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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 most valuable feature of Microsoft Defender for Office 365 is its spam filter."
"The two main features that prove most beneficial for us are URL scanning and attachment scanning."
"Scalability-wise, I do not think there are any issues so far."
"It gives us visibility into threats and, for endpoints, it helps us to prioritize threats. We used to have a lack of visibility, but now our time to detect and respond has decreased."
"The product's scalability is good."
"The most valuable feature of Microsoft Defender for Office 365 is data backups that we can provide through ticket requests."
"Since we have started using the solution, there have been fewer compromises."
"Microsoft Defender for Office 365 facilitates efficient management and updates through the cloud. We do not have to worry about incompatibilities. It just works."
"The product can scale."
"The ability to detect activity on the network is very useful to us. Even if it's not necessarily an illegal activity, if it is abnormal activity, it is able to detect it and notify us."
"It is a very simple product to use."
"Darktrace is very useful for us because it has a large number of models for detecting threats."
"Implementing this solution has given us confidence that we are secure."
"The platform has many modules, and each module examines a different situation in the behavior."
"It's a very stable product."
"The most valuable feature is that it works autonomously."
"It is stable and reliable."
 

Cons

"The changes to customer service, specifically the new model for support agreements, are not favorable."
"Microsoft needs to broaden its global support presence by establishing teams of subject-matter experts in all regions."
"About eight months ago, we started to measure the quantity of phishing and spam that we have been receiving, and it has been increasing a lot. That means that protection for our email is not as good as we were expecting."
"The XDR dashboard has room for improvement."
"We need a separate license and we don't know how to get the license that is required."
"Microsoft Defender for Office 365 could improve by giving customers information on techniques to prevent threats. For example, information about best practices on how to protect their own devices against hackers and scammers, such as educational information or training. This would help others have a better understanding of cyber security. Additionally, there can be more security features added."
"The certification training for Defender for 365 needs to be deeper and incorporate Sentinel. I took all the security courses except one, and Sentinel isn't included."
"In one of the reports I can get the exact place where a vulnerable file resides. But for that, I need to explicitly go into the device and check. If they could include that file part in the report, without my having to go to the device itself, that would help."
"It's quite expensive to have."
"Darktrace needs significant improvement in its notification capabilities."
"I was under impression that Darktrace's automatic blocking would be an out-of-the-box feature, but we had to integrate it with our firewall to get it to block automatically. The salesperson should be upfront and explain that you need to integrate it with your network. I would also like to see more reporting on risk. Banks in my region want to see at a glance the risk level of various assets."
"The price point for the product was too high for what our possible use case could be."
"This product needs more in terms of prevention. The detection capabilities work well but once a threat has been detected, Darktrace should work to prevent it from doing anything malicious."
"The Darktrace Mobile app needs improvement as it's currently limited in functionality, and the learning AI takes a while to adapt to new devices, flagging new users as threats for up to a month before recognizing them as regular network users."
"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."
"The level of tracking within the network from the transmission level up to the machine level can use improvement."
"The solution could be less expensive."
 

Pricing and Cost Advice

"The product is expensive."
"The pricing is normal. Considering its popularity, it's not overpriced."
"For large enterprise organizations, they can definitely afford it, but for small and medium organizations, they might struggle to cover the expenses."
"The product is very expensive."
"Microsoft Defender is expensive. I typically recommend it only if clients have the budget. Otherwise, I would suggest an alternative."
"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."
"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."
"Microsoft Defender for Office 365 comes with Microsoft Windows. It is free with the operating system."
"It's an expensive solution."
"We've budgeted about 50,000 Kuwaiti dinars for the solution. That is a yearly operating cost."
"There is an annual license to use Darktrace."
"When it comes to large installations, it can be expensive, but for small accounts it's fine."
"It is inexpensive considering what it can do and the competition."
"All of the other modules, such as the licensing modules, are on par. It's one for one."
"The cost is moderate."
"Prior to negotiating, Darktrace offered their appliance and service for $80,000 per year."
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.
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