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Microsoft Defender for Office 365 vs Trend Micro Deep Discovery Email Inspector comparison

Microsoft and Trend Micro are both solutions in the Email Security category. Microsoft is ranked #1 with an average rating of 8.5, while Trend Micro is ranked #28 with an average rating of 8.5. Microsoft holds a 12.9% mindshare in Email Security, compared to Trend Micro’s 0.4% mindshare. Additionally, 96% of Microsoft users are willing to recommend the solution, compared to 100% of Trend Micro users who would recommend it.
Microsoft Defender for Offi...
Read 49 Microsoft Defender for Office 365 reviews
  • 13,537 Views
  • 10,561 Comparison Views
96% willing to recommend
Trend Micro Deep Discovery ...
Read 7 Trend Micro Deep Discovery Email Inspector reviews
  • 664 Views
  • 131 Comparison Views
100% willing to recommend
 

Comparison Buyer's Guide

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Executive SummaryUpdated on Dec 3, 2024

Trend Micro Deep Discovery Email Inspector and Microsoft Defender for Office 365 are competing products, both providing advanced threat protection for email security. Microsoft Defender for Office 365 is perceived as having the upper hand due to its extensive features and integration within the Microsoft ecosystem, making it a preferred solution for enhanced security.

Features: Trend Micro Deep Discovery Email Inspector offers features such as simple analysis of phishing emails, a user-friendly UI for email detection, and visibility into the network with fast sandboxing technology. On the other hand, Microsoft Defender for Office 365 provides features like URL Threat Protection, anti-malware capabilities, data loss prevention policies, and Threat Explorer for real-time security attack analysis.

Room for Improvement: Trend Micro could enhance its response time for alerts, improve sandboxing efficiencies, and refine user interface elements for more streamlined operation. Microsoft Defender for Office 365 may benefit from simplifying threat configuration processes, enhancing information protection for different cloud services, and improving response times for phishing attacks.

Ease of Deployment and Customer Service: Trend Micro offers flexible deployment options tailored to various infrastructures and is noted for its responsive support services. Microsoft Defender enjoys smooth integration within Microsoft environments, simplifying deployment but may not offer the same personalized support level that Trend Micro provides, despite its broader reach.

Pricing and ROI: Trend Micro Deep Discovery Email Inspector is recognized for a more favorable setup cost structure, leading to a better initial ROI. However, Microsoft Defender for Office 365 might entail a higher upfront investment but offers a comprehensive security package that can justify the expense over time through reduced risk exposure and increased productivity, balancing initial costs against the capabilities offered.

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To learn more, read our detailed Microsoft Defender for Office 365 vs. Trend Micro Deep Discovery Email Inspector Report (Updated: April 2025).
Buyer's Guide
Microsoft Defender for Office 365 vs. Trend Micro Deep Discovery Email Inspector
April 2025
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Helped 850,028 peers since 2012

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...
Ranking in Email Security
1st
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
49
Ranking in other categories
Advanced Threat Protection (ATP) (1st), Microsoft Security Suite (11th)
Trend Micro Deep Discovery ...
Ranking in Email Security
28th
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 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.
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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…
Read full review

Quotes from Members

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

Pros

"The email protection is excellent, especially in terms of anti-phishing policies."
"I like its investigation capabilities, as that is what is most important to me. It is fairly simple with a user-friendly interface."
"Does a thorough job of examining email and URLs for malicious content."
"One of the best features of the tool is its capability to aggregate insights from different workloads, basically from the Office 365 and endpoints part."
"Defender helps us prioritize threats across our organization."
"Microsoft Defender for Office 365 is a stable solution."
"There are several features that I consider valuable."
"The technical support is good and quick to resolve issues."
More Microsoft Defender for Office 365 pros
"Trend Micro is a very good product."
"I would rate the solution's stability at ten out of ten."
"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."
"It can effectively monitor outbound and inbound devices."
"I like that it is very user-friendly and easy to install."
"I highly recommend Trend Micro Deep Discovery Email Inspector due to its security and scalability features."
"The solution's most valuable features include visibility into the network and fast sandboxing technology for alerts, though response time can vary."
 

