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IRONSCALES vs Microsoft Defender for Office 365 comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Dec 1, 2024

Review summaries and opinions

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

ROI

Sentiment score
5.6
Businesses find IRONSCALES offers significant ROI by saving time, reducing intervention, and enhancing cybersecurity with minimal licensing costs.
Sentiment score
6.9
Microsoft Defender for Office 365 offers strong ROI through security enhancements, cost savings, and improved company productivity despite measurement challenges.
It has also decreased our time to detection and response by about 15 to 20 percent.
Technology support manager at Alfred State College
Overall, cost of owning and operating our system goes down.
Designation Chief Consultant at Avtow
It's hard to quantify the return on investment we've seen from Microsoft Defender for Office 365.
Chief Architect at a tech vendor with 1,001-5,000 employees
 

Customer Service

Sentiment score
7.4
IRONSCALES customer service is praised for responsiveness, knowledgeable staff, and high satisfaction, despite minor delays.
Sentiment score
5.8
Microsoft Defender for Office 365 users rate support highly, praising its responsiveness and 24/7 availability, despite occasional documentation and communication issues.
Customer support for IRONSCALES is outstanding.
Email Security Analyst at a computer software company with 51-200 employees
I would rate their technical support as very good, as they respond promptly when my team opens a ticket.
Systems Engineer at a tech services company with 10,001+ employees
Over the past two years, there have been no critical problems.
Solution Consultant at BIM Group of Companies
we opened tickets, and they typically resolve them quickly.
Chief Architect at a tech vendor with 1,001-5,000 employees
With a subscription for Microsoft Defender for Office 365, it is an eight. Without it, it is a six.
Manager at a tech services company with 10,001+ employees
 

Scalability Issues

Sentiment score
6.6
IRONSCALES offers seamless scalability, easy integration, and cloud-based flexibility, supporting growing businesses without performance issues or maintenance burdens.
Sentiment score
7.8
Microsoft Defender for Office 365 offers scalable, efficient protection for large enterprises, ensuring seamless growth across diverse industries.
We have never faced scalability problems, and Microsoft manages it effectively.
Solution Consultant at BIM Group of Companies
Microsoft Defender for Office 365 scales transparently for us, as we grew from 1,000 users to 3,000 users, and we didn't notice much difference.
Chief Architect at a tech vendor with 1,001-5,000 employees
Microsoft Defender for Office 365 scales with the growing needs of my company well.
Senior Client Director and Advisory Service Leader at Crossfuze
 

Stability Issues

Sentiment score
8.4
IRONSCALES is praised for its stability, reliability, minimal downtime, and improved performance, enhancing operational workflows for users.
Sentiment score
7.7
Microsoft Defender for Office 365 provides 99.9% uptime with minor issues, ensuring reliable performance and seamless cloud integration.
I would rate the stability of Microsoft Defender for Office 365 as 10 over 10 because it's highly available, it works, and it does the job it is meant to do.
Cloud Solutions Architect at a tech services company with 201-500 employees
I have not experienced any downtime, crashes, or performance issues because of Defender.
Technology Associate at a financial services firm with 51-200 employees
The solution is stable, as we have been using it for the past two years.
Solution Consultant at BIM Group of Companies
 

Room For Improvement

IRONSCALES needs better Google Suite integration, intuitive UI, enhanced features, multilingual support, and improved email detection accuracy.
Users call for enhanced virus detection, cross-platform support, and pricing transparency in Microsoft Defender for Office 365.
If there were clickable drill downs on specific users or specific correspondence to relate them to certain types of mails, that would be beneficial.
Email Security Analyst at a computer software company with 51-200 employees
Having a more user-friendly UI would make it easier to identify features and options when using the tool.
SOC LEAD at a tech vendor with 10,001+ employees
Though this isn't problematic for our users, the content could be updated more frequently.
Systems Engineer at a tech services company with 10,001+ employees
The main area for improvement is simplifying the implementation and rollout process.
Infrastructure and Security Lead at Vedanta
Microsoft could improve by offering recommendations for domain spoofing attacks, especially scenarios where DNS records like SPF, DKIM, and DMARC are not properly published.
Solution Consultant at BIM Group of Companies
There is a different console for different things; I just want one consolidated console.
Senior Director, Security Architecture & Engineering at a leisure / travel company with 10,001+ employees
 

Setup Cost

IRONSCALES offers valuable email security with high pricing, involving annual licensing and fees, considered worthwhile for phishing prevention.
Microsoft Defender for Office 365 pricing is seen as flexible but potentially expensive, offering value in comprehensive security features.
While I don't specifically oversee the pricing details, I understand that IRONSCALES is in the range of similar solutions while offering better results.
Systems Engineer at a tech services company with 10,001+ employees
We've likely saved 30% of costs.
Designation Chief Consultant at Avtow
Money-wise, it is a part of the Office 365 suite, making it slightly more expensive compared to Trend Micro.
Infrastructure and Security Lead at Vedanta
Microsoft is quite affordable with a lot of features available for any size organization.
Solution Consultant at BIM Group of Companies
 

