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Heimdal Email Security vs IRONSCALES comparison

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Executive Summary

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
8.4
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)
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)
IRONSCALES
Ranking in Email Security
18th
Average Rating
9.2
Reviews Sentiment
7.6
Number of Reviews
13
Ranking in other categories
Advanced Threat Protection (ATP) (18th), Secure Email Gateway (SEG) (8th)
 

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 Heimdal Email Security is 0.2%, up from 0.0% compared to the previous year. The mindshare of IRONSCALES is 1.9%, down from 2.3% 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.
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…
Orion Trist - PeerSpot reviewer
Saved us a big deal by catching malicious links and attachments sent directly to our staff and has also been helpful for educating our staff
It has helped immensely because it has gotten rid of malicious links and malicious attachments that have been targeted at our different staff members. It has definitely protected us on more than one occasion. Their integrated approach of combining email security and employee awareness training is excellent because the training is a reminder for staff to continually be on their feet and look out for the ever-changing landscape. It also lets us know who has been trained, who hasn't been trained, and what they're like. It integrates a risk ratio for all our employees. Its artificial intelligence and machine learning capabilities are very important because I don't want to have to manage 24/7. Having the AI to do a lot of the work for me is invaluable. Its automated detection and response capabilities are excellent. It does a wonderful job. They provide all the stats on what it has done. It gives you information about how much time is saved and all that kind of good information. Its automated detection and response capabilities have massively decreased the time we spend manually reviewing email events. Since May, it has taken care of 170 hours. So, it has saved 88 hours per analyst. It is very good in terms of the customization of the automated detection and response capabilities. It is granular, and you can adjust it however you want. If it is too high, you can turn it down. If it is too low, you can turn it up.

Quotes from Members

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

Pros

"I like its investigation capabilities, as that is what is most important to me. It is fairly simple with a user-friendly interface."
"Microsoft Defender for Office 365's most valuable features are safe attachments and safe links."
"Microsoft Defender has a feature to protect each and every attachment. Even if it's an encrypted attachment, it will check for any potential threats."
"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 two main features that prove most beneficial for us are URL scanning and attachment scanning."
"The DLP feature of Microsoft Defender for Office 365 is valuable, and we also use the DLP feature for email real-time detection."
"My experience deploying Microsoft Defender for Office 365 was seamless."
"The email protection is excellent, especially in terms of anti-phishing policies."
"It is stable and reliable."
"I would say the most valuable feature is what they call Themis. It's like a virtual analyst that uses the decisions that system admins make to generate a score for whether an email is legitimate, spam, or phishing. It gets better based on the decisions that we make over time. The automation piece is great as well. The integrated approach of email security combined with employee awareness training is excellent."
"The solution captures a bit more of the unknown, quantifies it, and applies intelligence to it to pick out and stop a lot of phishing emails that come through."
"There is buzz around phishing awareness training. When I make a campaign, all of a sudden people in our organization are talking, thinking, and wondering about it. Therefore, it keeps people on their toes. That is perfect because it does exactly what we want it to do."
"AI-driven phishing detection and incident remediation are valuable. It saves time from having to do manual analysis and investigation, and we also get alerts for phishing emails."
"The report function through Gmail is probably the most valuable feature. The next most valuable features are simulation and training."
"Their anti-phishing platform is absolutely fantastic. The automated AI piece is amazing, and their technical support is fantastic."
"The stability is good."
"The biggest benefit is that we get fewer phishing and spam emails, so using IRONSCALES has made our environment much safer."
 