Cons

"Microsoft Defender for Office 365 should be more proactive."
"Sometimes, phishing emails manage to pass through the filter, so the system needs to enhance its phishing email detection capabilities."
"Microsoft Defender for Office 365 could improve by giving customers information on techniques to prevent threats. For example, information about best practices on how to protect their own devices against hackers and scammers, such as educational information or training. This would help others have a better understanding of cyber security. Additionally, there can be more security features added."
"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."
"The visibility for the weaknesses in the system and unauthorized access can be improved."
"We need to be able to whitelist data at the backend."
"In some situations, it has not been able to pick impersonated emails having no attachments. Technical support definitely has a scope for improvement."
"The pre-sales cost calculations could be more transparent."
More Microsoft Defender for Office 365 cons
"The product's feature for message processing and blocking devices for bulk emails needs improvement."
"Trend Micro's technical support has room for improvement."
"Trend Micro's technical support has room for improvement. More efficient support should be provided, especially for standard support."
"The dashboard could be improved to match the quality of Check Point Harmony's dashboard."
"Trend Micro Deep Discovery Email Inspector could improve by making it easier to use. Microsoft solutions are easier to use."
"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."
"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."
 

Pricing and Cost Advice

"It's a user-base subscription."
"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 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."
"From the pricing point of view, like any other product in the market, there is scope for negotiation."
"I know that the product is incredibly expensive."
"The product is very expensive."
"The product is expensive."
More Microsoft Defender for Office 365 pricing and cost advice
"We pay for an annual subscription for this email security solution."
"The solution's pricing is high, and I would rate it an eight out of ten."
"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."
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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
11%
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 various email campaigns, pinpointing where they emanate from, and identifying the indi...
See all answers
What is your experience regarding pricing and costs for Microsoft Defender for Office 365?
Money-wise, it is a part of the Office 365 ( /products/office-365-reviews ) suite, making it slightly more expensive compared to Trend Micro. Although Defender is free, you have to pay separately f...
See all answers
What needs improvement with Microsoft Defender for Office 365?
The main area for improvement is simplifying the implementation and rollout process. There are many conditions to be met, making it challenging to ensure every system is protected. Troubleshooting ...
See all answers
What do you like most about Trend Micro Deep Discovery Email Inspector?
It can effectively monitor outbound and inbound devices.
See all answers
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 is comparable to other equal products. I would rate the pricing as nine out of ...
See all answers
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-reviews )'s dashboard. There is also room for improvement in introducing AI featur...
See all answers
 

Comparisons

Proofpoint Email Protection vs Microsoft Defender for Office 365 Logo
Proofpoint Email Protection vs Microsoft Defender for Office 365
Compared 13% of the time
Check Point Harmony Email & Collaboration vs Microsoft Defender for Office 365 Logo
Check Point Harmony Email & Collaboration vs Microsoft Defender for Office 365
Compared 7% of the time
Mimecast Email Security vs Microsoft Defender for Office 365 Logo
Mimecast Email Security vs Microsoft Defender for Office 365
Compared 5% of the time
Abnormal Security vs Microsoft Defender for Office 365 Logo
Abnormal Security vs Microsoft Defender for Office 365
Compared 5% of the time
Hornetsecurity 365 Total Protection vs Microsoft Defender for Office 365 Logo
Hornetsecurity 365 Total Protection vs Microsoft Defender for Office 365
Compared 5% of the time
More Microsoft Defender for Office 365 Competitors
Trend Micro InterScan Messaging Security vs Trend Micro Deep Discovery Email Inspector Logo
Trend Micro InterScan Messaging Security vs Trend Micro Deep Discovery Email Inspector
Compared 79% of the time
Microsoft Exchange Online Protection (EOP) vs Trend Micro Deep Discovery Email Inspector Logo
Microsoft Exchange Online Protection (EOP) vs Trend Micro Deep Discovery Email Inspector
Compared 21% of the time
More Trend Micro Deep Discovery Email Inspector Competitors
 

Product Reports

Buyer's Guide
Microsoft Defender for Office 365
April 2025
Microsoft Defender for Office 365 reportDownload Microsoft Defender for Office 365 product report
Buyer's Guide
Email Security
April 2025
Trend Micro Deep Discovery Email Inspector reportDownload Trend Micro Deep Discovery Email Inspector product report
 

Also Known As

MS Defender for Office 365
Deep Discovery Email Inspector
 

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

Stop spear phishing attacks and targeted ransomware

Trend Micro
 

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Bank Saint Petersburg, CEITEC S.A., Dar Al-Handasah, Mitsubishi Electric Information Systems, Motilal Oswal Financial Services Ltd, OKWAVE, Oman Arab Bank, VakifBank
Buyer's Guide
Microsoft Defender for Office 365 vs. Trend Micro Deep Discovery Email Inspector
April 2025
Free Report: Microsoft Defender for Office 365 vs. Trend Micro Deep Discovery Email Inspector
Find out what your peers are saying about Microsoft Defender for Office 365 vs. Trend Micro Deep Discovery Email Inspector and other solutions. Updated: April 2025.
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