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AppRiver Email Security vs Trend Micro Email Security 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...
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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) (2nd), Microsoft Security Suite (10th), Secure Email Gateway (SEG) (1st)
AppRiver Email Security
Ranking in Email Security
23rd
Average Rating
9.0
Reviews Sentiment
6.6
Number of Reviews
2
Ranking in other categories
No ranking in other categories
Trend Micro Email Security
Ranking in Email Security
8th
Average Rating
8.0
Reviews Sentiment
7.1
Number of Reviews
28
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2025, in the Email Security category, the mindshare of Microsoft Defender for Office 365 is 12.6%, down from 17.6% compared to the previous year. The mindshare of AppRiver Email Security is 0.9%, down from 1.1% compared to the previous year. The mindshare of Trend Micro Email Security is 2.6%, down from 3.3% 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.
John Zupancic - PeerSpot reviewer
Pricing that is competitive, excellent technical support, and email security
They do a better job of distinguishing between what's real and what's not than most of the other solutions we've tried. They are very easy to use. We don't have as many problems with email security. They have some areas that could be improved. For example, we also use Zix email Encryption for email encryption, which was clunky and could be improved, but the email security itself has been excellent.
Nadeem Syed - PeerSpot reviewer
Offers comprehensive security, easy integration, and good support
It integrated easily. About 99% of the time, we do not face any challenges in integrating any product of Trend Micro with the existing network. It is usually compatible with all kinds of networks. They have recently added AI to all Trend Micro products. It makes life a little bit easier by catching viruses, providing solutions, and helping out whenever you are stuck somewhere. It is one of the very good features they have right now. For example, one of our clients experienced a network attack and became confused about resolving the issues. The AI was helpful by suggesting initial steps to solve the problem.

Quotes from Members

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

Pros

"Overall, I would rate Microsoft Defender for Office 365 at a ten."
"Microsoft Defender for Office 365 facilitates efficient management and updates through the cloud. We do not have to worry about incompatibilities. It just works."
"Microsoft Defender for Office 365 is a stable solution."
"The initial setup was easy."
"It also gives the vulnerability status according to the versions you have selected. Let's say you have Google Chrome. It mentions the versions it has, and it updates. Within two hours of an update, it is reflected in the dashboard. That's really nice to have."
"At the moment we are satisfied with this product. It's a stable, scalable, and resilient solution for us."
"It’s easy to handle integrations, and we don't need a lot of people in our IT team."
"Since we have started using the solution, there have been fewer compromises."
"It's easy to use and user-friendly. Users can also easily release spam emails."
"They are very easy to use."
"It is mostly stable."
"The solution's initial setup process was easy since it was deployed on the cloud."
"Trend Vision One has helped to reduce my time to detect and respond to threats; it was our gateway for almost 12 years."
"Trend Micro Email Security’s most valuable feature is spam filtering."
"The most valuable features of the solution are spam protection and email continuity."
"Trend Micro has inter-domain security features that solutions from other vendors like Forcepoint lack."
"The best features are that it is very convenient to configure new rules onto it and it gives very good insight on what has entered my system and what the email security solution has taken action upon."
"The most valuable feature of Trend Micro Email Security is effective phishing prevention."
 

