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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
8.4
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)
Darktrace
Ranking in Email Security
9th
Average Rating
8.2
Reviews Sentiment
7.2
Number of Reviews
79
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) (11th), Attack Surface Management (ASM) (3rd), AI-Powered Cybersecurity Platforms (2nd)
Heimdal Email Security
Ranking in Email Security
59th
Average Rating
9.0
Reviews Sentiment
7.9
Number of Reviews
1
Ranking in other categories
Fraud Detection and Prevention (70th)
 

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 Darktrace is 3.1%, up from 1.1% 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 benefit that stands out to me is the ability for multiple individuals to collaborate simultaneously within the same document. Additionally, there is the option to save the document directly in the integrated OneDrive or SharePoint."
"My experience with customer support and technical support for Microsoft Defender for Office 365 has been excellent."
"The deployment capability is a great feature."
"Does a thorough job of examining email and URLs for malicious content."
"Microsoft Defender for Office 365 has improved my organization's security. It makes it easier to manage the infrastructure without the help of third-party applications."
"The initial setup was easy."
"The most valuable feature of Microsoft Defender for Office 365 is its spam filter."
"Scalability-wise, I do not think there are any issues so far."
"What I like about Darktrace, is that you can quickly identify threats."
"It is a very simple product to use."
"Artificial intelligence and machine learning functionalities are valuable."
"It is a stable solution."
"I find the complete portfolio to be excellent."
"I have found the automation and AI features to be valuable. If someone were to come in to the office at midnight and log in, Darktrace would flag it."
"The scalability of Darktrace is very high."
"Implementing this solution has given us confidence that we are secure."
"It is stable and reliable."
 

Cons

"Specifically, within Microsoft Defender for Office 365, I want it to improve the DLP capabilities."
"There is a different console for different things; I just want one consolidated console."
"Configuration requires going to a lot of places rather than just accessing one tab."
"Configuring the default strategies and policies in Microsoft Defender for Cloud Apps generates a lot of noise and false positives."
"In some situations, it has not been able to pick impersonated emails having no attachments. Technical support definitely has a scope for improvement."
"The UI needs to be more user-friendly."
"One area for improvement is integration. For example, when it comes to external SaaS platforms, we were not able to get a lot of information on integrations with such apps for security and authentication."
"We need a separate license and we don't know how to get the license that is required."
"There is a high ratio of false positive information."
"One area for improvement is the alerting system, which generates too many alerts and becomes labor-intensive for organizations not equipped with enough personnel in their SOC."
"Darktrace should have more automation and integrations with other security monitoring tools."
"It would be helpful if they could recognize incidents and simplify the customer's challenge to identify what is happening."
"The module can improve so that every time it's more intelligent."
"The interface is too mathematical and it should be simplified."
"In the next version, I'd like to see penetration testing."
"The one downside is the pricing, which is quite high."
"The solution could be less expensive."
 

Pricing and Cost Advice

"The pricing is normal. Considering its popularity, it's not overpriced."
"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."
"The pricing has become expensive."
"I know that the product is incredibly expensive."
"It's a user-base subscription."
"Defender is a little bit more expensive as compared to others. We are in the manufacturing environment. So, we don't have a high budget for all of our endpoint devices. Its cost is a major concern for us."
"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 is an add-on to the Office license. Many customers are purchasing this solution."
"We've budgeted about 50,000 Kuwaiti dinars for the solution. That is a yearly operating cost."
"Darktrace is pricey, but the price is reasonable for what the solution does, and it's comparable to other products."
"Darktrace is expensive. You can pay for the license yearly."
"This solution is expensive."
"We had an issue with pricing initially and had to cancel some of the features of the projects to fit the budget. I would like to see pricing that is not broken up into parts so that we can buy the whole package once. Darktrace is more expensive than an average solution, but it's functionality won't match that of an average solution."
"It is inexpensive considering what it can do and the competition."
"The pricing is very flexible for Darktrace. Sometimes, a customer does not have the appropriate budget, but Darktrace can handle that. They offer monthly payments, so the customer can acquire the solution very easily."
"The pricing is quite high, estimated at around $350,000 per year."
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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
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?
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 ...
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
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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, Proofpoint, Cisco and others in Email Security. Updated: April 2025.
850,671 professionals have used our research since 2012.