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Microsoft Defender for Office 365 vs Sophos Email 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:
 

ROI

Sentiment score
7.2
Microsoft Defender for Office 365 enhances email protection, reduces costs, and increases productivity, offering invaluable data security.
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.
Overall, cost of owning and operating our system goes down.
In terms of the areas where I saw that return on investment with Microsoft Defender for Office 365, it is related to the risk to our environment, specifically regarding users being scammed or phished.
 

Customer Service

Sentiment score
7.0
Microsoft Defender for Office 365 offers reliable support, praised for responsiveness, despite some challenges with clarity and third-party resolutions.
Sentiment score
6.4
Sophos Email support is responsive but requires improvements in speed and expertise; users can contact via phone, chat, or email.
Over the past two years, there have been no critical problems.
we opened tickets, and they typically resolve them quickly.
My experience with customer support and technical support for Microsoft Defender for Office 365 has been excellent.
When I reported a problem with our firewall, they acted promptly and delivered another piece of equipment.
 

Scalability Issues

Sentiment score
8.2
Microsoft Defender for Office 365 scales seamlessly across configurations, supporting thousands of users with effortless integration and optimal performance.
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.
Microsoft Defender for Office 365 scales transparently for us, as we grew from 1,000 users to 3,000 users, and we didn't notice much difference.
 

Stability Issues

Sentiment score
7.7
Microsoft Defender for Office 365 is highly reliable, offering stable performance, quick issue resolution, and high user satisfaction ratings.
Sentiment score
8.1
Sophos Email is reliable and stable, highly rated for handling significant email activity despite minor issues and update requests.
I would assess the stability and reliability of Microsoft Defender for Office 365 as very stable, with barely any issues.
The solution is stable, as we have been using it for the past two years.
Overall, the stability and reliability of Microsoft Defender for Office 365 are good.
 

Room For Improvement

Microsoft Defender for Office 365 needs enhanced virus protection, compatibility, UI, integration, reporting, and cost transparency to improve user experience.
Sophos Email needs better security, user interface, compatibility, and performance, with improvements in pricing and reporting features.
Microsoft could improve by offering recommendations for domain spoofing attacks, especially scenarios where DNS records like SPF, DKIM, and DMARC are not properly published.
There is a different console for different things; I just want one consolidated console.
The main area for improvement is simplifying the implementation and rollout process.
Sophos Email does not work with split delivery.
 

Setup Cost

Enterprise users find Microsoft Defender for Office 365 pricing complex but valuable due to integration with Office 365 features.
Sophos Email offers reasonable pricing with flexible options, balancing affordability and features for various organizational needs.
We've likely saved 30% of costs.
Microsoft is quite affordable with a lot of features available for any size organization.
Money-wise, it is a part of the Office 365 suite, making it slightly more expensive compared to Trend Micro.
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 comprehensive security with real-time updates and automated threat response, enhancing multi-platform enterprise safety.
Sophos Email provides robust security, AI-driven features, and seamless integration with Office 365 and Google Workspace for comprehensive protection.
The value of the DLP feature is significant to us because we have internal data, sometimes sensitive, and the users may not always be aware of security and privacy, which might lead them to send out information mistakenly to external parties.
It provides end-to-end visibility on email threats such as phishing, extending beyond Exchange Online Protection.
It ranks the threats and allows us to prioritize those hitting us the hardest, such as email threats.
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...
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) (1st), Microsoft Security Suite (11th), Secure Email Gateway (SEG) (1st)
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 (1st)
 

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 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.
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%
Computer Software Company
13%
Manufacturing Company
10%
Healthcare Company
7%
Retailer
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 various email campaigns, pinpointing where they emanate from, and identifying the indi...
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 compared to Trend Micro. Although Defender is free, you have to pay separately f...
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 met, making it challenging to ensure every system is protected. Troubleshooting ...
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 since they also seek to make a profit.
What needs improvement with Sophos Email?
Sophos Email does not work with split delivery. If I have a domain with 100 mailboxes and want to protect only 50, it is not recommended by Sophos or not possible to configure.
 

Also Known As

MS Defender for Office 365
Sophos Email Security
 

Overview

 

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Del Monte Foods, Terra Verde, spicerhaart, RIVERLITE, Dataprise, SureBridge, Reed's School, Sayfol International School
Find out what your peers are saying about Microsoft Defender for Office 365 vs. Sophos Email and other solutions. Updated: April 2025.
850,834 professionals have used our research since 2012.
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