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Cisco Secure Email 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
Ranking in Email Security
5th
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
62
Ranking in other categories
Cisco Security Portfolio (6th)
Trend Micro Deep Discovery ...
Ranking in Email Security
23rd
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 October 2025, in the Email Security category, the mindshare of Cisco Secure Email is 5.6%, down from 7.8% 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 Market Share Distribution
ProductMarket Share (%)
Cisco Secure Email5.6%
Trend Micro Deep Discovery Email Inspector0.5%
Other93.9%
Email Security
 

Featured Reviews

Kostas Karidas - PeerSpot reviewer
Helps prevent security breaches but fails to improve in the area of AI
I have not noticed any impressive advanced threat protection mechanisms in the tool. I don't know if there are any AI features in the product. I don't know if there is any other technology embedded in the solution. Cisco Secure Email successfully mitigated potential email threats. My company has seen plenty of scenarios where Cisco Secure Email successfully mitigated potential email threats, spam emails, and fraudulent domains. The product is good for dealing with spam emails, and it can take care of more than 100 spam emails per day. A huge number of spam emails are monitored with the help of Cisco Secure Email. I would not recommend the product to other businesses because you need to have some kind of expertise in configuring and knowing a bit about the tool's GUI. The tool also lacks in the area of AI mechanics. If I would like to have an overview and review another solution, I would go for another product other than Cisco Secure Email. I can definitely suggest others to look at the product and review it, but I would also recommend that they compare it with the other solutions in the market. I wouldn't prioritize Cisco Secure Email over other tools. Either the support partner of the product or I take care of the tool's maintenance phase by looking into the configurations and doing some fine-tuning. I rate the tool a seven to eight out of ten.
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

"It has the ability to tell us, after an email has been delivered, where else it went, once it got inside. Maybe it's something we wanted it to stop and it didn't stop it, but it notified us later that it was something that it should have stopped. It can give us a trajectory of all the other places that it went internally and it can tell us what files were transferred as well."
"Anti-Spam and Advanced Malware Protection are the most valuable features... and we also have the option to block Zero-day attacks."
"The most valuable features are Advanced Malware Protection, URL filtering, and of course Reputation Filtering."
"Spam controls are excellent because they are a powerful feature that operates almost effortlessly."
"Cisco Secure Email Cloud Gateway has allowed our users to be able to concentrate on the emails that they do receive. Previously, our users had to deal with nine million additional emails across the organization, which is nearly 1,000 emails per user to have to deal with a month. That's a massive amount for our staff to deal with and probably several hours of their time. We have a lot of clinical staff, being a hospital. We want to make our staff as productive as possible. By removing a lot of that spam and phishing type emails, this allows them to do their job."
"It provides good IT assistance."
"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."
"Because we scan products, and there is a lot of critical data, security is very important in these cases."
"The most valuable feature of Trend Micro Deep Discovery Email Inspector is the simple analysis of phishing emails."
"The best features of Trend Micro Deep Discovery Email Inspector include its reliability."
"It can effectively monitor outbound and inbound devices."
"The solution's most valuable features include visibility into the network and fast sandboxing technology for alerts, though response time can vary."
"I highly recommend Trend Micro Deep Discovery Email Inspector due to its security and scalability features."
"I find Trend Micro to be a good solution for security purposes."
"I would rate the solution's stability at ten out of ten."
"Trend Micro is a very good product."
 

Cons

"The initial setup was complex because I have two sites with physical clusters."
"The solution does not have a strong outbound service. It should also integrate DLP."
"One of the things that Cisco could improve on with IronPort is the support. Cisco doesn't really have enough engineers who have full, hands-on knowledge of IronPort. Knowledge of it is not something you can find easily compared to other security appliances."
"We would like to see more options for the customization of content filters."
"I would like to see sandboxing for email, where suspicious emails received by the system are analyzed through online services."
"I would like them to add some clustering or high availability features."
"The user interface is a bit complex."
"The interface is dated. It has looked pretty much the same for 15 years or so. It would be helpful to be able to do everything from one spot. The centralized quarantine and reporting are completely separate from policy administration."
"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)."
"Trend Micro Deep Discovery Email Inspector could improve by making it easier to use. Microsoft solutions are easier to use."
"The dashboard could be improved to match the quality of Check Point Harmony's dashboard."
"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."
"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."
"Trend Micro's technical support has room for improvement."
"The product's feature for message processing and blocking devices for bulk emails needs improvement."
 

Pricing and Cost Advice

"There are additional fees for adding features."
"The licensing is a mess and needs sorting out. I am not really concerned about the pricing because I only make recommendations, not buying decisions."
"At times, we feel the pricing is a bit too high, but then, there is also room for discounts. We enjoy a lot of discounts, and that is why we are still with them. There are no costs in addition to the standard licensing fees."
"There were no other costs in addition to the standard licensing fees."
"I rate the product price as six on a scale of one to ten, where one means it is a very expensive tool."
"It's adapted to the market. It's similar to other vendors. We at least don't have many problems regarding that because Cisco is adaptable on that side. When we present the solutions to the customers, we tend to achieve the goals that the customer has in terms of the budget for such implementations."
"Compared to Cisco's on-prem service, the cost is the same, but you don't have to pay for the hardware and you don't have to maintain the system, as far as upgrades and hardware failures are concerned. It is cheaper to operate on their cloud service than it is to operate with their on-prem service."
"Cisco Secure Email and the support are priced well. It's not cheap, but there are other solutions that offer less and cost so much. For example, Microsoft is more expensive than Cisco."
"The solution's pricing is high, and I would rate it an eight out of ten."
"The price of Trend Micro Deep Discovery Email Inspector is less expensive than Microsoft solutions."
"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
19%
Financial Services Firm
9%
Manufacturing Company
8%
Government
6%
Performing Arts
13%
Computer Software Company
11%
Financial Services Firm
9%
Outsourcing Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business22
Midsize Enterprise18
Large Enterprise25
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise2
Large Enterprise1
 

Questions from the Community

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 user interface of the Email Security Gateway ( /products/security-gateway-reviews ) should be improved. It would be beneficial to have the functionality of the Email Threat Defense integrated i...
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 Cisco Secure Email vs. Trend Micro Deep Discovery Email Inspector and other solutions. Updated: September 2025.
869,202 professionals have used our research since 2012.