflare because its service is subpar."

"Feedback could be enhanced."

"The onboarding process can be improved a little bit."

More Cloudflare One cons

"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 solution is not 100 percent stable and that can use improvement."

"Kaspersky lacks in the area of customization, so simpler customization options need to be provided to 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."

"Encrypted email attachments are not being monitored by this solution, which is an area that they need to work on."

"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."

"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."

"We would like the solution to have more in-built intelligence in the way that it reviews potential security risks, rather than our team constantly having to update the policies."

"Some features, like encryption, are not available."

"Some of the searchability when looking for specifics in Exchange logs is tedious."

"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."

"They should specify the difference between Defender for Office 365 and Exchange Online Protection."

"The solution lacks to elaborate on its spam policies."

"It wasn't easy or intuitive enough for me to start using it. So, the reason was that the solution changed."

"The tool's classification for bulk email is cumbersome."

More Microsoft Exchange Online Protection (EOP) cons

Pricing and Cost Advice

"The pricing of the solution is cheap. The licensing cost is also very low. I rate the cost and pricing a three out of ten."

"The prices are slightly expensive."

"My company has to make yearly payments towards the licensing costs attached to the solution. There are no hidden charges apart from the licensing costs of the solution."

"The solution's pricing lacks transparency."

"The price tag is no longer $200,000, but rather $300,000 to $400,000. It's twice."

"The pricing is somewhere in the middle. I would rate the pricing a seven out of ten."

"The solution is not that expensive."

"Cloudflare Zero Trust Platform's pricing is good."

"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."

"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."

"The price could be lower."

"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 is priced high and could be less expensive compared to other solutions."

"On a scale of one to ten, where one is cheap, and ten is very expensive, I rate the pricing a six. For licensing, we can make monthly or yearly payments. Right now, we pay 5 USD per month to secure a person's license."

"The solution falls on the higher or more expensive side of the spectrum."

"The price of Microsoft Exchange Online Protection is reasonable."

"Microsoft Exchange Online Protection is a good solution at an affordable price. It is a good investment."

"The pricing for the solution depends on what you are trying to achieve with the use of the product, but I know that it is not a cheaply priced product. Yearly payments have to be made towards the licensing fees of the solution."

More Microsoft Exchange Online Protection (EOP) pricing and cost advice

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Use our free recommendation engine to learn which Email Security solutions are best for your needs.

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884,933 professionals have used our research since 2012.

Top Industries

By visitors reading reviews

Comms Service Provider

10%

Computer Software Company

Financial Services Firm

Manufacturing Company

Computer Software Company

11%

Retailer

10%

Manufacturing Company

Non Profit

Computer Software Company

10%

Financial Services Firm

10%

Manufacturing Company

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	10
Midsize Enterprise	2
Large Enterprise	10

By reviewers
Company Size	Count
Small Business	6
Large Enterprise	3

By reviewers
Company Size	Count
Small Business	24
Midsize Enterprise	7
Large Enterprise	11

Questions from the Community

What needs improvement with Cloudflare Access?

Cloudflare Access has strong integration with Microsoft, among other platforms. However, when it comes to Kaspersky, ...

What is your primary use case for Cloudflare Access?

Cloudflare Access provides secure access to internal applications for employees, external members of the organization...

What advice do you have for others considering Cloudflare Access?

Cloudflare Access is one of the best integrations available. While about two hundred vendors offer similar services, ...

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 a...

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 provid...

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 ...

What do you like most about Microsoft Exchange Online Protection?

The initial setup was easy. The configuration process is very straightforward.

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 ...

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,...

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FortiSASE vs Cloudflare One

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Twingate vs Cloudflare One

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Barracuda Email Security Gateway vs Kaspersky Security for Mail Server

Compared 11% of the time

Security Gateway vs Kaspersky Security for Mail Server

Compared 11% of the time

Fortinet FortiMail vs Kaspersky Security for Mail Server

Compared 9% of the time

Microsoft Defender for Office 365 vs Kaspersky Security for Mail Server

Compared 9% of the time

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Proofpoint Email Protection vs Microsoft Exchange Online Protection (EOP)

Compared 8% of the time

Fortinet FortiMail vs Microsoft Exchange Online Protection (EOP)

