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Darktrace vs Heimdal Email Security comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Mar 9, 2025

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...
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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)
Darktrace
Ranking in Email Security
9th
Average Rating
8.2
Reviews Sentiment
7.2
Number of Reviews
77
Ranking in other categories
Intrusion Detection and Prevention Software (IDPS) (1st), Network Traffic Analysis (NTA) (1st), Network Detection and Response (NDR) (1st), Extended Detection and Response (XDR) (6th), AI-Powered Chatbots (2nd), Cloud Security Posture Management (CSPM) (15th), Cloud-Native Application Protection Platforms (CNAPP) (12th), Attack Surface Management (ASM) (3rd), AI-Powered Cybersecurity Platforms (2nd)
Heimdal Email Security
Ranking in Email Security
62nd
Average Rating
9.0
Reviews Sentiment
7.9
Number of Reviews
1
Ranking in other categories
Fraud Detection and Prevention (67th)
 

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 Darktrace is 3.1%, up from 0.9% compared to the previous year. The mindshare of Heimdal Email Security is 0.2%, up from 0.0% 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.
Peter-Murphy - PeerSpot reviewer
Enables proactive threat detection and immediate response through AI monitoring
The most valuable feature of Darktrace is its ability to detect and counter threats before they occur. The autonomous response capability is always enabled, blocking threats immediately without hesitation. Additionally, the Darktrace email platform is a significant asset since it addresses incoming threats before they reach the network, enhancing our security measures. Protecting the business is essential, and ensuring security through 24/7 AI monitoring is invaluable.
Melvin Ong - PeerSpot reviewer
Straightforward to set up, reliable, and offers good functionality
We primarily use the solution for email security and general email management.  It's improved our productivity.  The solution works well overall. The functionality is very good.  The setup process is easy.  It is stable and reliable. It's scalable.  I don't have any specific areas that need…

Quotes from Members

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

Pros

"The technical support is good and quick to resolve issues."
"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."
"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 most valuable feature of Microsoft Defender for Office 365 is the ease of use."
"We use Microsoft Defender for its ability to integrate with existing business technologies, which is beneficial for protecting business areas."
"I would say that 90% of the spam and phishing attack emails get blocked right off the bat."
"Defender for Office 365 has helped eliminate having to look at multiple dashboards and that is the aspect I like most about it. It is simpler, effective, and convenient. The users like the process efficiency."
"Microsoft Defender for Office 365's most valuable feature is its performance."
"Technical support is helpful and responsive."
"The most valuable features of Darktrace are its full capabilities. You have visibility of everything."
"We liked their approach to identifying intrusions or network anomalies using AI."
"The investigative part of Darktrace is valuable, especially the automation features. It allows setting up checks and provides guidance on mitigating situations, which is very useful. There are different modules that you can add to the console for protection."
"It is a stable solution without downtime."
"A simple, powerful AI solution that just does all the work for you when you turn it on."
"The solution can scale."
"It is very stable and easy to use."
"It is stable and reliable."
 

Cons

"Microsoft needs to broaden its global support presence by establishing teams of subject-matter experts in all regions."
"The pre-sales cost calculations could be more transparent."
"Too many false positives and lacks an accurate capability to detect malicious SharePoint sites."
"I am generally satisfied with how it currently is. If I could improve anything, I would reduce the cost."
"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."
"The phishing and spam filters could use some improvement."
"We need to be able to whitelist data at the backend."
"Microsoft should provide more documentation for users so they can self-educate. I would like to see more documentation for advanced security features."
"Darktrace could improve by being more user-friendly."
"I would like for the product to work on the endpoints as well. I would like to see enhanced visibility into the endpoints and network but this solution only sits on the network itself."
"In an upcoming release, there could be more customizable playbooks or a library of playbooks to choose from."
"I did not use the AI features because they should make it more user-friendly which would be a benefit. Additionally, the solution could integrate with more SIEM or SOAR tools."
"It is expensive, but everything else has been great so far."
"It takes time to go through the interface and pick up things. If it were a more straightforward interface, then it would free up time."
"It would be good if they can include some endpoint protection for remote workers. Nowadays, most people are working remotely. Therefore, they should include some type of sensors that can be installed on the endpoint in order to directly report the main usage and protect remotely. Phone protection will also be a great feature to add to Darktrace."
"It would be useful if there was a way to check to see if there are certain devices that are not in sync with the solution. I'm not sure if this is an option or not."
"The solution could be less expensive."
 

Pricing and Cost Advice

"The license is expensive because the cost is based on the number of users."
"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."
"Microsoft Defender for Office 365 is an add-on to the Office license. Many customers are purchasing this solution."
"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."
"I know that the product is incredibly expensive."
"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."
"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."
"Darktrace is pricey, but the price is reasonable for what the solution does, and it's comparable to other products."
"It is expensive."
"All of the other modules, such as the licensing modules, are on par. It's one for one."
"They are too expensive compared with other vendors."
"It was $3,600 a month or $2,000 plus or so. I am not sure. Its licensing is pretty simple."
"The product is expensive."
"It is a very expensive product."
"The pricing is reasonable."
Information not available
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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
14%
Manufacturing Company
8%
Financial Services Firm
8%
Government
7%
No data available
 

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?
I don't have detailed specifics on pricing, setup cost, or licensing.
What needs improvement with Microsoft Defender for Office 365?
I am generally satisfied with how it currently is. If I could improve anything, I would reduce the cost.
How does Crowdstrike Falcon compare with Darktrace?
Both of these products perform similarly and have many outstanding attributes. CrowdStrike Falcon offers an amazing u...
Which is better - SentinelOne or Darktrace?
Which solution is better depends on which is more suitable specifically for your company. Darktrace, for example, is ...
What do you like most about Darktrace?
A very useful feature in Darktrace for real-time threat analysis is the packet inspection that analyzes the packet tr...
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Also Known As

MS Defender for Office 365
No data available
MailSentry
 

Overview

 

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Irwin Mitchell, Open Energi, Wellcome Trust, FirstGroup plc, Virgin Trains, Drax, QUI! Group, DNK, CreaCard, Macrosynergy, Sisley, William Hill plc, Toyota Canada, Royal British Legion, Vitol, Allianz, KKR, AIRBUS, dpd, Billabong, Mclaren Group.
Brother, Symbion, CPH West
Find out what your peers are saying about Microsoft, Cisco, Proofpoint and others in Email Security. Updated: March 2025.
844,944 professionals have used our research since 2012.