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Fortinet FortiMail vs Sophos Email 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:
 

ROI

Sentiment score
7.4
Organizations saw increased productivity, cost savings, and enhanced security with Microsoft Defender for Office 365's advanced features.
Sentiment score
7.6
Fortinet FortiMail boosts email security, saves costs, reduces spam, and consolidates functions, increasing reliability and efficiency for users.
Sentiment score
8.7
Sophos Email delivers cost-efficient security and reduces unsolicited emails, enhancing ROI, particularly valuable for government contracts.
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 support is praised for responsiveness but has inconsistencies, especially in first-level assistance.
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
6.4
Sophos Email support is responsive but requires improvements in speed and expertise; users can contact via phone, chat, or email.
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.
When I reported a problem with our firewall, they acted promptly and delivered another piece of equipment.
 

Scalability Issues

Sentiment score
8.1
Microsoft Defender for Office 365 scales effectively, seamlessly expanding capacity with minimal maintenance, suitable for large and growing organizations.
Sentiment score
7.4
Fortinet FortiMail is scalable, integrates well with infrastructures, effectively handles email volumes, and is favored by various industries.
Sentiment score
7.3
Sophos Email is scalable and reliable for SMEs, though licensing and server maintenance can be challenging for larger use.
We have never faced scalability problems, and Microsoft manages it effectively.
 

Stability Issues

Sentiment score
7.7
Microsoft Defender for Office 365 is reliable, with 99.9% availability and efficient bug fixes, offering seamless performance and stability.
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
8.1
Sophos Email is reliable and stable, highly rated for handling significant email activity despite minor issues and update requests.
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 needs enhanced threat detection, integration, support, usability, documentation, and transparent pricing to address customer concerns.
Fortinet FortiMail needs upgrades in interface, integration, user management, security features, and overall user-friendliness for improved functionality.
Sophos Email needs better security, user interface, compatibility, and performance, with improvements in pricing and reporting features.
The main area for improvement is simplifying the implementation and rollout process.
Microsoft could improve by offering recommendations for domain spoofing attacks, especially scenarios where DNS records like SPF, DKIM, and DMARC are not properly published.
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.
Sophos Email does not work with split delivery.
 

Setup Cost

Microsoft Defender for Office 365, often pricey for SMEs, offers extensive security features with complex user-based licensing.
Fortinet FortiMail offers flexible, cost-effective pricing from $28,000 to $100,000, influenced by features, company needs, and regional factors.
Sophos Email offers reasonable pricing with flexible options, balancing affordability and features for various organizational needs.
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.
Sophos Email pricing is a bit high, especially since I purchase through a partner, and they sell it at a higher price since they also seek to make a profit.
 

Valuable Features

Microsoft Defender for Office 365 offers integrated protection with features like anti-malware and threat detection, enhancing security through AI.
Fortinet FortiMail offers advanced spam detection, easy management, comprehensive security, scalability, performance, and cost-effective email filtering with real-time updates.
Sophos Email provides robust security, AI-driven features, and seamless integration with Office 365 and Google Workspace for comprehensive protection.
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.
It provides a defense layer for email protection, scanning every incoming and outbound email for malware and spam.
The spam reduction feature in Sophos Email provides comfort when using 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
Sophos Email
Ranking in Email Security
10th
Average Rating
8.2
Reviews Sentiment
7.1
Number of Reviews
32
Ranking in other categories
Office 365 Protection (2nd)
 

Mindshare comparison

As of May 2025, in the Email Security category, the mindshare of Microsoft Defender for Office 365 is 12.9%, down from 18.3% compared to the previous year. The mindshare of Fortinet FortiMail is 4.9%, down from 5.9% compared to the previous year. The mindshare of Sophos Email is 2.2%, down from 2.7% 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.
NaveedAli - PeerSpot reviewer
Provides good identity proxy features, but sandboxing and spam control features could be improved
Sophos gives you a feature set to manage your on-premises firewall on the cloud. I just integrated my on-premises firewall into the cloud, and I can manage the tool through the cloud as well if needed. I recommend using Sophos Email as a proxy. For email gateways, I advise choosing mature products with rich feature sets, like Trend Micro or CrowdStrike. The solution's integration with other tools is very simple. I easily integrated Sophos Email with my Active Directory. My organization needs a WAF with a limited feature set, which we use through Sophos. Purchasing additional WAF will be costly, but I get sandboxing and WAF features free of cost with Sophos, which is included in the license. Overall, I rate the solution a seven out of ten.
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Top Industries

By visitors reading reviews
Computer Software Company
16%
Financial Services Firm
8%
Manufacturing Company
8%
Government
6%
Educational Organization
44%
Computer Software Company
9%
Financial Services Firm
6%
Government
4%
Computer Software Company
14%
Manufacturing Company
10%
Retailer
7%
Healthcare Company
7%
 

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 Sophos Email?
The solution's identity proxy feature is very good and reliable.
What is your experience regarding pricing and costs for Sophos Email?
Sophos Email pricing is a bit high, especially since I purchase through a partner, and they sell it at a higher price...
What needs improvement with Sophos Email?
Email installation could be more user-friendly so that it can be done without involving the partner. If made more use...
 

Also Known As

MS Defender for Office 365
FortiMail
Sophos Email Security
 

Overview

 

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Magromer Cueros y Pieles S.A.
Del Monte Foods, Terra Verde, spicerhaart, RIVERLITE, Dataprise, SureBridge, Reed's School, Sayfol International School
Find out what your peers are saying about Fortinet FortiMail vs. Sophos Email and other solutions. Updated: April 2025.
849,686 professionals have used our research since 2012.