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Cisco Secure Email vs Cisco Secure Email Threat Defense comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Dec 3, 2024

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) (20th), Cloud Access Security Brokers (CASB) (12th), Distributed Denial-of-Service (DDoS) Protection (7th), 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) (10th), Remote Browser Isolation (RBI) (3rd)
Cisco Secure Email
Ranking in Email Security
5th
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
63
Ranking in other categories
Cisco Security Portfolio (6th)
Cisco Secure Email Threat D...
Ranking in Email Security
18th
Average Rating
8.0
Reviews Sentiment
6.7
Number of Reviews
16
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of May 2026, in the Email Security category, the mindshare of Cloudflare One is 1.7%, up from 1.6% compared to the previous year. The mindshare of Cisco Secure Email is 4.7%, down from 6.6% compared to the previous year. The mindshare of Cisco Secure Email Threat Defense is 1.1%, up from 1.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security Mindshare Distribution
ProductMindshare (%)
Cisco Secure Email4.7%
Cisco Secure Email Threat Defense1.1%
Cloudflare One1.7%
Other92.5%
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.
KS
Technical Associate Network Security at Valuepoint Systems
Email security has protected financial data and provides clear tracking for every branch message
The areas of Cisco Secure Email that could be improved or enhanced are the slowness in the console. I don't think it was a database error or something, but we feel some slowness in configuring DLP and other content filters compared to other consoles. It may have been due to on-premises, but it was much noisy at some times while configuring DLP. When we tried to configure a DLP policy, the console became much slower. In that case, we cannot see what had happened in the mail which was blocked at that time. It may take nearly an hour to get back to normal while configuring policies. That is the major issue in the product.
reviewer2541525 - PeerSpot reviewer
Principal Cyber Prevent and Defense Engineer at a comms service provider with 1,001-5,000 employees
Clawback feature performs well but analytics and integration capabilities need improvement
The integration capability with other threat intelligence platforms is not optimal, as I have experienced difficulty in sending logs to our SIEM. Cisco Secure Email Threat Defense's flexibility could be enhanced while it mostly integrates with cloud solutions, but not on-premise. The behavioral analysis capability of Cisco Secure Email Threat Defense is not particularly helpful for identifying new, evolving threats within my company, as it keeps flagging legitimate emails as malicious. Regarding room for improvement, the significant number of false positives should be addressed. The solution does not adapt to behavioral analytics and does not make changes when it sees a pattern.

Quotes from Members

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

Pros

"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."
"Enables me to work from two locations."
"The tool also offers good scalability, and the dashboard, along with real-time analytics, is very good."
"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."
"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."
"Cloudflare One has assisted in securing my remote workforce through a SASE solution with Cloudflare One and the Workers part, although I am not currently using the Workers component."
"Cloudflare, in my opinion, was easy to implement."
"Cloudflare is by far the most effective solution that I have come across."
"At one point, there was a zero-day attack. The Cisco appliance detected it and stopped it, helping us out. We avoided the attack and potential damage."
"We like the in-built features, like the email filtering based on the IP and domain. Cisco has its own blacklisted domains and IPs, which is very good. This filters around 70 percent of emails from spam, and we are seeing fewer false positives with this."
"The tech engineers are very knowledgeable."
"It sends us reports, where we can see if there have been attacks, e.g. DDoS. If so, we can switch to a clean IP."
"The return here is more security and fewer interruptions; it's more stability and productivity versus less productivity, and you could say that you're minimizing your costs by $65,000."
"The added value of it is that every migration to a new version is initiated by the Cisco version itself, so that is a bunch of work that you don't have to do on the Cisco ESA system on-premise. As it becomes a safe platform, you don't need to invest anything in your own data center or in your upgrade path."
"We chose Cisco Iron Port as it delivers strong email security protection and our company needed it to protect the company's email systems from spam, email viruses, .exe files, unwanted email from unwanted sender etc."
"The most valuable features are Advanced Malware Protection, URL filtering, and of course Reputation Filtering."
"Regarding stability, Cisco Secure Email Threat Defense is very stable."
"This solution is easy to use."
"Cisco's technical support is very good."
"Cisco Secure Email Cloud Mailbox can handle a complete portfolio, which is required to protect any kind of attack coming from emails. However, it does not have advanced phishing, but it is available through Cisco. If you compare Cisco Secure Email Cloud Mailbox with the competition, in the competition you have to have one or two solutions together to address the customer's requirement, whereas Cisco Secure Email Cloud Mailbox is addressing everything, such as web domain and email protection. If there is any kind of challenge it will come across through email."
"Overall, it's certainly a very good idea to integrate another layer on top of Microsoft Advanced Threat Protection."
"It's very easy to deploy and configure."
"I would say it's very comprehensive, with multiple antivirus OEMs, virus encrypt features, encryption, and more."
"On ease of use, it rates very high. It's something that I was able to get into without really looking at any documentation. I wanted to see what it felt like before I started looking at any documentation on how to use it, and it was very easy to use. It works very smoothly. The user experience is very intuitive. They did an amazing job on that."
 

