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Kaspersky Security for Mail Server vs Trellix Email Security comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jan 18, 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

Cloudflare One
Sponsored
Ranking in Email Security
20th
Average Rating
8.6
Reviews Sentiment
6.5
Number of Reviews
23
Ranking in other categories
Secure Web Gateways (SWG) (13th), Data Loss Prevention (DLP) (22nd), Cloud Access Security Brokers (CASB) (13th), Distributed Denial-of-Service (DDoS) Protection (9th), Software Defined WAN (SD-WAN) Solutions (12th), Access Management (11th), Bot Management (3rd), ZTNA as a Service (9th), ZTNA (4th), Secure Access Service Edge (SASE) (9th), Remote Browser Isolation (RBI) (3rd)
Kaspersky Security for Mail...
Ranking in Email Security
27th
Average Rating
7.6
Reviews Sentiment
6.8
Number of Reviews
8
Ranking in other categories
Secure Email Gateway (SEG) (10th)
Trellix Email Security
Ranking in Email Security
13th
Average Rating
8.8
Reviews Sentiment
6.2
Number of Reviews
14
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of July 2026, in the Email Security category, the mindshare of Cloudflare One is 1.7%, up from 1.5% compared to the previous year. The mindshare of Kaspersky Security for Mail Server is 0.8%, up from 0.8% compared to the previous year. The mindshare of Trellix Email Security is 0.4%, up from 0.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security Mindshare Distribution
ProductMindshare (%)
Trellix Email Security0.4%
Cloudflare One1.7%
Kaspersky Security for Mail Server0.8%
Other97.1%
Email Security
 

Featured Reviews

CV
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.
KamranBhatti - PeerSpot reviewer
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.
Anastasia Wairimu - PeerSpot reviewer
Team Manager at Ford
Gateway filtering has protected our organization and provides complete email threat prevention
In my opinion, the best features Trellix Email Security offers include its use for malware analysis as well as the enterprise-wide email quarantine system. My experience with the malware analysis and quarantine features is that they are easy to manage and they have been very effective because we have been able to quarantine any suspicious emails or prevent any attempt before it affects our systems. It is also very user-friendly and has a simple interface. Policies and rules are easy to create and they work with very little downtime or operational impact. Email delivery issues are easy to investigate and troubleshoot. Trellix Email Security has positively impacted my organization as it is user-friendly and does a good job detecting malicious attachments in email, providing complete email protection against all users and working well to stop advanced threats. The price is relatively the same as other competitors.

Quotes from Members

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

Pros

"Cloudflare DDoS is better than its competitors for its security, deployment, and scalability."
"The solution has different options that can be used to differentiate DDoS attacks."
"Clover is the best product globally."
"The blocking feature is very good."
"Cloudflare Zero Trust Platform removes the risk of exposing the applications to the public."
"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."
"The capabilities of the software are strong enough for me to do what it's supposed to do. For me, we don't need to do a lot of configuration on our site. We just enable it and monitor it."
"Using Cloudflare One makes my work quite easy because for DDoS protection, all I need to do is understand the OSI model and click; it makes it easier than trying to write a command line or use a Linux command."
"I find the product valuable because it provides easy integration with other platforms like Fortinet firewalls."
"The integration rate is very high in Kaspersky, which is why most of our customers like it."
"The most valuable feature of the solution stems from the fact that it is a highly reliable and dependable solution."
"The most valuable feature is the straightforward setup."
"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."
"The primary use case of this solution is to filter emails and only allow the legitimate ones through."
"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."
"Trellix Email Security has positively impacted my organization by providing us with a consolidated tool to manage all our email protection, and it is performing excellently."
"Overall, I find Trellix Email Security to be a mature and ready solution, delivering very good protection, and scalability-wise, it is very promising."
"Trellix Email Security is quite valuable and definitely provides a massive return on investments."
"Even in my brief experience, I can clearly see how automation, AI-based analysis, and real-time monitoring improve response time and strengthen overall email security."
"Trellix Email Security has positively impacted our organization."
"Trellix Email Security is reliable and super stable."
"The impact of Trellix Email Security is very good, with reporting showing that above 90% of threats have been blocked monthly, indicating that Trellix Email Security has helped protect us from cyberattacks."
"Compared to other email solutions such as Cisco, price-wise, we get this solution within 50 to 60% of the average."
 

