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Microsoft Exchange Online Protection (EOP) vs Trend Micro Deep Discovery Email Inspector comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Dec 3, 2024

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)
Microsoft Exchange Online P...
Ranking in Email Security
5th
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
38
Ranking in other categories
Anti-Malware Tools (7th)
Trend Micro Deep Discovery ...
Ranking in Email Security
27th
Average Rating
8.0
Reviews Sentiment
7.0
Number of Reviews
7
Ranking in other categories
No ranking in other categories
 

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 Microsoft Exchange Online Protection (EOP) is 6.7%, down from 9.1% compared to the previous year. The mindshare of Trend Micro Deep Discovery Email Inspector is 0.4%, up from 0.1% 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.
Nur Mohammad - PeerSpot reviewer
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.
Rejwana Rahman - PeerSpot reviewer
Delivers strong security with potential for improved support efficiency
I sell solutions for security support. We offer an email gateway and serve bank clients I find Trend Micro to be a good solution for security purposes. In comparison to other software, SoftForce offers a very good solution. Trend Micro's technical support has room for improvement. More efficient…

Quotes from Members

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

Pros

"The solution is very easy to use. All you have to do is to assign the license to the end-user and it's done. The customer will only have the feature activated, and the solution will monitor the emails to determine if they are a threat or not."
"Microsoft Defender for Office 365 has improved my organization's security. It makes it easier to manage the infrastructure without the help of third-party applications."
"The email protection is excellent, especially in terms of anti-phishing policies."
"The product is not resource-intensive."
"The most valuable feature of Microsoft Defender for Office 365 is data backups that we can provide through ticket requests."
"Microsoft Defender for Office 365's most valuable feature is its performance."
"The most valuable feature of Microsoft Defender for Office 365 is the ease of use."
"It also gives me good visibility because, with Defender, I'm using a Microsoft product to defend Microsoft products. The integration was really seamless and I have wide visibility because it picks up almost everything. Literally, I can see almost every activity that happens, from the e-mail to the workstation itself."
"The product's most valuable feature is third-party integrations."
"Microsoft Exchange Online Protection (EOP) is the best email solution with more features and robust security, making it ideal for corporate use."
"It is scalable."
"I like the product's ZAP feature."
"It is easy to configure, easy to use, easy to add exclusions, easy to track, and easy to add anything else if you want."
"Online Protection's most valuable feature is its admin interface."
"The product protects against malware."
"The email policy configuration options in Microsoft EOP are satisfactory."
"It can effectively monitor outbound and inbound devices."
"I highly recommend Trend Micro Deep Discovery Email Inspector due to its security and scalability features."
"The most valuable feature of Trend Micro Deep Discovery Email Inspector is the simple analysis of phishing emails."
"I find Trend Micro to be a good solution for security purposes."
"I like that it is very user-friendly and easy to install."
"The solution's most valuable features include visibility into the network and fast sandboxing technology for alerts, though response time can vary."
"Trend Micro is a very good product."
"I would rate the solution's stability at ten out of ten."
 

