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Cisco Secure Email Threat Defense vs Trend Micro Deep Discovery Email Inspector comparison

 

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

Cisco Secure Email Threat D...
Ranking in Email Security
26th
Average Rating
8.0
Reviews Sentiment
6.9
Number of Reviews
15
Ranking in other categories
No ranking in other categories
Trend Micro Deep Discovery ...
Ranking in Email Security
20th
Average Rating
7.8
Reviews Sentiment
7.1
Number of Reviews
8
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of August 2025, in the Email Security category, the mindshare of Cisco Secure Email Threat Defense is 1.1%, up from 1.0% compared to the previous year. The mindshare of Trend Micro Deep Discovery Email Inspector is 0.5%, up from 0.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security
 

Featured Reviews

Enrique-Diaz Jolly - PeerSpot reviewer
Provides comprehensive threat protection with suggestions for modernizing controls
I use the email gateway as the core of the email exchange between the Internet and our domain. The email gateway serves as the email exchanger The product offers protection, email security, anti-spam, and antivirus. It includes threat intelligence with advanced malware protection and many…
Bilal Saleem - PeerSpot reviewer
Reliability and threat intelligence make this solution competitive, but AI improvements can further enhance its effectiveness
The best features of Trend Micro Deep Discovery Email Inspector include its reliability. The second valuable feature is its built-in sandbox feature, allowing for inspection of incoming emails and attachments. The sandbox is an appliance that opens any attachment in an enclosed environment to assess its impact and potential for viruses. This protects the network from harmful threats. Trend Micro has a very large R&D team with excellent threat intel, allowing them to provide better solutions than some competitors. They understand emerging threats based on the information from their EDR. The key strengths can be summarized as reliability, a good integrated one-box solution that includes a sandbox, and their R&D capabilities and good ratings, which lead to better threat intelligence. The detailed threat intelligence provided by Trend Micro Deep Discovery Email Inspector is valuable in understanding the behavior and tactics of potential email threats.

Quotes from Members

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

Pros

"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."
"Secure Email Threat Defense's scalability is good."
"I would say it's very comprehensive, with multiple antivirus OEMs, virus encrypt features, encryption, and more."
"Regarding stability, Cisco Secure Email Threat Defense is very stable."
"I highly recommend it as one of the best choices."
"This solution is easy to use."
"The product offers protection, email security, anti-spam, and antivirus."
"Cisco has a threat mechanism called cloud-based Talos, where all the threats are inbuilt."
"The most valuable feature of Trend Micro Deep Discovery Email Inspector is the simple analysis of phishing emails."
"I highly recommend Trend Micro Deep Discovery Email Inspector due to its security and scalability features."
"It can effectively monitor outbound and inbound devices."
"I find Trend Micro to be a good solution for security purposes."
"I would rate the solution's stability at ten out of ten."
"The solution's most valuable features include visibility into the network and fast sandboxing technology for alerts, though response time can vary."
"The best features of Trend Micro Deep Discovery Email Inspector include its reliability."
"Trend Micro is a very good product."
 

Cons

"We encounter issues while searching for missing emails."
"The pricing could always be better."
"The solution is a bit expensive."
"The physical appliance has been discontinued, although the platform still exists."
"Customers will benefit greatly from monthly billing because the majority of customers today use the cloud, be it Office 365, or Google Cloud."
"This solution could be improved by integration with Sandbox."
"From a technical point of view, Cisco is far behind in terms of cybersecurity, and it has to improve very much."
"The tool gives false positives and it needs to be more accurate. I would like to see AI as a new feature."
"It could be more user-friendly, easier to install, and lighter on the network. I would say that for all products because you do not need technical expertise to take care of it. When you have a user-friendly solution, it makes it easier for the vendors or companies like us. We do not have to go to the client's site to attend to issues all the time. Because it is user-friendly, they can take care of it after some training."
"I would like to be able to send emails to a specific sandbox. This is a feature I would like to see added to the next release."
"To improve Trend Micro Deep Discovery Email Inspector, it should have updates with better AI and ML-based integration."
"Trend Micro's technical support has room for improvement."
"Trend Micro's technical support has room for improvement. More efficient support should be provided, especially for standard support."
"The product's feature for message processing and blocking devices for bulk emails needs improvement."
"The dashboard could be improved to match the quality of Check Point Harmony's dashboard."
"The tool needs to incorporate faster response times for issue detection, more detailed reports, and better compatibility with older operating systems (e.g., Windows 7, 8, Server 2012)."
 

Pricing and Cost Advice

"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."
"The solution’s pricing is manageable."
"The feedback from vendors and customer is that it is expensive."
"It is expensive compared to other vendors."
"The price of Trend Micro Deep Discovery Email Inspector is less expensive than Microsoft solutions."
"The solution's pricing is high, and I would rate it an eight out of ten."
"It's an expensive solution, and you may not see a return on investment in a short period of time. However, you will see a return over a long period of time."
"We pay for an annual subscription for this email security solution."
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Top Industries

By visitors reading reviews
Computer Software Company
23%
Healthcare Company
8%
Government
6%
Manufacturing Company
6%
Computer Software Company
12%
Performing Arts
12%
Financial Services Firm
10%
Manufacturing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What is your experience regarding pricing and costs for Secure Email Threat Defense?
The pricing for Cisco Secure Email Threat Defense is relatively high. For an organization that already has the legacy system, it makes sense to continue hosting it. However, new organizations might...
What needs improvement with Secure Email Threat Defense?
Modernization is an area that could be improved for Cisco Secure Email Threat Defense, as some features have lagged behind newer competitors, potentially offering more advanced analysis capabilitie...
What is your primary use case for Secure Email Threat Defense?
The main use case for Cisco Secure Email Threat Defense is as a gateway for email traffic into and out of the organization. It serves as the primary conduit for emails, providing content filtering,...
What is your experience regarding pricing and costs for Trend Micro Deep Discovery Email Inspector?
On the pricing side, Trend Micro Deep Discovery Email Inspector is not the cheapest, but it's not the highest either. Its prices are around 80%, which is lesser than some vendors but higher than most.
What needs improvement with Trend Micro Deep Discovery Email Inspector?
To improve Trend Micro Deep Discovery Email Inspector, it should have updates with better AI and ML-based integration. While it has some capabilities in this area, focusing more on this aspect coul...
 

Also Known As

Cisco Secure Email Cloud Mailbox, Cisco CMD, Cisco Cloud Mailbox Defense
Deep Discovery Email Inspector
 

Overview

 

Sample Customers

Luiss University, Lone Star College, T-Systems, Magyar Telekom
Bank Saint Petersburg, CEITEC S.A., Dar Al-Handasah, Mitsubishi Electric Information Systems, Motilal Oswal Financial Services Ltd, OKWAVE, Oman Arab Bank, VakifBank
Find out what your peers are saying about Cisco Secure Email Threat Defense vs. Trend Micro Deep Discovery Email Inspector and other solutions. Updated: July 2025.
865,384 professionals have used our research since 2012.