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Microsoft Exchange Online Protection (EOP) vs Trend Micro InterScan Messaging Security [EOL] comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jun 3, 2026

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 Exchange Online P...
Average Rating
8.2
Reviews Sentiment
6.6
Number of Reviews
42
Ranking in other categories
Email Security (9th), Anti-Malware Tools (14th)
Trend Micro InterScan Messa...
Average Rating
7.0
Reviews Sentiment
7.1
Number of Reviews
3
Ranking in other categories
No ranking in other categories
 

Featured Reviews

NancyHartman - PeerSpot reviewer
Business Process Manager/ Educational Technologist at a educational organization with 1,001-5,000 employees
Layered email security has protected sensitive research and still flags phishing in real time
The valuable features of Microsoft Exchange Online Protection (EOP) include providing an additional layer of protection, as it builds on the basic Exchange level of security that allows us to get our work done. Another feature I appreciate is the ability to question things, as our Exchange server allows us to identify in real-time if an email is a phishing email or spam email. It really helps us identify risks, especially through our external exchanges via email or through our cloud-based platforms. Our Exchange system blocks any embedded AI from all our applications and products, so we cannot use embedded AI in our daily work from our official laptops because we have secure information. The system is quite locked down.
Abdul  Waris - PeerSpot reviewer
Tech Operations at Martin Dow Limited
Deploy features like DLP and BEC for enhanced security
Multiple clients are using email security. We provide solutions based on what they need, and we configure them accordingly as per the requirement With Trend Micro email security gateway, we can deploy features like DLP and BEC. It includes Office 365 protection and sandboxing. This provides…

Quotes from Members

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

Pros

"We can migrate seamlessly without any disruptions to our operations."
"The most valuable feature of Microsoft Exchange Online Protection is the accidental release of information protection capabilities, and additionally, the solution is easy to use."
"Microsoft Exchange Online Protection (EOP) is used essentially for email filtering, acting as an anti-spam and security product for email."
"The initial setup of Microsoft Exchange Online Protection was easy."
"It is scalable."
"The solution uses artificial intelligence and machine learning, so you don't need train it to detect something. The detection and response times are short. It's an excellent product."
"Microsoft Exchange Online Protection has features like DLP (data loss protection), Safe Attachment, and Safe Links."
"The email policy configuration options in Microsoft EOP are satisfactory."
"The technical support services are excellent."
"With Trend Micro email security gateway, we can deploy features like DLP and BEC."
"The solution provides protection with its Email Track Records and Machine Manual features."
 

Cons

"The security compliance features need to be improved. Sometimes, a client's mailbox becomes full because of retained information and not because of mail. I would like to see improvement in block rules as well."
"Having orchestration features added to Microsoft Exchange Online Protection, particularly automation and remediation, would be quite useful."
"They should specify the difference between Defender for Office 365 and Exchange Online Protection."
"We would like the solution to have more in-built intelligence in the way that it reviews potential security risks, rather than our team constantly having to update the policies."
"The biggest issue that I experience is that Microsoft keeps moving things around, and it's very inconsistent as to where you find the information when you're trying to work on different pieces."
"When you're using a Microsoft product solution, you can scale it, but if you're not, there are limitations."
"The tool is not 100% stable."
"The reporting needs a little bit of improvement."
"The product's pricing could be more flexible."
"The solution's pricing could be improved."
"There is room for improvement in content filtration, expressions, file sharing, and policy configuration."
 

Pricing and Cost Advice

"The solution's pricing is subscription-based rather than a yearly licensing cost. Pricing is based on the size of the environment and company and can be expensive."
"The tool's pricing is excellent."
"The solution falls on the higher or more expensive side of the spectrum."
"The price of Microsoft Exchange Online Protection is reasonable."
"The pricing of the solution is reasonable."
"The solution is expensive but is backed by Microsoft's reputation."
"Microsoft Exchange Online Protection's pricing is a little bit more because its price has recently increased."
"The product is bundled with Microsoft 365."
"I rate Trend Micro InterScan Messaging Security’s pricing a seven out of ten."
"Trend Micro is an expensive solution."
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912,930 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Financial Services Firm
11%
Manufacturing Company
9%
Comms Service Provider
8%
Computer Software Company
8%
Performing Arts
16%
Manufacturing Company
10%
Construction Company
9%
Financial Services Firm
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business23
Midsize Enterprise6
Large Enterprise13
No data available
 

Questions from the Community

What needs improvement with Microsoft Exchange Online Protection?
From an end-user point of view, I am quite happy with Microsoft Exchange Online Protection (EOP) because my favorite feature is the ease with which I can identify if an email is a phishing email or...
What is your primary use case for Microsoft Exchange Online Protection?
Microsoft Exchange Online Protection (EOP) serves as the main use case for my company because, as a research company, we require a very high level of security. We use multiple authentication method...
What advice do you have for others considering Microsoft Exchange Online Protection?
My experience with Microsoft Exchange Online Protection (EOP) is from an end-user perspective, and I do not have admin management experience. I am not familiar with the Advanced Threat Protection f...
What is your experience regarding pricing and costs for Trend Micro InterScan Messaging Security?
The price is a bit high because the market is highly competitive. Multiple platforms are available, so we have to choose based on comparison.
What needs improvement with Trend Micro InterScan Messaging Security?
There is room for improvement in content filtration, expressions, file sharing, and policy configuration. We could decrease the price in email security gateway and cloud security services.
What is your primary use case for Trend Micro InterScan Messaging Security?
Multiple clients are using email security. We provide solutions based on what they need, and we configure them accordingly as per the requirement.
 

Also Known As

Microsoft EOP, MS Exchange Online Protection
InterScan Messaging Security
 

Overview

 

Sample Customers

Information Not Available
Copa Airlines, Air21, BookMyShow, Bulgarian American Credit Bank, Canadian Museum of History, CIBIL, Community National Bank, Dar Al-Handasah
Find out what your peers are saying about Proofpoint, Microsoft, Check Point Software Technologies and others in Email Security. Updated: August 2026.
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