Valuable Features

IRONSCALES enhances email security with AI detection, Microsoft 365 integration, user-friendly features, and mobile app incident management.
Microsoft Defender for Office 365 enhances email security with anti-phishing, anti-malware, threat intelligence, and seamless integration for efficient management.
IRONSCALES has positively impacted my organization by making email security simple in terms of controlling mails, understanding where the threats are, and protecting the organization itself.
Email Security Analyst at a computer software company with 51-200 employees
The best features of IRONSCALES are that most alerts are validated through AI, which reduces the fatigue of alerts that need to be worked on by the team handling the alerts investigation part.
SOC LEAD at a tech vendor with 10,001+ employees
IRONSCALES excels at analyzing the intention, not just the content itself, but the sender's attempt to gain user attention.
Systems Engineer at a tech services company with 10,001+ employees
It ranks the threats and allows us to prioritize those hitting us the hardest, such as email threats.
Technology support manager at Alfred State College
It provides end-to-end visibility on email threats such as phishing, extending beyond Exchange Online Protection.
Solution Consultant at BIM Group of Companies
The value of the DLP feature is significant to us because we have internal data, sometimes sensitive, and the users may not always be aware of security and privacy, which might lead them to send out information mistakenly to external parties.
Chief Architect at a tech vendor with 1,001-5,000 employees
 

Categories and Ranking

IRONSCALES
Ranking in Email Security
14th
Ranking in Advanced Threat Protection (ATP)
16th
Ranking in Secure Email Gateway (SEG)
5th
Average Rating
9.2
Reviews Sentiment
6.9
Number of Reviews
16
Ranking in other categories
No ranking in other categories
Microsoft Defender for Offi...
Ranking in Email Security
1st
Ranking in Advanced Threat Protection (ATP)
2nd
Ranking in Secure Email Gateway (SEG)
1st
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
60
Ranking in other categories
Email Archiving (1st), Microsoft Security Suite (10th)
 

Mindshare comparison

As of January 2026, in the Email Security category, the mindshare of IRONSCALES is 1.8%, down from 2.1% compared to the previous year. The mindshare of Microsoft Defender for Office 365 is 9.6%, down from 13.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security Market Share Distribution
ProductMarket Share (%)
Microsoft Defender for Office 3659.6%
IRONSCALES1.8%
Other88.6%
Email Security
 

Featured Reviews

reviewer2770017 - PeerSpot reviewer
Email Security Analyst at a computer software company with 51-200 employees
Has improved threat analysis by providing clear email correspondence history and reporting tools
The best features IRONSCALES offers are the investigation tabs, headers, and correspondence history, which stand out the most for me. The investigation tabs are valuable for my work because reporting goes a long way in terms of playbooks and having a full investigation. The investigation tab knows exactly how to put the information in a way that makes it very easy for reports to get done fast. Security awareness training is a big part of IRONSCALES. The platform offers a broad spectrum in terms of what campaigns can be run for security awareness for users as well as reporting back on how users interact with their mails and understanding where the vulnerabilities lie. IRONSCALES has positively impacted my organization by making email security simple in terms of controlling mails, understanding where the threats are, and protecting the organization itself.
Emeka Ndulu - PeerSpot reviewer
Cloud Solutions Architect at a tech services company with 201-500 employees
Improves threat visibility and response while reducing manual tasks and training users against phishing
I appreciate the attack simulation feature whereby I get to train users and educate them on how to identify phishing emails and spam emails, as well as the anti-spam protection. It gives me visibility into my threat environment and threat landscape to ensure that I am one step ahead of any likelihood of threats within my environment. I get to detect it and respond, so the threat intelligence is very effective. Microsoft security solutions save my time. It saves money because once I protect my environment, I don't lose money. It has decreased my detection time and my time to respond.
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881,082 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Computer Software Company
18%
Manufacturing Company
8%
Construction Company
6%
Comms Service Provider
6%
Computer Software Company
14%
Financial Services Firm
8%
Manufacturing Company
8%
Comms Service Provider
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business7
Midsize Enterprise4
Large Enterprise4
By reviewers
Company SizeCount
Small Business23
Midsize Enterprise10
Large Enterprise31
 

Questions from the Community

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 lot of phishing emails that come through.
What is your experience regarding pricing and costs for IRONSCALES?
While I don't specifically oversee the pricing details, I understand that IRONSCALES is in the range of similar solutions while offering better results.
What needs improvement with IRONSCALES?
I would really prefer to drill down more on correspondence history. It provides detailed background information to actually understand what's going on. If there were clickable drill downs on specif...
What needs improvement with Microsoft Defender for Office 365?
The inbuilt analysis of false positives can be faster. It's not slow, but it can be faster.
What is your primary use case for Microsoft Defender for Office 365?
My use case for Microsoft Defender for Office 365 is for email protection, safe links, protection of links, documents, protecting my documents, and protecting attachments. I also use it to conduct ...
 

Also Known As

No data available
MS Defender for Office 365
 

Overview

 

Sample Customers

Allegheny Millwork, Ayrshire College, Nium, Orris, Paramount School District, Pres Les, PRT Staffing, Recovery Unplugged, Telit, WebHelp
Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Find out what your peers are saying about IRONSCALES vs. Microsoft Defender for Office 365 and other solutions. Updated: December 2025.
881,082 professionals have used our research since 2012.