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Fortra's Clearswift Secure Email Gateway 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:
 

Categories and Ranking

Microsoft Defender for Offi...
Sponsored
Ranking in Email Security
1st
Average Rating
8.2
Reviews Sentiment
7.1
Number of Reviews
48
Ranking in other categories
Advanced Threat Protection (ATP) (1st), Microsoft Security Suite (11th)
Fortra's Clearswift Secure ...
Ranking in Email Security
39th
Average Rating
8.6
Reviews Sentiment
7.1
Number of Reviews
0
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 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 Fortra's Clearswift Secure Email Gateway is 0.8%, up from 0.5% compared to the previous year. The mindshare of Sophos Email is 2.3%, 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.
it_user746937 - PeerSpot reviewer
Facilitates creation of your own content-filtering policies with relative ease
* Ability to create message bypasses for groups and/or individuals. Meaning, you do not have to "whitelist" email domains or addresses when a specific bypass will do. * Personal Message Manager (PMM): It allows users to release or delete quarantined messages. Also, allows users to add people to a Trusted Senders list. * Ability to create your own content-filtering policies with relative ease.
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.

Quotes from Members

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

Pros

"The product is not resource-intensive."
"At the moment we are satisfied with this product. It's a stable, scalable, and resilient solution for us."
"The risk level notifications are most valuable. We get to know what kind of intrusion or attack is there, and we can fix a problem on time."
"It also gives the vulnerability status according to the versions you have selected. Let's say you have Google Chrome. It mentions the versions it has, and it updates. Within two hours of an update, it is reflected in the dashboard. That's really nice to have."
"Microsoft Defender for Office 365's most valuable feature is its performance."
"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."
"The initial setup was easy."
"The deployment capability is a great feature."
"A stable solution."
"Ability to create your own content-filtering policies with relative ease."
"The solution protects users from phishing links and spam."
"The solution's identity proxy feature is very good and reliable."
"I rate Sophos Email nine point five."
"The most significant aspect is the response filtering concerning attachments and links."
"Sophos Email offers encryption and malware protection, provides visibility into emails, has 99% accuracy in catching spam, enhances organizational safety, integrates with various vendors like Microsoft, is deployable with any email service, prevents data loss, features authentication rules, synchronizes with Active Directory and Azure, and includes a self-service portal. The product is very flexible."
"I found the user interface friendly."
"I would recommend Sophos Email to both end-users and other entities that want to protect their emails."
"When you say email security, it's about everything, incoming email, outgoing email, spam, phishing emails, unwanted marketing emails. You can set rules, but the main feature of Sophos Email is to make sure you don't get hacked. 95% of people who are hacked do not get hacked by typing the router password. They are hacked from the inside out, which means they send you a document that is a zero-day attack, you open it, nothing happens, but technically the attack is running in the background of your computer. This is how they gain access to your PC."
 

Cons

"Configuring the default strategies and policies in Microsoft Defender for Cloud Apps generates a lot of noise and false positives."
"We need a separate license and we don't know how to get the license that is required."
"The UI needs to be more user-friendly."
"They have moved features from one console to another. Things have been moved around in the interface and it takes me time to find where certain features are."
"We are always looking for others tools to increase automation on tasks. There can be better integration with other solutions, such as PowerPoint and email."
"In some situations, it has not been able to pick impersonated emails having no attachments. Technical support definitely has a scope for improvement."
"They can improve their security in a way where a customer can know if all their attachments are safe or not to open through a report. The solution does its job perfectly, but it never reports to the customer whether those attachments have been stopped before or not."
"The pre-sales cost calculations could be more transparent."
"FTP server and TRUST Manager functionality."
"Malware needs improvement."
"The solution's sandboxing and spam control features could be improved."
"The tool has some performance issues and bugs, making it an area where improvements are required."
"Lacks visibility into spam emails."
"The solution has not found a way to block certain kinds of phishing emails."
"The tool’s stability should be improved."
"Email installation could be more user-friendly so that it can be done without involving the partner"
"The main drawback is regarding the technical support."
"Sophos Email could improve DLP features."
 

Pricing and Cost Advice

"Microsoft Defender for Office 365 is an add-on to the Office license. Many customers are purchasing this solution."
"It is much more expensive than using another solution because we have had to include some options and upgrade our license."
"While Microsoft Defender for Office 365 necessitates pricier E3 or E5 subscriptions, the extensive functionality offered by these licenses across various Microsoft products justifies the investment."
"The license is expensive because the cost is based on the number of users."
"The solution could be better by simplifying the business model of their licensing. It was hard to figure out how to get the licensing done for the environment, initially."
"Microsoft Defender for Office 365 comes with Microsoft Windows. It is free with the operating system."
"Defender for 365 comes in various plans and licenses, along with other Microsoft security solutions. Purchasing this kind of package or security bundle gives good value for money, and that's what I recommend."
"I know that the product is incredibly expensive."
Information not available
"The tool's pricing is medium."
"There is an additional fee for their central managed console."
"I rate the product's pricing a seven out of ten."
"It is an expensive solution. On a scale of one to ten, where one is low price, and ten is high price, I rate the pricing a seven."
"The pricing is quite reasonable, with a fixed cost and no additional charges."
"The solution is expensive."
"I would rate the pricing of Sophos Email as a six. It is considered affordable as a standalone product, and there are no additional costs besides licensing. The pricing is fixed."
"The product is cheaper compared to other solutions."
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Top Industries

By visitors reading reviews
Computer Software Company
16%
Financial Services Firm
9%
Manufacturing Company
8%
Government
6%
Computer Software Company
23%
Financial Services Firm
15%
Government
13%
Comms Service Provider
6%
Computer Software Company
14%
Manufacturing Company
9%
Comms Service Provider
7%
Retailer
7%
 

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?
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 ...
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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
No data available
Sophos Email Security
 

Overview

 

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Information Not Available
Del Monte Foods, Terra Verde, spicerhaart, RIVERLITE, Dataprise, SureBridge, Reed's School, Sayfol International School
Find out what your peers are saying about Fortra's Clearswift Secure Email Gateway vs. Sophos Email and other solutions. Updated: April 2025.
848,207 professionals have used our research since 2012.