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Fortinet FortiMail 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

Fortinet FortiMail
Ranking in Email Security
6th
Average Rating
8.6
Reviews Sentiment
6.9
Number of Reviews
65
Ranking in other categories
No ranking in other categories
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 Fortinet FortiMail is 4.0%, down from 5.8% 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 (%)
Fortinet FortiMail4.0%
Trend Micro Deep Discovery Email Inspector0.5%
Other95.5%
Email Security
 

Featured Reviews

MOHAN SUKUMAR - PeerSpot reviewer
Secure email management improves through advanced filtering and dynamic virus scanning
Fortinet FortiMail offers capabilities like settings for mail delivery, mail filtering, spam controls, and email bursting prevention. It also allows for email forwarding, dynamic filtering, and scanning based on virus signatures. I can set varying levels of security. The tool is flexible and provides essential features for mail security and management.
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

"This excellent email gateway minimizes spam, inspects suspicious emails and isolates infected attachments with little administrative effort."
"The most valuable feature of Fortinet FortiMail is its fully detailed dashboard."
"The user quarantine feature in the solution is good...It is a stable solution."
"The spam filtering is great."
"It can block a lot of fake emails."
"Troubleshooting is very simple because you can see where the email was not delivered and why it would be considered as spam."
"When combining this solution with other Fortinet products, such as FortiGate, it integrates well and provides a comprehensive protection package."
"The anti-spam features are valuable."
"I like that it is very user-friendly and easy to install."
"The most valuable feature of Trend Micro Deep Discovery Email Inspector is the simple analysis of phishing emails."
"Trend Micro is a very good product."
"I find Trend Micro to be a good solution for security purposes."
"The best features of Trend Micro Deep Discovery Email Inspector include its reliability."
"The solution's most valuable features include visibility into the network and fast sandboxing technology for alerts, though response time can vary."
"I would rate the solution's stability at ten out of ten."
"I highly recommend Trend Micro Deep Discovery Email Inspector due to its security and scalability features."
 

Cons

"Online support sometimes takes up to a week to get back to you."
"Maybe FortiMail's integration could be better."
"The solution's pricing could be improved."
"The solution's pricing is flexible and can be adjusted for African utility companies. Microsoft often offers special pricing formulas for African governments and organizations and it is similar to Fortinet FortiMail. In my country, government institutions receive discounted pricing from Fortinet FortiMail."
"A room for improvement in Fortinet FortiMail is that it only has a hardware version. I also didn't find the solution scalable, so that's another area for improvement."
"It would be nice if we could manage the solution from the cloud so I could handle things off-site if necessary."
"Sometimes, authentic emails get blocked by the solution's firewall."
"The sandboxing features are not well done in Fortinet FortiMail, making it an area of improvement."
"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)."
"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."
"The product's feature for message processing and blocking devices for bulk emails needs improvement."
"Trend Micro's technical support has room for improvement. More efficient support should be provided, especially for standard support."
"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."
"The dashboard could be improved to match the quality of Check Point Harmony's dashboard."
 

Pricing and Cost Advice

"The product's licensing part depends on the number of mailboxes and the hard disk needed by customers. The cost of the license depends on the number of mailboxes and the number of emails."
"Price-wise, you get what you pay for in Fortinet FortiMail. Apart from the licensing costs, no additional expenses are attached to the solution's pricing."
"The annual cost is $55,000."
"It's not as that expensive with the competitive different brands. The products sell a lot."
"The pricing is on the higher side."
"The licensing model for this solution is better because it is based on the box and not the number of users."
"It is a fairly priced product, considering what it does. The product offers good value for the money users spend on it."
"There is either an annual or six-month charge to use this solution. Fortinet FortiMail is cheaper than Proofpoint or Cisco Security, or other email security appliances."
"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."
"We pay for an annual subscription for this email security solution."
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Top Industries

By visitors reading reviews
Computer Software Company
13%
Financial Services Firm
10%
Manufacturing Company
7%
Government
7%
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 Business31
Midsize Enterprise22
Large Enterprise14
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise2
Large Enterprise1
 

Questions from the Community

What is your experience regarding pricing and costs for Fortinet FortiMail?
Fortinet FortiMail is considered overpriced by Indian rupee standards. My organization is not profit-making, and academic pricing is required, but it may not be available for security products like...
What needs improvement with Fortinet FortiMail?
It can be somewhat difficult to prepare precise or very deep rules to improve security, though the product is very good.
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

FortiMail
Deep Discovery Email Inspector
 

Overview

 

Sample Customers

Magromer Cueros y Pieles S.A.
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 Fortinet FortiMail vs. Trend Micro Deep Discovery Email Inspector and other solutions. Updated: September 2025.
869,202 professionals have used our research since 2012.