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Fortinet FortiMail vs Microsoft Exchange Online Protection (EOP) comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Feb 8, 2026

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
6.4
Fortinet FortiMail enhances email security with cost savings, reduced spam, efficient management, robust features, and improved productivity.
Sentiment score
5.9
Microsoft Exchange Online Protection effectively enhances email security, productivity, and cost-efficiency compared to rivals like AppRiver and Trend.
It offers cost savings compared to Cisco, which was very expensive.
System admin at Environment Fund
 

Customer Service

Sentiment score
6.5
Fortinet FortiMail support is praised for responsiveness and expertise but criticized for variability based on region and tier.
Sentiment score
6.4
Microsoft Exchange Online Protection support receives mixed reviews, with response times varying based on issue complexity and service level.
I have direct communication with Kenyan system engineers and local support in Ethiopia, enabling good support.
CTO at Malam Engineering PLC
Mainly, they are focusing on Fortinet FortiMail and FortiAnalyzer, where the support engineers are very good.
Head of the IT Security Division at a tech services company with 11-50 employees
Fortinet's technical support offers high-quality support.
System admin at Environment Fund
If I had to rate the support I received on a scale of ten, I would give it a ten because he went way beyond what was expected for me.
Business Process Manager/ Educational Technologist at a educational organization with 1,001-5,000 employees
Microsoft offers excellent 24/7 support.
System Administrator at Shubham housing finance
My team is able to get the help they need when necessary.
General Manager at Ambient iT
 

Scalability Issues

Sentiment score
7.1
Fortinet FortiMail is scalable for various environments, suitable for mid-sized to enterprise users with virtual and on-premise options.
Sentiment score
7.6
Microsoft Exchange Online Protection efficiently scales from small businesses to large enterprises, offering seamless cloud migration and regular updates.
The scalability of Fortinet FortiMail depends on whether you are buying a virtualized license, which allows for a scalable pay-as-you-go model, or if you are buying a box.
Head of the IT Security Division at a tech services company with 11-50 employees
Fortinet FortiMail is scalable and can be expanded in large environments.
Senior Cybersecurity Engineer at Kyndryl
 

Stability Issues

Sentiment score
8.3
Fortinet FortiMail is highly rated for stability, reliability, effective spam handling, and seamless integration, requiring minimal fine-tuning.
Sentiment score
7.7
Microsoft Exchange Online Protection is reliable and stable, with rare security incidents, benefiting from good maintenance and occasional third-party support.
This stability is consistent across Fortinet products, including FortiGate firewall.
CTO at Malam Engineering PLC
 

Room For Improvement

Fortinet FortiMail requires interface refinement, improved features, better documentation, and enhanced integration with advanced threat detection and Fortinet’s ecosystem.
Microsoft Exchange Online Protection needs improved flexibility, security, user experience, intuitive interface, pricing, support, and integration with other platforms.
The transition from on-premises devices to virtual appliances may be necessary as more organizations migrate email services to the cloud.
Head of computer systems at Indian Institute of Space Science & Technology(IIST)
I do think they should work on their licensing model to offer more flexibility.
CTO at Exceed NetSec LLC
Providing comprehensive documentation on how to deploy and configure would improve the solution.
CTO at Malam Engineering PLC
Improving the search process by allowing searches with different types of parameters and facilitating searches within emails would be advantageous.
General Manager at Ambient iT
The user interface of Microsoft Exchange Online Protection (EOP) has room for improvement.
Director at a tech services company with 11-50 employees
From an end-user point of view, I am quite happy with Microsoft Exchange Online Protection (EOP) because my favorite feature is the ease with which I can identify if an email is a phishing email or spam email.
Business Process Manager/ Educational Technologist at a educational organization with 1,001-5,000 employees
 

Setup Cost

Fortinet FortiMail offers competitive appliance-based pricing, with flexibility and reliability, though higher than open-source alternatives.
Microsoft Exchange Online Protection pricing is seen as generally high, but justified by security features and Microsoft's reputation.
Fortinet FortiMail is considered overpriced by Indian rupee standards.
Head of computer systems at Indian Institute of Space Science & Technology(IIST)
The setup cost is a little bit costly.
Senior Cybersecurity Engineer at Kyndryl
I find the price of Microsoft Exchange Online Protection (EOP) to be fairly reasonable, and I have no problems with it.
Director at a tech services company with 11-50 employees
Microsoft Exchange is more expensive compared to other services like Gmail.
System Administrator at Shubham housing finance
The pricing is reasonable.
General Manager at Ambient iT
 

