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Cisco Secure Email vs Trend Micro Deep Discovery Email Inspector [EOL] comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Feb 26, 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

Cisco Secure Email
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
63
Ranking in other categories
Email Security (5th), Cisco Security Portfolio (6th)
Trend Micro Deep Discovery ...
Average Rating
8.0
Reviews Sentiment
7.1
Number of Reviews
8
Ranking in other categories
No ranking in other categories
 

Featured Reviews

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.
Bilal Saleem - PeerSpot reviewer
Manager Pre Sales NI at Nera Philippines Inc.
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

"For what you get for the product, the support, and the overall stability, it is definitely a good return on investment."
"IronPort allows visibility into the problem and an easy way to pinpoint policy offenders."
"Email service is one of the services that we offer at Galaxy, and Cisco ESA has improved our business so much that our customers want to maintain their business with us for email security, with over 500 domains on our email platform and improved profitability in everything."
"The advanced phishing protection and the integration with the awareness tool that Cisco has embedded into the solution to bring awareness to the customers about the dangers of phishing attacks and other things that come from email are the most valuable features."
"It is doing its work. It is doing what it was actually designed to do. It has ensured we don't have business email compromises, and it has also ensured that our brand Galaxy is unique all year round."
"Cisco IronPort mail security was very helpful by blocking threats, viruses, worms and Trojans from attacking the mail accounts and user PCs."
"Capital expenditure is a significant consideration, and the impact on major expenditures prompts a careful analysis before onboarding the new product."
"The system provides our service desk with the means to troubleshoot email delivery issues with ease."
"I highly recommend Trend Micro Deep Discovery Email Inspector due to its security and scalability features."
"I would rate the solution's stability at ten out of ten."
"I like that it is very user-friendly and easy to install."
"I find Trend Micro to be a good solution for security purposes."
"It can effectively monitor outbound and inbound devices."
"The best features of Trend Micro Deep Discovery Email Inspector include its reliability."
"The most valuable feature of Trend Micro Deep Discovery Email Inspector is the simple analysis of phishing emails."
"The solution's most valuable features include visibility into the network and fast sandboxing technology for alerts, though response time can vary."
 

Cons

"I would like them to add some clustering or high availability features."
"If you are not a technical guy, it is hard to maneuver, but as soon as you work on it, it gets better and better. If there was a better way to know how to do things or how to find things, it would be good."
"The hardware is not up to the mark. Two to three times a year we have complete downtime."
"We have Microsoft and we have the E5 licenses, they have more EDR responses on certain emails. That's something that Cisco ESA on the cloud doesn't have. They don't do anything about MITRE attacks. They only detect if there is a malicious email or a threat and they remove it."
"I would like more functionality and how to use it for Level 2 type staff. The biggest issue is it needs to be easier to use and navigate."
"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."
"The pricing needs to be reconsidered or enhanced."
"I have some frustrations with the user experience in the interface, specifically with regard to making a list of people for whom I want to allow email access."
"The dashboard could be improved to match the quality of Check Point Harmony's dashboard."
"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."
"Trend Micro's technical support has room for improvement. More efficient support should be provided, especially for standard support."
"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)."
"The product's feature for message processing and blocking devices for bulk emails needs improvement."
"To improve Trend Micro Deep Discovery Email Inspector, it should have updates with better AI and ML-based integration."
"Trend Micro Deep Discovery Email Inspector could improve by making it easier to use. Microsoft solutions are easier to use."
"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."
 

Pricing and Cost Advice

"It is not that costly. We pay for the solution through a contractor and pay an annual fee."
"Pricing depends on your environment and which model you want to buy."
"In my previous organization, avoiding four instances of CryptoLocker within an estimated six month period is approximately $600,000 in lost time and effort. Our five year cost was about a million dollars, and the four outages that we had equated to 65 percent of that five year cost."
"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."
"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."
"There were no other costs in addition to the standard licensing fees."
"It is expensive. I would rate it 2 out of 10, where 1 is the most expensive and 10 is the cheapest."
"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."
"We pay for an annual subscription for this email security solution."
"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."
"The price of Trend Micro Deep Discovery Email Inspector is less expensive than Microsoft solutions."
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Top Industries

By visitors reading reviews
Financial Services Firm
11%
Manufacturing Company
10%
Outsourcing Company
10%
Comms Service Provider
7%
Outsourcing Company
12%
Performing Arts
12%
Comms Service Provider
8%
Construction Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business22
Midsize Enterprise18
Large Enterprise27
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise2
Large Enterprise1
 

Questions from the Community

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 was a database error or something, but we feel some slowness in configuring DLP ...
What is your primary use case for Cisco Secure Email?
We are using Cisco Secure Email to monitor the outgoing and incoming mail traffic in our financial institute. We have nearly 900 branches all over India. We have an on-premises mail server in which...
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...
What is your primary use case for Trend Micro Deep Discovery Email Inspector?
The main use case for using Trend Micro Deep Discovery Email Inspector is for the anti-spam solution. Different enterprises get spam emails from multiple sources, so the use case for customers is t...
 

Also Known As

Cisco Email Security, IronPort, Cisco Email Security, ESA, Email Security Appliances
Deep Discovery Email Inspector
 

Overview

 

Sample Customers

SUNY Old Westbury, CoxHealth, City of Fullerton, Indra
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 Proofpoint, Microsoft, Check Point Software Technologies and others in Email Security. Updated: October 2026.
920,929 professionals have used our research since 2012.