Compared 7% of the time

Cisco Secure Email vs Microsoft Exchange Online Protection (EOP)

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Microsoft Defender for Office 365 vs Microsoft Exchange Online Protection (EOP)

Compared 6% of the time

Mimecast Email and Collaboration Threat Protection vs Microsoft Exchange Online Protection (EOP)

Compared 5% of the time

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Product Reports

Cloudflare One

Download Cloudflare One product report

Download Kaspersky Security for Mail Server product report

Email Security

February 2026

Kaspersky Security for Mail Server report

Microsoft Exchange Online Protection (EOP)

Download Microsoft Exchange Online Protection (EOP) product report

Microsoft Exchange Online Protection (EOP) report

Also Known As

Cloudflare Area 1 Email Security, Cloudflare Bot Management, Cloudflare Gateway, Cloudflare Zero Trust Platform, Cloudflare DDoS, Cloudflare SASE & SSE Platform

No data available

Microsoft EOP, MS Exchange Online Protection

Overview

Cloudflare One is a comprehensive platform for security, performance, and connectivity. It provides features like rate limiting, DDoS protection, and application access, tailored to enhance user experience while securing internet access and accelerating communications.

Designed to integrate security measures with ease of use and scalability, Cloudflare One offers a secure web gateway and zero trust network access. These features ensure seamless setup and operation, making connectivity reliable and protected. Users appreciate its integrated console, intuitive interface, and the ability to manage risk effectively. It offers straightforward deployment, improves latency, and boasts cost-effectiveness. While its onboarding process and documentation need enhancement, its value in content delivery and application shielding is notable. Despite challenges in integrating Cloudflare Access with existing VPNs and the need for better automation and support, it remains vital for DNS and infrastructure protection.

What features make Cloudflare One stand out?

Rate Limiting: Controls the traffic rate to prevent abuse.
DDoS Protection: Shields applications from distributed denial-of-service attacks.
Secure Web Gateway: Provides secure internet access with seamless operation.
Zero Trust Network Access: Ensures secure, application-based connectivity without relying on traditional VPNs.
Access for Connectivity: Facilitates access to internal applications securely.

What benefits should users look for in reviews?

Security: Robust measures for DNS and browsing protection.
Performance: Enhanced site accessibility and communication speed.
Cost-Effectiveness: Offers competitive pricing for its features.
Ease of Deployment: Straightforward and efficient setup process.

In industries like finance, retail, and technology, Cloudflare One is crucial for enabling secure remote access and protecting web applications against dynamic threats. It supports compliance access policies and enhances content delivery, playing a key role in safeguarding digital infrastructure.

Cloudflare

Email is the number one vector used by cybercriminals to penetrate and attack enterprise IT systems.

Kaspersky Security for Mail Server uses Next Generation technologies including advanced heuristics, machine learning and sandboxing to detect and protect against ransomware, spam, phishing, data loss and even unknown threats penetrating your IT systems through emails and malicious attachments.

Kaspersky

Microsoft Exchange Online Protection (EOP) is a comprehensive email filtering and security service designed to protect organizations from spam, malware, and other email-based threats. It provides advanced threat protection, anti-malware and anti-spam filtering, and data loss prevention capabilities.

With EOP, organizations can ensure the security and integrity of their email communications. It uses multiple layers of filtering and scanning to detect and block malicious content, including phishing attempts, viruses, and ransomware. EOP also leverages machine learning and artificial intelligence to continuously improve its threat detection capabilities.

In addition to its robust security features, EOP offers advanced anti-spam filtering to reduce unwanted and unsolicited emails. It uses a combination of reputation-based filtering, content filtering, and sender authentication techniques to identify and block spam messages.

EOP also includes data loss prevention (DLP) capabilities to prevent sensitive information from being leaked or shared inappropriately. It allows organizations to define policies to detect and prevent the transmission of sensitive data, such as credit card numbers or social security numbers, via email.

Furthermore, EOP integrates seamlessly with Microsoft Exchange Online and other Office 365 services, providing a unified and integrated email security solution. It can be easily managed through the Exchange admin center, allowing administrators to configure and monitor security settings, review reports, and manage quarantined emails.

Microsoft

Sample Customers

23andMe

Vimpel Com, Estrella Galicia, Krombacher

Information Not Available

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