Valuable Features

Fortinet FortiMail provides strong security, usability, scalability, and performance for email threat detection and content control in diverse environments.
Microsoft Exchange Online Protection offers robust security features including anti-spam, anti-phishing, malware protection, scalability, and seamless Windows integration.
Its threat detection capabilities have been beneficial.
System admin at Environment Fund
The features I find most valuable in Fortinet FortiMail include its robust security and ease of use.
CTO at Exceed NetSec LLC
Fortinet FortiMail positively impacts my organization by reducing mail activities such as spam and phishing.
Senior Cybersecurity Engineer at Kyndryl
We've benefited from the anti-phishing features of Microsoft Exchange Online Protection (EOP), as it has been quite accurate and has eliminated most of our phishing emails, making it really impressive.
Director at a tech services company with 11-50 employees
In the last three years, has resulted in no antivirus problems.
Head of ICT infrustructure at a government with 501-1,000 employees
Another feature I appreciate is the ability to question things, as our Exchange server allows us to identify in real-time if an email is a phishing email or spam email.
Business Process Manager/ Educational Technologist at a educational organization with 1,001-5,000 employees
 

Categories and Ranking

Fortinet FortiMail
Ranking in Email Security
5th
Average Rating
8.6
Reviews Sentiment
6.8
Number of Reviews
68
Ranking in other categories
No ranking in other categories
Microsoft Exchange Online P...
Ranking in Email Security
8th
Average Rating
8.2
Reviews Sentiment
6.6
Number of Reviews
42
Ranking in other categories
Anti-Malware Tools (14th)
 

Mindshare comparison

As of August 2026, in the Email Security category, the mindshare of Fortinet FortiMail is 2.7%, down from 4.0% compared to the previous year. The mindshare of Microsoft Exchange Online Protection (EOP) is 3.0%, down from 5.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security Mindshare Distribution
ProductMindshare (%)
Fortinet FortiMail2.7%
Microsoft Exchange Online Protection (EOP)3.0%
Other94.3%
Email Security
 

Featured Reviews

Abhimanyu Das - PeerSpot reviewer
Senior Cybersecurity Engineer at Kyndryl
Targeted email filtering has reduced spam and phishing and now saves significant investigation time
The best features of Fortinet FortiMail include its techniques and tactics, which are highly effective compared to other solutions such as Microsoft 365. Although Fortinet FortiMail may not be as advanced in some aspects, it is well recognized for its strong performance in handling spam and phishing. It performs thorough mail scanning and also offers a sandboxing feature that enhances protection. Fortinet FortiMail has had a positive impact on my organization by significantly reducing unwanted email activities such as spam and phishing. It provides accurate detection and generates results that often exceed what can be achieved through manual analysis. Since deploying Fortinet FortiMail, I have observed a reduction in investigation time by at least 20 to 30 percent.
NancyHartman - PeerSpot reviewer
Business Process Manager/ Educational Technologist at a educational organization with 1,001-5,000 employees
Layered email security has protected sensitive research and still flags phishing in real time
The valuable features of Microsoft Exchange Online Protection (EOP) include providing an additional layer of protection, as it builds on the basic Exchange level of security that allows us to get our work done. Another feature I appreciate is the ability to question things, as our Exchange server allows us to identify in real-time if an email is a phishing email or spam email. It really helps us identify risks, especially through our external exchanges via email or through our cloud-based platforms. Our Exchange system blocks any embedded AI from all our applications and products, so we cannot use embedded AI in our daily work from our official laptops because we have secure information. The system is quite locked down.
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909,725 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Construction Company
9%
Financial Services Firm
8%
Manufacturing Company
8%
Computer Software Company
8%
Financial Services Firm
11%
Manufacturing Company
9%
Computer Software Company
8%
Government
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business32
Midsize Enterprise23
Large Enterprise15
By reviewers
Company SizeCount
Small Business24
Midsize Enterprise7
Large Enterprise11
 

Questions from the Community

What needs improvement with Fortinet FortiMail?
I think they should improve Fortinet FortiMail on-premises by enhancing its user interface. Additional features they could have in the future would include advanced analytics capabilities. I do thi...
What is your primary use case for Fortinet FortiMail?
I do have a partnership with Fortinet. I have been both a partner and reseller.
What needs improvement with Microsoft Exchange Online Protection?
From an end-user point of view, I am quite happy with Microsoft Exchange Online Protection (EOP) because my favorite feature is the ease with which I can identify if an email is a phishing email or...
What is your primary use case for Microsoft Exchange Online Protection?
Microsoft Exchange Online Protection (EOP) serves as the main use case for my company because, as a research company, we require a very high level of security. We use multiple authentication method...
What advice do you have for others considering Microsoft Exchange Online Protection?
My experience with Microsoft Exchange Online Protection (EOP) is from an end-user perspective, and I do not have admin management experience. I am not familiar with the Advanced Threat Protection f...
 

Also Known As

FortiMail
Microsoft EOP, MS Exchange Online Protection
 

Overview

 

Sample Customers

Magromer Cueros y Pieles S.A.
Information Not Available
Find out what your peers are saying about Fortinet FortiMail vs. Microsoft Exchange Online Protection (EOP) and other solutions. Updated: August 2026.
909,725 professionals have used our research since 2012.