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Fortinet FortiMail vs Fortra's Agari comparison

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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

Microsoft Defender for Offi...
Sponsored
Ranking in Email Security
1st
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
52
Ranking in other categories
Email Archiving (1st), Advanced Threat Protection (ATP) (2nd), Microsoft Security Suite (10th), Secure Email Gateway (SEG) (1st)
Fortinet FortiMail
Ranking in Email Security
7th
Average Rating
8.6
Reviews Sentiment
7.0
Number of Reviews
64
Ranking in other categories
No ranking in other categories
Fortra's Agari
Ranking in Email Security
38th
Average Rating
8.6
Reviews Sentiment
7.2
Number of Reviews
4
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2025, in the Email Security category, the mindshare of Microsoft Defender for Office 365 is 12.6%, down from 17.6% compared to the previous year. The mindshare of Fortinet FortiMail is 4.8%, down from 6.0% compared to the previous year. The mindshare of Fortra's Agari is 0.7%, up from 0.6% 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.
TF
Helps to detect and generate reports on phishing emails and saves from email compromises
We use the solution for marketing and brand protection.  I am impressed with the tool's discovery capabilities which help me find out who is sending the emails on the company's behalf. I also find the ability to detect and generate reports on phishing emails a valuable feature.  The product's…

Quotes from Members

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

Pros

"Defender enables us to secure all 365-related activity from a single place. It gives us visibility into everything happening in Outlook, protecting us against phishing and other email-based threats. Defender helps us detect any suspicious behaviors."
"Microsoft Defender for Office 365 has improved my organization's security. It makes it easier to manage the infrastructure without the help of third-party applications."
"Microsoft Defender has a feature to protect each and every attachment. Even if it's an encrypted attachment, it will check for any potential threats."
"My experience with customer support and technical support for Microsoft Defender for Office 365 has been excellent."
"Defender for 365 is a comprehensive cloud-based solution. The value of the cloud is that you aren't alone. Threat intelligence and analytics are shared in the cloud. We don't have to find the solution alone. If you face an unknown threat with traditional solutions like Trend Micro and Symantec, you need to open a case and send your information to them to analyze forensically and identify the source of the attack."
"Threat Explorer is an invaluable tool for me, and it plays a crucial role in helping me discern the origins of various email campaigns, pinpointing where they emanate from, and identifying the individuals within our organization who are affected."
"The technical support is good and quick to resolve issues."
"Microsoft Defender for Office 365's most valuable features are safe attachments and safe links."
"Clean user interface and good sandbox."
"The user quarantine feature in the solution is good...It is a stable solution."
"A full-featured email gateway solution that contains security threats reliably."
"The important feature is the application control, which makes administration much easier. It also has an intrusion prevention feature. There's also the wireless functionality, which works well with Huawei devices."
"The most valuable feature of this solution is the spam filter."
"Fortinet utilizes specialized processing units, which network faster and sample more efficiently compared to others."
"The most valuable feature of Fortinet FortiMail is its fully detailed dashboard."
"The solution is very, very stable."
"I am impressed with the tool's discovery capabilities which help me find out who is sending the emails on the company's behalf. I also find the ability to detect and generate reports on phishing emails a valuable feature."
"It comes with a lot of helpful tips for complicated areas."
"If spam or some kind of malicious email gets past Mimecast and gets into our email environment, we can go into Agari and we can search for it."
"It is really important for large companies to have the brand protection that is provided by Agari."
 

Cons

"Configuration at the mid-level could be improved for the support team."
"The XDR dashboard has room for improvement."
"Configuration requires going to a lot of places rather than just accessing one tab."
"The only thing they should improve is the licensing model. They should stop changing it. A year ago, the five features I mentioned were included in one product. Now, three of them are bundled into one product, and you have to pay extra for the other two. I don't mind paying extra, but I don't want them to change it every year or every six months. I need to know what I'm looking at and not worry about it next year."
"In some situations, it has not been able to pick impersonated emails having no attachments. Technical support definitely has a scope for improvement."
"It would be better if it were more scalable. It depends on the architecture, but we would like to make it more scalable for both data centers."
"Several simulation options are available within 365, and the phishing simulation could be better."
"Microsoft needs to broaden its global support presence by establishing teams of subject-matter experts in all regions."
"The product should work on licensing and provide more detail once the license is selected for the customer."
"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 FortiGate."
"They should add a lot of threat-intelligence feeds from different sources - not only from one source (FortiGuard)."
"The product's price is an area with shortcomings, making it an area where improvements are required."
"An additional feature that could be added is a pop-up screen notifying you that an email has been blocked, without having to double click on it to take you there it could provide you with a summary explaining why it was on hold or why was it spam when you hover over it with your cursor."
"I think they need to look into it and improve their signatures. This will help with blocking incoming spam emails."
"The statistics and BI in general could be improved."
"It would be nice if we could manage the solution from the cloud so I could handle things off-site if necessary."
"The protocol is quite complicated, which may not be something that could be improved, but it would be better if it was simplified."
"The product's user interface is clunky. We have difficulty in finding what we need. I would also like to see automation in the onboarding processes."
"Some customers in the financial sector do not like the cloud solution because they don't want data to be transferred to a US-based cloud."
 

Pricing and Cost Advice

"For licensing, it's usually a yearly package for customers who are subscribed to Office 365, but they can also pay on a monthly basis."
"The product is expensive."
"The pricing has become expensive."
"From the pricing point of view, like any other product in the market, there is scope for negotiation."
"For large enterprise organizations, they can definitely afford it, but for small and medium organizations, they might struggle to cover the expenses."
"Microsoft Defender for Office 365 comes with Microsoft Windows. It is free with the operating system."
"It is much more expensive than using another solution because we have had to include some options and upgrade our license."
"It's a user-base subscription."
"The pricing is on the higher side."
"The fees for Fortinet FortiMail can be complicated. However, overall the pricing is fair."
"FortiMail is not cheap."
"The licensing model for this solution is better because it is based on the box and not the number of users."
"The pricing is good."
"We paid approximately $30,000 for the solution. It is less expensive than some other solutions. We have one license that carries all the features that we wanted."
"This is a good solution and value for the money."
"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 pricing depends on the number of users; per how many mailboxes you have, but they're pretty negotiable with that, too."
"The price of the licensing is based on the volume of email."
"The tool is not expensive and I would rate its pricing a four out of ten."
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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
31%
Computer Software Company
11%
Financial Services Firm
8%
Government
5%
Financial Services Firm
16%
Computer Software Company
13%
Media Company
11%
Manufacturing Company
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

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?
Microsoft is quite affordable with a lot of features available for any size organization.
What needs improvement with Microsoft Defender for Office 365?
Microsoft could improve by offering recommendations for domain spoofing attacks, especially scenarios where DNS recor...
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 acad...
What needs improvement with Fortinet FortiMail?
Fortinet FortiMail should keep pace with features offered by cloud-based services like Google and Microsoft Outlook. ...
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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.
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Find out what your peers are saying about Fortinet FortiMail vs. Fortra's Agari and other solutions. Updated: June 2025.
856,874 professionals have used our research since 2012.