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

Microsoft Exchange Online Protection (EOP) vs. Trend Micro InterScan Messaging Security

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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...

Mindshare comparison

As of March 2025, in the Email Security category, the mindshare of Microsoft Defender for Office 365 is 13.5%, down from 19.7% compared to the previous year. The mindshare of Microsoft Exchange Online Protection (EOP) is 7.1%, down from 9.7% compared to the previous year. The mindshare of Trend Micro InterScan Messaging Security is 0.6%, up from 0.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Email Security

Featured Reviews

Tolu Omolaja

Head of Department of Network Communications at Eko electricity

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.

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Nur Mohammad

Deputy Manager at B-Trac Technologies Ltd.

An effective email security solution that provides DLP, Safe Attachment, and Safe Links

If you want extensive email security, you need to purchase a Plan 2 license. Plan 1 and Plan 2 are the two plans for Microsoft Exchange Online Protection. Some customers hesitate to purchase this product because it adds some costs to them, which is necessary for them. It would be helpful for customers if Plan 1 features were included with EOP. However, they still need to purchase Plan 2 for advanced security features. One of our clients recently requested to compare Zimbra's features with Microsoft Exchange Online Protection. Zimbra is open source, while Microsoft Exchange Online Protection is not. When I compare both the products, many free features are available in Zimbra because it is open-source software. It makes no sense to request Microsoft Exchange Online Protection add all the features people get on open-source software like Zimbra. Hence, I would say whatever features Microsoft Exchange Online Protection has are enough. Microsoft has a dedicated research team that should research and add new techniques like phishing and spamming solutions to the product.

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Abdul Waris

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…

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Quotes from Members

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

Pros

"The most valuable aspect of Microsoft Defender for Office 365 is its ability to protect us from malware."

"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."

"The product is not resource-intensive."

"At the moment we are satisfied with this product. It's a stable, scalable, and resilient solution for us."

"Some of the valuable features on the email side are anti-phishing, anti-malware, and Safe Links."

"We use Microsoft Defender for its ability to integrate with existing business technologies, which is beneficial for protecting business areas."

"Defender enables us to secure all 365-related activity from a single place. It gives us visibility into everything happening in Outlook, protecting us against phishing and other email-based threats. Defender helps us detect any suspicious behaviors."

"Scalability-wise, I do not think there are any issues so far."

More Microsoft Defender for Office 365 pros

"It's all running in the backend, so it doesn't affect the app functionality."

"The most valuable feature is the ease of administration. Other solutions require complex administration, but Microsoft Exchange Online Protection is easier."

"The email policy configuration options in Microsoft EOP are satisfactory."

"It has a really nice web-based administration console."

"It is easy to configure, easy to use, easy to add exclusions, easy to track, and easy to add anything else if you want."

"In general, my company is happy with Microsoft support...My company hasn't faced any stability issues with the solution."

"It provides security to both on-premises and Azure infrastructures."

"Microsoft EOP's most valuable feature is a shared mailbox."

More Microsoft Exchange Online Protection (EOP) pros

"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."

"With Trend Micro email security gateway, we can deploy features like DLP and BEC."

Cons

"The changes to customer service, specifically the new model for support agreements, are not favorable."

"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."

"You should be able to deploy Defender for every subscription without the need to add servers."

"Microsoft Defender for Office 365 must improve the overall management style, including the GUI. It also needs to change the filters so that it is easy to whitelist and blacklist data."

"Microsoft Defender for Office 365 should be more proactive."

"Microsoft Defender for Office 365 should improve the troubleshooting tools. It's unclear whether the device is blocked at the firewall level or at the device itself. The granularity needed for troubleshooting is currently lacking. From my perspective, Microsoft should address this issue to benefit many users who likely share the same sentiment."

"Several simulation options are available within 365, and the phishing simulation could be better."

"They have moved features from one console to another. Things have been moved around in the interface and it takes me time to find where certain features are."

More Microsoft Defender for Office 365 cons

"The tool's classification for bulk email is cumbersome."

"Not all settings can be configured automatically and most still require manual configuration. However, there is an automation tool available that can be used to input all the configurations either as a script or a tool it would be helpful."

"Having orchestration features added to Microsoft Exchange Online Protection, particularly automation and remediation, would be quite useful."

"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."

"When the product is being updated, it changes some of the setups. The support team is also not good."

"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."

"The product could be more stable. Microsoft products could be more stable because sometimes, even though they are updating some things, we cannot find those updates."

"Online Protection has an issue in that it doesn't provide an option to stop impersonation."

More Microsoft Exchange Online Protection (EOP) cons

"The product's pricing could be more flexible."

"There is room for improvement in content filtration, expressions, file sharing, and policy configuration."

"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

"Compared to other brands, Microsoft Defender for Office 365's pricing is competitive."

"The product is very expensive."

"The pricing has become expensive."

"The license is expensive because the cost is based on the number of users."

"Microsoft Defender for Office 365 comes with Microsoft Windows. It is free with the operating system."

"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."

"It is much more expensive than using another solution because we have had to include some options and upgrade our license."

More Microsoft Defender for Office 365 pricing and cost advice

"Apart from the license fee for the solution, there are no additional costs."

"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 product is bundled with Microsoft 365."

"On a scale of one to ten, where one is cheap, and ten is very expensive, I rate the pricing a six. For licensing, we can make monthly or yearly payments. Right now, we pay 5 USD per month to secure a person's license."

"It's a high price."

"The solution is expensive but is backed by Microsoft's reputation."

