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AppRiver Email Security vs MetaDefender Email Gateway Security comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Oct 6, 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

AppRiver Email Security
Ranking in Email Security
37th
Average Rating
9.0
Reviews Sentiment
6.6
Number of Reviews
2
Ranking in other categories
No ranking in other categories
MetaDefender Email Gateway ...
Ranking in Email Security
32nd
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
3
Ranking in other categories
Secure Email Gateway (SEG) (12th)
 

Mindshare comparison

As of November 2026, in the Email Security category, the mindshare of AppRiver Email Security is 0.7%, down from 0.8% compared to the previous year. The mindshare of MetaDefender Email Gateway Security is 1.2%, up from 0.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security Mindshare Distribution
ProductMindshare (%)
MetaDefender Email Gateway Security1.2%
AppRiver Email Security0.7%
Other98.1%
Email Security
 

Featured Reviews

John Zupancic - PeerSpot reviewer
Vice President / Branch Manager / Senior Technician at Aperion Information Technologies, Inc.
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.
RM
Senior Information Systems Engineer at Liberty Pumps, Inc.
Helpful support, and useful dashboards
They offer a feature called SmartLink neutralization. I have tried it before. It seemed to work most of the time; however, I had a few users for whom it just wouldn't work. Whenever they click on a link, it stays on the MetaDefender page, saying that it's scanning it and never moves forward. I haven't tried it in a while since then. Since I can't turn it off on a per-user basis, I had to turn it off globally. I have certain exceptions for not doing the sanitization, and how to set those up is not intuitive. It would be useful if there were a better way of doing that. Using digital certificates is hard. It would be better if it used Windows Servers' built-in certificate management.

Quotes from Members

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

Pros

"They are very easy to use."
"It's easy to use and user-friendly. Users can also easily release spam emails."
"They do a better job of distinguishing between what's real and what's not than most of the other solutions we've tried."
"The most valuable feature is called summary reconstruction which is used to deliver encrypted files to users."
"The sanitization is very good."
"The most valuable feature of MetaDefender Email Security is the CDR. Customers purchase this solution specifically for data communication, as the other features can be obtained through other technologies that most customers already possess. Therefore, data communication serves as the foundation for the platform."
 

Cons

"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."
"Technical support is no longer as good as it once was."
"The DLP should be upgraded and has room for improvement."
"Although the number of AV engines is good, it could be better."
"They offer a feature called SmartLink neutralization. I have tried it before. It seemed to work most of the time; however, I had a few users for whom it just wouldn't work. Whenever they click on a link, it stays on the MetaDefender page, saying that it's scanning it and never moves forward."
 

Pricing and Cost Advice

"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."
"According to our customers, the price of MetaDefender is high and it continues to increase by almost 15 percent each year."
report
Use our free recommendation engine to learn which Email Security solutions are best for your needs.
921,523 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Comms Service Provider
13%
Manufacturing Company
11%
Outsourcing Company
11%
Retailer
9%
Outsourcing Company
13%
Construction Company
12%
Comms Service Provider
9%
University
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
No data available
 

Also Known As

AppRiver Advanced Email Security
OPSWAT MetaDefender Email Security, MetaDefender Email Gateway Security, MetaDefender Email Security
 

Overview

 

Sample Customers

IHMC
https://www.opswat.com/blog/how-one-of-the-largest-banks-in-taiwan-uses-opswat-metadefender-email-security-to-close-security-gaps https://www.opswat.com/blog/hapool-insurance-achieves-almost-100-reduction-in-email-threats-with-opswat https://www.opswat.com/blog/luzerner-psychiatrie-ag-stops-email-borne-malware-attacks-with-opswat-technology
Find out what your peers are saying about AppRiver Email Security vs. MetaDefender Email Gateway Security and other solutions. Updated: November 2026.
921,523 professionals have used our research since 2012.