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Fortinet FortiMail vs Trend Micro Email Security comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Apr 20, 2025

Review summaries and opinions

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

ROI

Sentiment score
7.4
Users found Microsoft Defender for Office 365 cost-effective, citing improved protection, time efficiency, and savings in security management.
Sentiment score
7.6
Fortinet FortiMail boosts email security, saves costs, reduces spam, and consolidates functions, increasing reliability and efficiency for users.
Sentiment score
7.6
Entities reported substantial ROI from Trend Micro Email Security, highlighting cost savings, enhanced protection, and improved security posture.
It has also decreased our time to detection and response by about 15 to 20 percent.
It offers cost savings compared to Cisco, which was very expensive.
 

Customer Service

Sentiment score
6.9
Microsoft Defender for Office 365 offers knowledgeable support, though escalation delays and outdated documentation can affect resolution speed.
Sentiment score
6.5
Fortinet FortiMail is praised for competent support, though some experience delays; elite support offers quicker assistance for a fee.
Sentiment score
7.6
Trend Micro Email Security support is praised for responsiveness and expertise, though response times vary by region.
Any issues are addressed quickly by Microsoft's support.
Customer service and support have been fantastic.
I have direct communication with Kenyan system engineers and local support in Ethiopia, enabling good support.
Fortinet's technical support offers high-quality support.
Clients are generally very satisfied with the various types of support available.
 

Scalability Issues

Sentiment score
8.1
Microsoft Defender for Office 365 is scalable, adaptable, and integrates seamlessly, supporting medium to large enterprises efficiently.
Sentiment score
7.4
Fortinet FortiMail is scalable, integrates well with infrastructures, effectively handles email volumes, and is favored by various industries.
Sentiment score
7.8
Trend Micro Email Security is a scalable cloud-based solution ideal for medium to enterprise-sized businesses with strong user flexibility.
We have never faced scalability problems, and Microsoft manages it effectively.
 

Stability Issues

Sentiment score
7.8
Microsoft Defender for Office 365 is highly rated for stability, featuring strong performance and rare minor network issues.
Sentiment score
8.4
Fortinet FortiMail is praised for its high stability, minimal downtime, and user satisfaction in both on-premises and cloud deployments.
Sentiment score
8.0
Trend Micro Email Security is highly reliable, stable, easy to manage, and performs well with minimal reported issues.
The solution is stable, as we have been using it for the past two years.
This stability is consistent across Fortinet products, including FortiGate firewall.
 

Room For Improvement

Microsoft Defender for Office 365 requires improvements in antivirus, scalability, integration, interface, threat intelligence, and licensing transparency.
Fortinet FortiMail needs upgrades in interface, integration, user management, security features, and overall user-friendliness for improved functionality.
Trend Micro Email Security needs stronger phishing detection, better integration, improved interface, and cost efficiency for enhanced user experience.
Microsoft could improve by offering recommendations for domain spoofing attacks, especially scenarios where DNS records like SPF, DKIM, and DMARC are not properly published.
The main area for improvement is simplifying the implementation and rollout process.
I would reduce the cost.
The transition from on-premises devices to virtual appliances may be necessary as more organizations migrate email services to the cloud.
Providing comprehensive documentation on how to deploy and configure would improve the solution.
The area that could use some improvement in Fortinet FortiMail is the integration process.
The company also needs to work on pricing because it is quite costly compared to other products.
 

Setup Cost

Microsoft Defender for Office 365 pricing varies; often costly for SMBs but competitive for enterprises, with added licensing complexities.
Fortinet FortiMail offers flexible, cost-effective pricing from $28,000 to $100,000, influenced by features, company needs, and regional factors.
Trend Micro Email Security is costly but offers great enterprise value, with pricing around $6,000 annually for 300 users.
Money-wise, it is a part of the Office 365 suite, making it slightly more expensive compared to Trend Micro.
Microsoft is quite affordable with a lot of features available for any size organization.
Fortinet FortiMail is considered overpriced by Indian rupee standards.
For environments with 4,000 to 5,000 users, it can be between 6 to 8 dollars.
 

Valuable Features

Microsoft Defender for Office 365 provides comprehensive email protection with seamless Microsoft integration, enhancing threat management and data security.
Fortinet FortiMail offers advanced spam detection, easy management, comprehensive security, scalability, performance, and cost-effective email filtering with real-time updates.
Trend Micro Email Security provides comprehensive protection with advanced features, easy management, and seamless integration for reliable email security.
It ranks the threats and allows us to prioritize those hitting us the hardest, such as email threats.
It provides end-to-end visibility on email threats such as phishing, extending beyond Exchange Online Protection.
Microsoft Defender for Office 365 is now part of a centralized tenant for my entire group.
Its threat detection capabilities have been beneficial.
The most valuable features are Fortinet FortiMail's ability to protect from advanced features of email-based attacks, including protection against ransomware and malware attacks.
Fortinet FortiMail offers capabilities like settings for mail delivery, mail filtering, spam controls, and email bursting prevention.
The product is quite strong, and that is one reason most clients are replacing their existing email security solutions with it.
 