Cons

"Sometimes, phishing emails manage to pass through the filter, so the system needs to enhance its phishing email detection capabilities."
"There is room for improvement in terms of reporting."
"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."
"The visibility into threats is not up to the mark, as I do not have control. I rate my experience with Microsoft Defender for Office 365 as six out of ten due to troubleshooting and pricing concerns."
"Specifically, within Microsoft Defender for Office 365, I want it to improve the DLP capabilities."
"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."
"We noticed that from time to time, Microsoft's stability does have problems. Sometimes the service goes up and down. Sometimes they change without prior notice."
"Configuration requires going to a lot of places rather than just accessing one tab."
"The solution could be less expensive."
"The tool supports 15 to 16 languages, but the content it uses in the training in Spanish has certain limitations."
"Even though they have been continuously improving it, it is not 100% there. We have had a few incidents where legitimate emails were getting blocked, and we had to manually remove those emails from quarantine. It is 90% effective or accurate because, on rare occasions, some emails from customers were not getting delivered. In one or two instances, their emails got blocked by IRONSCALES, and we had to manually remove the emails from quarantine. I would like them to improve their algorithm to avoid flagging genuine emails as malicious. I would also like to be able to whitelist certain email addresses. I'd love to be able to whitelist a particular customer."
"There's room for improvement in the campaign management. IRONSCALES has many built-in templates that I use, but you can also build templates from scratch. However, the interface for creating custom templates needs to be updated."
"The only thing that I could say is that some of the reporting features could be better."
"There is a feature called Account Takeover, which isn't what I want it to be able to do. I know that they're working on that, but when they first started the Account Takeover feature in incident management, it didn't have much information. It didn't have any usability to it. I already had tools in place that were better."
"I would love to see the indication of compromise and how the solution utilizes open source resources. It would be good to see that included in the paid versions. It would be a small addition but add a lot of value for clients."
"Its UI could be improved. My pet peeve with a lot of these cloud-based systems is that a lot of times, the interface for the management is a little clunky. If you live and breathe IRONSCALES all day long, you'll obviously know where everything is just from muscle memory, but the system is not designed for people to be in it all day long. You're only supposed to occasionally look at it. When things get moved around, it is not necessarily that intuitive. I'm an IT guy, and I can pretty much take the worst UI and figure it out, but the menus and the options in the interface could be a little cleaner graphically. If you have a quick problem that you want to resolve, it takes a little bit of digging in the admin console, whereas it should take a few clicks up front."
"The integration with Google Suite needs to be better. it's something they can work on."
 

Pricing and Cost Advice

"I was working in the government and it was too expensive for us to use our Microsoft products."
"The license is expensive because the cost is based on the number of users."
"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."
"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 is an add-on to the Office license. Many customers are purchasing this solution."
"Microsoft Defender is expensive. I typically recommend it only if clients have the budget. Otherwise, I would suggest an alternative."
"The pricing has become expensive."
"The product is expensive."
Information not available
"They are pretty much the same as all the other competitors in the market."
"IRONSCALES is an expensive solution."
"There is an installation cost. Since we have this as a managed service, we pay for licensing and the managed service itself. Other than that, there are no additional costs."
"The product is available as a middle-priced tool. I think it is not the cheapest solution."
"We pay $3000 plus a little more a year for the number of employees we have, and we're not even that big. The solution is at the higher end in terms of cost. It's not the most expensive product, but I would say it's worth the price if you have a high volume of email traffic. In our case, the solution has inspected over 162,000 emails between three and four months. It saved us a lot of time and money. It's a worthwhile investment because a bad actor only has to succeed once; we must defend against everything in our business. IRONSCALES offers a sense of security and confidence from being well protected."
"As compared to everything else we looked at, it was good. It was the best value for the dollars."
"The tool is not very cheap, but it is affordable."
"Considering the value it provides, it is definitely worth the cost. We don't have to do manual analysis and remediation of phishing emails, which saves us a lot of hours. Its licensing is based on the number of users being supported and the number of email addresses being protected. I'm not aware of any additional costs."
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Top Industries

By visitors reading reviews
Computer Software Company
16%
Financial Services Firm
9%
Manufacturing Company
8%
Government
6%
No data available
Computer Software Company
18%
Manufacturing Company
9%
Financial Services Firm
7%
University
5%
 

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?
Microsoft is quite affordable with a lot of features available for any size organization.
What needs improvement with Microsoft Defender for Office 365?
Microsoft could improve by offering recommendations for domain spoofing attacks, especially scenarios where DNS recor...
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What do you like most about IRONSCALES?
The solution captures a bit more of the unknown, quantifies it, and applies intelligence to it to pick out and stop a...
What is your experience regarding pricing and costs for IRONSCALES?
The product is available as a middle-priced tool. I think it is not the cheapest solution. There are other solutions ...
What needs improvement with IRONSCALES?
I think maybe on the side of the awareness training, the tool can improve a little more information and have some oth...
 

Also Known As

MS Defender for Office 365
MailSentry
No data available
 

Overview

 

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Brother, Symbion, CPH West
Allegheny Millwork, Ayrshire College, Nium, Orris, Paramount School District, Pres Les, PRT Staffing, Recovery Unplugged, Telit, WebHelp
Find out what your peers are saying about Microsoft, Proofpoint, Cisco and others in Email Security. Updated: May 2025.
851,604 professionals have used our research since 2012.