"It is a low-price solution."

"The pricing for the solution depends on what you are trying to achieve with the use of the product, but I know that it is not a cheaply priced product. Yearly payments have to be made towards the licensing fees of the solution."

More Microsoft Exchange Online Protection (EOP) pricing and cost advice

"Trend Micro is an expensive solution."

"I rate Trend Micro InterScan Messaging Security’s pricing a seven out of ten."

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Top Industries

By visitors reading reviews

Computer Software Company

16%

Financial Services Firm

Manufacturing Company

Government

Computer Software Company

15%

Financial Services Firm

Government

Manufacturing Company

Computer Software Company

12%

Financial Services Firm

11%

Manufacturing Company

10%

Comms Service Provider

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?

I don't have detailed specifics on pricing, setup cost, or licensing.

What needs improvement with Microsoft Defender for Office 365?

I am generally satisfied with how it currently is. If I could improve anything, I would reduce the cost.

What do you like most about Microsoft Exchange Online Protection?

The initial setup was easy. The configuration process is very straightforward.

What needs improvement with Microsoft Exchange Online Protection?

Some of the searchability when looking for specifics in Exchange logs is tedious. Although eventually the information...

What is your primary use case for Microsoft Exchange Online Protection?

I use the tools to protect customers' emails, mostly utilizing Defender products to protect emails and links from Sha...

What do you like most about Trend Micro InterScan Messaging Security?

The technical support services are excellent.

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 cho...

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 de...

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Product Reports

Microsoft Defender for Office 365

Download Microsoft Defender for Office 365 product report

Microsoft Defender for Office 365 report

Microsoft Exchange Online Protection (EOP)

Download Microsoft Exchange Online Protection (EOP) product report

Microsoft Exchange Online Protection (EOP) report

Email Security

Download Trend Micro InterScan Messaging Security product report

Trend Micro InterScan Messaging Security report

Also Known As

MS Defender for Office 365

Microsoft EOP, MS Exchange Online Protection

InterScan Messaging Security

Overview

Microsoft Defender for Office 365 is a comprehensive security solution designed to protect organizations against advanced threats in their email, collaboration, and productivity environments. It combines the power of Microsoft's threat intelligence, machine learning, and behavioral analytics to provide real-time protection against phishing, malware, ransomware, and other malicious attacks.

With Microsoft Defender for Office 365, organizations can safeguard their email communication by detecting and blocking malicious links, attachments, and unsafe email content. It employs advanced anti-phishing capabilities to identify and prevent sophisticated phishing attacks that attempt to steal sensitive information or compromise user credentials.

This solution also offers robust protection against malware and ransomware. It leverages machine learning algorithms to analyze email attachments and URLs in real-time, identifying and blocking malicious content before it reaches users' inboxes. Additionally, it provides advanced threat-hunting capabilities, allowing security teams to proactively investigate and respond to potential threats.

Microsoft Defender for Office 365 goes beyond email protection and extends its security features to other collaboration tools like SharePoint, OneDrive, and Teams. It scans files and documents stored in these platforms, ensuring that they are free from malware and other malicious content. It also provides visibility into user activities, helping organizations detect and mitigate insider threats.

Furthermore, this solution offers rich reporting and analytics capabilities, providing organizations with insights into their security posture and threat landscape. It enables security administrators to monitor and manage security incidents, track trends, and take proactive measures to enhance their overall security posture.

Microsoft

Microsoft Exchange Online Protection (EOP) is a comprehensive email filtering and security service designed to protect organizations from spam, malware, and other email-based threats. It provides advanced threat protection, anti-malware and anti-spam filtering, and data loss prevention capabilities.

With EOP, organizations can ensure the security and integrity of their email communications. It uses multiple layers of filtering and scanning to detect and block malicious content, including phishing attempts, viruses, and ransomware. EOP also leverages machine learning and artificial intelligence to continuously improve its threat detection capabilities.

In addition to its robust security features, EOP offers advanced anti-spam filtering to reduce unwanted and unsolicited emails. It uses a combination of reputation-based filtering, content filtering, and sender authentication techniques to identify and block spam messages.

EOP also includes data loss prevention (DLP) capabilities to prevent sensitive information from being leaked or shared inappropriately. It allows organizations to define policies to detect and prevent the transmission of sensitive data, such as credit card numbers or social security numbers, via email.

Furthermore, EOP integrates seamlessly with Microsoft Exchange Online and other Office 365 services, providing a unified and integrated email security solution. It can be easily managed through the Exchange admin center, allowing administrators to configure and monitor security settings, review reports, and manage quarantined emails.

Microsoft

Trend MicroTM InterScan™ Messaging Security provides the most comprehensive protection against both traditional and targeted attacks. Using the correlated intelligence from Trend Micro™ Smart Protection Network™ and optional sandbox execution analysis, it blocks spam, phishing, and advanced persistent threats (APTs). The included hybrid SaaS deployment option combines a powerful gateway virtual appliance with a SaaS pre- lter that stops majority of threats and spam in the cloud—closer to their source. This hybrid solution delivers the best of both worlds: the privacy and control of an on-premises appliance with an in-the-cloud pre- lter for resource ef ciency and proactive protection.

Trend Micro

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.

Information Not Available

Copa Airlines, Air21, BookMyShow, Bulgarian American Credit Bank, Canadian Museum of History, CIBIL, Community National Bank, Dar Al-Handasah

Microsoft Exchange Online Protection (EOP) vs. Trend Micro InterScan Messaging Security