Cons

"The GUI is sometimes slow to fetch the device report and could be improved."
"In the areas of improvement for Microsoft Defender for Office 365, the console is the biggest challenge for me."
"Microsoft security solutions work as expected. They are constantly updating the solutions to make them better. At the same time, the changes can impact a customer's environment, and we need to adjust settings. Sometimes we aren't aware of the changes, and nothing is pushed from the backend automatically."
"The certification training for Defender for 365 needs to be deeper and incorporate Sentinel. I took all the security courses except one, and Sentinel isn't included."
"About eight months ago, we started to measure the quantity of phishing and spam that we have been receiving, and it has been increasing a lot. That means that protection for our email is not as good as we were expecting."
"The changes to customer service, specifically the new model for support agreements, are not favorable."
"Configuring the default strategies and policies in Microsoft Defender for Cloud Apps generates a lot of noise and false positives."
"Microsoft wants its well-paying customers to finish testing some of its half-baked products, find bugs, and report bugs back to Microsoft's team, which is a little frustrating for those who have to manage it and roll it up to thousands of people across the organization."
"It needs to make sure that the application is up to date with new attacks. They should also send us the demo or introductions for their new incoming features."
"Email security checks contain a small number of false positives."
"The solution's interface, which we get from an admin perspective, sometimes gets confusing."
"There is room for improvement in mobile device management. The company also needs to work on pricing because it is quite costly compared to other products."
"I would like to see more integration of Trend Micro Email Security with different platforms."
"In our company, we found out that the solution wasn't well-tested by Trend Micro, resulting in a performance and bandwidth problem."
"The capacity handling and the scalability of the solution need to be improved since I feel Trend Micro lacks in such areas."
"They need to adjust the spam filtering and make it stronger."
"In terms of improvement, reducing false positives would improve the system."
"The only negative thing about Trend Micro Email Security is its price. It could be less expensive."
 

Pricing and Cost Advice

"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."
"From the pricing point of view, like any other product in the market, there is scope for negotiation."
"I was working in the government and it was too expensive for us to use our Microsoft products."
"It is much more expensive than using another solution because we have had to include some options and upgrade our license."
"For licensing, it's usually a yearly package for customers who are subscribed to Office 365, but they can also pay on a monthly basis."
"For large enterprise organizations, they can definitely afford it, but for small and medium organizations, they might struggle to cover the expenses."
"I know that the product is incredibly expensive."
"The product is very expensive."
"They're fairly inexpensive, but they're right in the ballpark of most of the other online products like that."
"I can rate it five out of ten because there are different platforms that also offer the same services for lower prices. But AppRiver is more flexible."
"Price-wise, it is a cheap solution. I rate the solution's pricing a one on a scale of one to ten, where ten is expensive. Annual payments are made for the licensing."
"The solution is inexpensive so we recommend it to small to mid-sized businesses."
"The cost is about $6,000 for 300 users for one year."
"The solution's pricing is very optimum, given its quality, features, and stability."
"The tool must improve its pricing."
"The price of Trend Micro Email Security is annual. There are no additional fees."
"It's a VPN solution. Trend Micro is reasonably priced."
"The price of Trend Micro Email Security is more than Sophos' similar solution."
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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
14%
Manufacturing Company
8%
Retailer
8%
Non Profit
6%
Computer Software Company
16%
Financial Services Firm
10%
Insurance Company
7%
Manufacturing Company
6%
 

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?
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 AppRiver Email Security?
It's easy to use and user-friendly. Users can also easily release spam emails.
What is your experience regarding pricing and costs for AppRiver Email Security?
I can rate it five out of ten because there are different platforms that also offer the same services for lower price...
What needs improvement with AppRiver Email Security?
It needs to make sure that the application is up to date with new attacks. They should also send us the demo or intro...
What do you like most about Trend Micro Email Security?
The tool provides a strong defense against attacks. It is also easy to use. Trend Micro Email Security's integration ...
What needs improvement with Trend Micro Email Security?
There is room for improvement in mobile device management. The company also needs to work on pricing because it is qu...
What advice do you have for others considering Trend Micro Email Security?
I would definitely recommend it. Trend Micro is better than any of its competitors. I would rate it a nine out of ten...
 

Also Known As

MS Defender for Office 365
AppRiver Advanced Email Security
No data available
 

Overview

 

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
IHMC
MedImpact Healthcare Systems, Air21, Azra Solutions, CBOSS, De Montfort University, Depaeuw, DHR Health, Fukui University Hospital
Find out what your peers are saying about AppRiver Email Security vs. Trend Micro Email Security and other solutions. Updated: June 2025.
858,469 professionals have used our research since 2012.