Categories and Ranking

Microsoft Defender for Offi...
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Ranking in Email Security
1st
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
49
Ranking in other categories
Advanced Threat Protection (ATP) (1st), Microsoft Security Suite (11th)
Fortinet FortiMail
Ranking in Email Security
6th
Average Rating
8.6
Reviews Sentiment
7.0
Number of Reviews
64
Ranking in other categories
No ranking in other categories
Trend Micro Email Security
Ranking in Email Security
8th
Average Rating
8.0
Reviews Sentiment
7.2
Number of Reviews
27
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of April 2025, in the Email Security category, the mindshare of Microsoft Defender for Office 365 is 13.1%, down from 19.0% compared to the previous year. The mindshare of Fortinet FortiMail is 5.1%, down from 5.8% compared to the previous year. The mindshare of Trend Micro Email Security is 2.7%, down from 3.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security
 

Featured Reviews

Tolu Omolaja - PeerSpot reviewer
Great URL scanning and attachment scanning, but I would like more proactive threat analysis
The two main features that prove most beneficial for us are URL scanning and attachment scanning. URL scanning involves an automatic scan of links and emails. When a user clicks on a link within an email, the system promptly checks the link's safety. If the link is deemed safe, access is granted automatically. However, if it is flagged as unsafe, we receive feedback and notification to caution us about the potentially harmful link. At this point, we are presented with the option to proceed or return. I have personally witnessed the system identify a few unsafe links, making this the primary advantage of using the solution. The second crucial aspect is the scanning of attachments. When an email containing an attachment arrives, we receive a notification of the new email, along with information that the attachment is being scanned for threats. This additional layer of security provides peace of mind for our organization. While Microsoft Defender for Office 365 offers numerous features, these two stand out as particularly impressive and valuable to us.
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.
Nadeem Syed - PeerSpot reviewer
Offers comprehensive security, easy integration, and good support
It integrated easily. About 99% of the time, we do not face any challenges in integrating any product of Trend Micro with the existing network. It is usually compatible with all kinds of networks. They have recently added AI to all Trend Micro products. It makes life a little bit easier by catching viruses, providing solutions, and helping out whenever you are stuck somewhere. It is one of the very good features they have right now. For example, one of our clients experienced a network attack and became confused about resolving the issues. The AI was helpful by suggesting initial steps to solve the problem.
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Top Industries

By visitors reading reviews
Computer Software Company
16%
Financial Services Firm
9%
Manufacturing Company
8%
Government
6%
Educational Organization
45%
Computer Software Company
9%
Financial Services Firm
5%
Government
4%
Computer Software Company
17%
Financial Services Firm
11%
Comms Service Provider
7%
Manufacturing Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What do you like most about Microsoft Defender for Office 365?
Threat Explorer is an invaluable tool for me, and it plays a crucial role in helping me discern the origins of variou...
What is your experience regarding pricing and costs for Microsoft Defender for Office 365?
Money-wise, it is a part of the Office 365 ( /products/office-365-reviews ) suite, making it slightly more expensive ...
What needs improvement with Microsoft Defender for Office 365?
The main area for improvement is simplifying the implementation and rollout process. There are many conditions to be ...
What needs improvement with Fortinet FortiMail?
Detailed documentation regarding deployment options and configuration would be beneficial. Providing comprehensive do...
What do you like most about Trend Micro Email Security?
The tool provides a strong defense against attacks. It is also easy to use. Trend Micro Email Security's integration ...
What needs improvement with Trend Micro Email Security?
There is room for improvement in mobile device management. The company also needs to work on pricing because it is qu...
What advice do you have for others considering Trend Micro Email Security?
I would definitely recommend it. Trend Micro is better than any of its competitors. I would rate it a nine out of ten...
 

Also Known As

MS Defender for Office 365
FortiMail
No data available
 

Overview

 

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Magromer Cueros y Pieles S.A.
MedImpact Healthcare Systems, Air21, Azra Solutions, CBOSS, De Montfort University, Depaeuw, DHR Health, Fukui University Hospital
Find out what your peers are saying about Fortinet FortiMail vs. Trend Micro Email Security and other solutions. Updated: April 2025.
848,716 professionals have used our research since 2012.