Cons

"The custom alerts have to improve a lot."
"Several simulation options are available within 365, and the phishing simulation could be better."
"One area for improvement is support, in terms of being able to reach them and, especially, technical support for configuration."
"The only thing they should improve is the licensing model. They should stop changing it. A year ago, the five features I mentioned were included in one product. Now, three of them are bundled into one product, and you have to pay extra for the other two. I don't mind paying extra, but I don't want them to change it every year or every six months. I need to know what I'm looking at and not worry about it next year."
"Configuration at the mid-level could be improved for the support team."
"Microsoft should provide more documentation for users so they can self-educate. I would like to see more documentation for advanced security features."
"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."
"The phishing and spam filters could use some improvement."
"The licensing can be on the expensive side, especially in the cloud space."
"The solution lacks to elaborate on its spam policies."
"Performance and speed should continue to be improved."
"Microsoft has some training portals, but more could be developed."
"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."
"Some features, like encryption, are not available."
"We have experienced issues while migrating from on-prem to the cloud. The tool needs to improve its stability."
"Online Protection has an issue in that it doesn't provide an option to stop impersonation."
"Trend Micro's technical support has room for improvement. More efficient support should be provided, especially for standard support."
"The product's feature for message processing and blocking devices for bulk emails needs improvement."
"The tool needs to incorporate faster response times for issue detection, more detailed reports, and better compatibility with older operating systems (e.g., Windows 7, 8, Server 2012)."
"It could be more user-friendly, easier to install, and lighter on the network. I would say that for all products because you do not need technical expertise to take care of it. When you have a user-friendly solution, it makes it easier for the vendors or companies like us. We do not have to go to the client's site to attend to issues all the time. Because it is user-friendly, they can take care of it after some training."
"I would like to be able to send emails to a specific sandbox. This is a feature I would like to see added to the next release."
"Trend Micro Deep Discovery Email Inspector could improve by making it easier to use. Microsoft solutions are easier to use."
"Trend Micro's technical support has room for improvement."
"The dashboard could be improved to match the quality of Check Point Harmony's dashboard."
 

Pricing and Cost Advice

"The product is very expensive."
"Microsoft Defender for Office 365 comes with Microsoft Windows. It is free with the operating system."
"It is much more expensive than using another solution because we have had to include some options and upgrade our license."
"While Microsoft Defender for Office 365 necessitates pricier E3 or E5 subscriptions, the extensive functionality offered by these licenses across various Microsoft products justifies the investment."
"It's a user-base subscription."
"For large enterprise organizations, they can definitely afford it, but for small and medium organizations, they might struggle to cover the expenses."
"Microsoft Defender for Office 365 is an add-on to the Office license. Many customers are purchasing this solution."
"Compared to other brands, Microsoft Defender for Office 365's pricing is competitive."
"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."
"The solution should reduce the cost."
"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 expensive."
"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."
"The product's pricing is competitive for the US market."
"The solution is priced high and could be less expensive compared to other solutions."
"The price could be lower."
"We pay for an annual subscription for this email security solution."
"It's an expensive solution, and you may not see a return on investment in a short period of time. However, you will see a return over a long period of time."
"The price of Trend Micro Deep Discovery Email Inspector is less expensive than Microsoft solutions."
"The solution's pricing is high, and I would rate it an eight out of ten."
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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
15%
Financial Services Firm
9%
Government
9%
Manufacturing Company
7%
Computer Software Company
15%
Financial Services Firm
13%
Media Company
8%
Security Firm
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

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 Microsoft Exchange Online Protection?
The initial setup was easy. The configuration process is very straightforward.
What needs improvement with Microsoft Exchange Online Protection?
I would like to improve the setting of rules in Microsoft Exchange Online Protection (EOP) as it is currently working...
What is your primary use case for Microsoft Exchange Online Protection?
I am using Microsoft Exchange Online Protection (EOP) ( /products/microsoft-exchange-online-protection-eop-reviews ) ...
What is your experience regarding pricing and costs for Trend Micro Deep Discovery Email Inspector?
The licensing cost is reasonable, and while additional features may require extra licensing fees, the overall pricing...
What needs improvement with Trend Micro Deep Discovery Email Inspector?
The dashboard could be improved to match the quality of Check Point Harmony ( /products/avaya-workforce-engagement-re...
 

Also Known As

MS Defender for Office 365
Microsoft EOP, MS Exchange Online Protection
Deep Discovery Email Inspector
 

Overview

 

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Information Not Available
Bank Saint Petersburg, CEITEC S.A., Dar Al-Handasah, Mitsubishi Electric Information Systems, Motilal Oswal Financial Services Ltd, OKWAVE, Oman Arab Bank, VakifBank
Find out what your peers are saying about Microsoft Exchange Online Protection (EOP) vs. Trend Micro Deep Discovery Email Inspector and other solutions. Updated: April 2025.
851,604 professionals have used our research since 2012.