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IRONSCALES vs Sublime Security comparison

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Comparison Buyer's Guide

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
7.0
Number of Reviews
52
Ranking in other categories
Email Archiving (1st), Advanced Threat Protection (ATP) (2nd), Microsoft Security Suite (10th), Secure Email Gateway (SEG) (1st)
IRONSCALES
Ranking in Email Security
17th
Average Rating
9.2
Reviews Sentiment
7.6
Number of Reviews
13
Ranking in other categories
Advanced Threat Protection (ATP) (20th), Secure Email Gateway (SEG) (8th)
Sublime Security
Ranking in Email Security
22nd
Average Rating
9.0
Reviews Sentiment
7.2
Number of Reviews
1
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of July 2025, in the Email Security category, the mindshare of Microsoft Defender for Office 365 is 12.3%, down from 16.9% compared to the previous year. The mindshare of IRONSCALES is 1.9%, down from 2.4% compared to the previous year. The mindshare of Sublime Security is 1.6%, up from 0.7% 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.
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.
LARK IT - PeerSpot reviewer
Easy to setup, stable and highly scalable
The ability for users to look at their own quarantine box needs improvement. So at the moment, it doesn't give you the ability to see every email that has been quarantined. No end-user has the ability to see what's being quarantined. It's only people who have access to the back-end platform that can actually see what has been quarantined. The end user doesn't know if they have an email that has been quarantined, only if they're expecting something that didn't come through. In future releases, I would just like to see that ability for users to see what's being quarantined and what's not quarantined but safe. Just those genuine false positives.

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."
"The product is not resource-intensive."
"Microsoft Defender for Office 365 facilitates efficient management and updates through the cloud. We do not have to worry about incompatibilities. It just works."
"My experience deploying Microsoft Defender for Office 365 was seamless."
"The good part is that you don't have to configure it, which is very convenient."
"The most valuable feature is protection against malicious links, fishing, and impersonation. You can train people to be aware of these threats, but they're not always careful. When they're using their phones between meetings, they click on a link, and it's game over."
"The ability to respond to threats if very important."
"Does a thorough job of examining email and URLs for malicious content."
"It is a totally stable solution."
"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."
"Their anti-phishing platform is absolutely fantastic. The automated AI piece is amazing, and their technical support is fantastic."
"For what was being offered with IRONSCALES, I feel like we got an incredible deal."
"The report function through Gmail is probably the most valuable feature. The next most valuable features are simulation and training."
"The stability is good."
"For me, the mobile app is most valuable. All other features are also very useful, but the mobile app makes it really easy for me to manage on the go. I don't have to be at my desk. I could be at the shops, or it could be in the evening when I am out, and I can get a notification on my phone that there is an incident that has been raised. I can sort it out very quickly without having to be at my work PC."
"I like its ability to detect and block."
 

Cons

"The phishing and spam filters could use some improvement."
"There needs to be an improvement in integrating the product to work across multiple operating systems, and to have better support for non-Microsoft file types."
"The changes to customer service, specifically the new model for support agreements, are not favorable."
"Specifically, within Microsoft Defender for Office 365, I want it to improve the DLP capabilities."
"It would be better if it were more scalable. It depends on the architecture, but we would like to make it more scalable for both data centers."
"Configuration requires going to a lot of places rather than just accessing one tab."
"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."
"There is a different console for different things; I just want one consolidated console."
"I would like it if IRONSCALES had some sort of reminder mechanism, meaning IRONSCALES knows if a user completed the training or not. As long as it hasn't been completed, it keeps reminding every so often, alerts the manager, etc. Right now, it is all in the hands of the employee, and not all of them continue the process, which is a shame."
"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."
"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."
"I think the tool can continue to hone the product to ensure the detections are accurate."
"IRONSCALES should bundle more features together instead of separating them and charging additional licensing fees."
"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."
"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 ability for users to look at their own quarantine box needs improvement. So at the moment, it doesn't give you the ability to see every email that has been quarantined. No end-user has the ability to see what's being quarantined. It's only people who have access to the back-end platform that can actually see what has been quarantined. The end user doesn't know if they have an email that has been quarantined, only if they're expecting something that didn't come through."
 

Pricing and Cost Advice

"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."
"The pricing is normal. Considering its popularity, it's not overpriced."
"Microsoft Defender is expensive. I typically recommend it only if clients have the budget. Otherwise, I would suggest an alternative."
"Microsoft Defender for Office 365 comes with Microsoft Windows. It is free with the operating system."
"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."
"It's a user-base subscription."
"The product is expensive."
"The product is very expensive."
"They are pretty much the same as all the other competitors in the market."
"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."
"The product is available as a middle-priced tool. I think it is not the cheapest solution."
"As compared to everything else we looked at, it was good. It was the best value for the dollars."
"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."
"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 tool is not very cheap, but it is affordable."
"IRONSCALES is an expensive solution."
"I would rate the pricing of Sublime Security as a seven out of ten. It is reasonably well-priced."
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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
19%
Manufacturing Company
9%
Financial Services Firm
6%
University
6%
Computer Software Company
15%
Financial Services Firm
8%
Manufacturing Company
7%
Retailer
6%
 

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...
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...
What do you like most about Sublime Security?
I like its ability to detect and block.
What is your experience regarding pricing and costs for Sublime Security?
I would rate the pricing of Sublime Security as a seven. It is reasonably well-priced.
What needs improvement with Sublime Security?
The ability for users to look at their own quarantine box needs improvement. So at the moment, it doesn't give you th...
 

Also Known As

MS Defender for Office 365
No data available
No data available
 

Overview

 

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Allegheny Millwork, Ayrshire College, Nium, Orris, Paramount School District, Pres Les, PRT Staffing, Recovery Unplugged, Telit, WebHelp
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Find out what your peers are saying about Microsoft, Proofpoint, Abnormal Security and others in Email Security. Updated: June 2025.
860,592 professionals have used our research since 2012.