Cons

"Our customers no longer use Cloudflare because its service is subpar."
"Cloudflare DDoS has poor technical support."
"From a logging perspective, it is still a bit difficult to see exactly what users are being blocked with the current views."
"Automation could be improved where you can easily add a TLS and SSL certificate to an application or web app if the developer did not include it."
"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."
"For the topic of improvement, providing some training material is one of my suggestions."
"The response time for support must be reduced."
"The free plan has limitations. For example, I can only set up three rules, and the application firewall is unavailable."
"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 solution is not 100 percent stable and that can use improvement."
"Encrypted email attachments are not being monitored by this solution, which is an area that they need to work on."
"Sometimes Sophos has the patch to block a novel threat, but Kaspersky doesn't."
"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."
"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."
"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."
"My main problem with support is that the response time is too long, which is the major issue."
"However, it was somewhat difficult to block URL-based threats and the security settings were complex, making it difficult for us to use features beyond basic security."
"For potential areas of improvement, Trellix can enable proper single sign-on as opposed to a local username and password."
"The customer support has been inconsistent with Trellix lately because there is a whole loopback hierarchy that you have to reach the customer service first, and then the engineer will respond, and then the customer service will feed you back again."
"I think Trellix Email Security needs to improve different sides of email security, especially the filtering process."
"Threat intelligence is adequate because they are using Microsoft GTI threat intelligence, but we need to increase protection against phishing and spam mails."
"Trellix Email Security can be improved in several areas."
"When we talk about security, Trellix Email Security console is very complex."
 

Pricing and Cost Advice

"The solution is not that expensive."
"The price tag is no longer $200,000, but rather $300,000 to $400,000. It's twice."
"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."
"Cloudflare Zero Trust Platform's pricing is good."
"The pricing is somewhere in the middle. I would rate the pricing a seven out of ten."
"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 solution's pricing lacks transparency."
"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."
Information not available
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Top Industries

By visitors reading reviews
Construction Company
19%
Comms Service Provider
10%
Financial Services Firm
9%
Manufacturing Company
8%
Retailer
13%
Construction Company
11%
Manufacturing Company
7%
Computer Software Company
7%
Computer Software Company
14%
Financial Services Firm
14%
Construction Company
14%
Manufacturing Company
12%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise1
Large Enterprise12
By reviewers
Company SizeCount
Small Business6
Large Enterprise3
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise4
Large Enterprise7
 

Questions from the Community

What needs improvement with Cloudflare Zero Trust Platform?
In my opinion, Cloudflare One can be improved mainly through compatibility, as the integration should be much simpler...
What is your primary use case for Cloudflare Zero Trust Platform?
Cloudflare One's primary use case for my organization is to protect servers and to provide remote access with the VPN...
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 is your experience regarding pricing and costs for Trellix Email Security?
The pricing is equivalent to other OEMs, but the setup cost is quite the same, and the licensing is per user.
What needs improvement with Trellix Email Security?
I could suggest improvements for Trellix Email Security. I would say that having even more customizable dashboards an...
What is your primary use case for Trellix Email Security?
My main use case for Trellix Email Security is related to email security monitoring and threat analysis, as I use the...
 

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
No data available
 

Overview

 

Sample Customers

23andMe
Vimpel Com, Estrella Galicia, Krombacher
Information Not Available
Find out what your peers are saying about Kaspersky Security for Mail Server vs. Trellix Email Security and other solutions. Updated: June 2026.
902,988 professionals have used our research since 2012.