Cons

"Our subscription plan for the solution has a limitation of bot signatures."
"Our customers no longer use Cloudflare because its service is subpar."
"The free plan has limitations. For example, I can only set up three rules, and the application firewall is unavailable."
"The tool should provide on-premise versions. Currently, all versions are cloud-based."
"Lacks a VPN feature to provide a secure connection to the data center."
"I would like them to include a VPN feature to provide a secure connection to the data center."
"The software has automated alerts, but the automated alerts are not available in the mobile app."
"The response time for support must be reduced."
"The scalability must be improved."
"The discontinuation of physical hardware solutions is a significant area for improvement in Cisco Email Security Appliance. This decision has posed challenges as virtual appliances are now the only option, which may not be suitable for all industries. The uncertainty regarding the future of the hardware aspect of the solution is a notable concern."
"That's why I wouldn't give it anywhere near a perfect score, because the artificial intelligence just isn't there yet."
"We have occasionally had hardware problems because we are using an appliance-based solution, but that might change. We may consider going to virtual systems."
"The user interface of the Email Security Gateway should be improved."
"I am not satisfied with the solution's reporting and logging."
"The solution needs to improve its advanced phishing filters. It is very good at filtering things which have bad reputations. However, when phishing or malicious emails are new or coming from a legitimate source, we don't feel that the solution is working."
"We didn't get any malware, but a few phishing emails, maybe one or two, slipped in."
"The search area has room for improvement."
"The physical appliance has been discontinued, although the platform still exists."
"The learning curve shows that in the beginning, there are numerous false positives. For one month, we had to reclassify the false positives manually until the system learned."
"The solution is a bit expensive. It could be cheaper."
"The product's complexity at times results in redundant rule sets that are difficult to untangle, highlighting the need for streamlined management systems and a more user-centric approach to system configuration."
"Customers will benefit greatly from monthly billing because the majority of customers today use the cloud, be it Office 365, or Google Cloud."
"I wouldn't recommend Cisco to others because I think Fortinet is better."
"The behavioral analysis capability of Cisco Secure Email Threat Defense is not particularly helpful for identifying new, evolving threats within my company, as it keeps flagging legitimate emails as malicious."
 

Pricing and Cost Advice

"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 is not that expensive."
"Cloudflare Zero Trust Platform's pricing is good."
"The prices are slightly expensive."
"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 price tag is no longer $200,000, but rather $300,000 to $400,000. It's twice."
"The license was not per user, the license model was per feature. You could choose anti-virus, anti-spam, etc. It was feature-based and charged yearly."
"Pricing depends on your environment and which model you want to buy."
"You're going to get what you pay for. If you're not willing to pay the price of Cisco, you're not going to get a product that's as good as Cisco. I don't think Cisco is overpriced, because for the last two years I've been comparing it to Microsoft and Cisco has been cheaper and given us more features."
"The pricing for the Cisco Email Security Appliance involves recurring costs for licenses based on the contracted time frame, such as one year, three years, or five years. Renewals are required after the license expires."
"I would rate the pricing a ten out of ten, where one is cheap, and ten is expensive."
"It is not that costly. We pay for the solution through a contractor and pay an annual fee."
"The price is significantly high."
"The solution is expensive."
"Cisco Secure Email Cloud Mailbox does not have any competition with Sophos, Trend Micro, or other vendors of the world. However, there is a pricing premium for the solution. One has to look at it from that angle that while they are buying Cisco, there will be a premium, and Cisco justifies that premium value. That's why they're charging a high price."
"It is expensive compared to other vendors."
"The feedback from vendors and customer is that it is expensive."
"The solution’s pricing is manageable."
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Top Industries

By visitors reading reviews
Construction Company
21%
Comms Service Provider
10%
Financial Services Firm
9%
Manufacturing Company
6%
Financial Services Firm
11%
Computer Software Company
9%
Manufacturing Company
9%
Government
6%
Marketing Services Firm
12%
Manufacturing Company
8%
Healthcare Company
7%
Computer Software Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise2
Large Enterprise11
By reviewers
Company SizeCount
Small Business22
Midsize Enterprise18
Large Enterprise26
By reviewers
Company SizeCount
Small Business4
Midsize Enterprise6
Large Enterprise7
 

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 do you like most about Cisco Secure Email?
Cisco Secure Email is a budget-friendly solution.
What is your experience regarding pricing and costs for Cisco Secure Email?
The pricing structure is good as it is user-based or email client-based, which is positive for clients.
What needs improvement with Cisco Secure Email?
The areas of Cisco Secure Email that could be improved or enhanced are the slowness in the console. I don't think it ...
What is your experience regarding pricing and costs for Secure Email Threat Defense?
Comparatively with other products, the pricing of Cisco Secure Email Threat Defense is normal. As a technical guide, ...
What needs improvement with Secure Email Threat Defense?
We have deployed Cisco Secure Email Threat Defense in two customer environments. It is still in development as a new ...
What is your primary use case for Secure Email Threat Defense?
We are working with Cloud Mail Gateway and on-premise mail gateways. We have worked with Cisco Secure Email Threat De...
 

Also Known As

Cloudflare Area 1 Email Security, Cloudflare Bot Management, Cloudflare Gateway, Cloudflare Zero Trust Platform, Cloudflare DDoS, Cloudflare SASE & SSE Platform
Cisco Email Security, IronPort, Cisco Email Security, ESA, Email Security Appliances
Cisco Secure Email Cloud Mailbox, Cisco CMD, Cisco Cloud Mailbox Defense
 

Overview

 

Sample Customers

23andMe
SUNY Old Westbury, CoxHealth, City of Fullerton, Indra
Luiss University, Lone Star College, T-Systems, Magyar Telekom
Find out what your peers are saying about Cisco Secure Email vs. Cisco Secure Email Threat Defense and other solutions. Updated: April 2026.
892,868 professionals have used our research since 2012.