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MetaDefender Email Security Solutions vs Mimecast Advanced Email Security comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jun 2, 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

MetaDefender Email Security...
Ranking in Email Security
32nd
Ranking in Secure Email Gateway (SEG)
13th
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
3
Ranking in other categories
No ranking in other categories
Mimecast Advanced Email Sec...
Ranking in Email Security
4th
Ranking in Secure Email Gateway (SEG)
3rd
Average Rating
8.0
Reviews Sentiment
5.9
Number of Reviews
44
Ranking in other categories
Email Archiving (2nd), Office 365 Protection (2nd)
 

Mindshare comparison

As of August 2026, in the Secure Email Gateway (SEG) category, the mindshare of MetaDefender Email Security Solutions is 3.4%, up from 1.0% compared to the previous year. The mindshare of Mimecast Advanced Email Security is 14.6%, up from 12.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Secure Email Gateway (SEG) Mindshare Distribution
ProductMindshare (%)
Mimecast Advanced Email Security14.6%
MetaDefender Email Security Solutions3.4%
Other82.0%
Secure Email Gateway (SEG)
 

Featured Reviews

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.
Avinash Mishra - PeerSpot reviewer
Manager - EUC at Finthrive
Advanced email filtering has blocked massive spam volumes and prevents unauthorized data leaks
Improvements for Mimecast Advanced Email Security include enhancing the user interface and accessibility, particularly regarding admin capabilities to add or modify user accounts. Streamlining this could improve overall usability and security management for users. Reporting is another area needing improvement in Mimecast Advanced Email Security, as the reports provided are not very easy to decipher. With artificial intelligence being integrated into various tools including Mimecast Advanced Email Security, I believe there is potential to enhance functionality, enabling users to ask specific questions and retrieve concise answers instead of overwhelming data. I choose a nine for Mimecast Advanced Email Security because improvements such as better user interface and artificial intelligence integration features would greatly enhance its usability. While no tool is perfect, these adjustments could greatly elevate Mimecast Advanced Email Security's capabilities.

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 feature is called summary reconstruction which is used to deliver encrypted files to users."
"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."
"The sanitization is very good."
"The Large File Send feature comes in handy when you have to send fairly large attachments."
"The solution's performance is good."
"I have always found Mimecast to be very responsive; for example, if we see something come through, they address it and it helps to sort out the issues."
"The piece that is most valuable from the Mimecast standpoint will be the sandboxing feature."
"Mimecast is a brilliant product; it works very well, I have very seldomly, if ever, had any problems with it, and it does exactly what it promises to do."
"Its administration console is very easy to use. The administration console is absolutely important because you interact with the platform through it."
"The setup was easy."
"It does a good job for us, and its admin console is easy to use."
 

Cons

"The DLP should be upgraded and has room for improvement."
"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."
"Although the number of AV engines is good, it could be better."
"While it's quick and easy, the initial setup could be more user-friendly."
"The differentiation between bulk spam mail and campaign-related mail could be improved."
"Their support should be improved. They are notorious for sending you to knowledge-based articles rather than actually talking to you about the problem you're reporting."
"They could provide a unified licensing model, including all the security features."
"We discussed the phishing aspect, the DNS system, and the key rotation."
"As a user, the user interface of the management console could be upgraded, for example."
"The solution should include more AI features instead of Mimecast's more general static configuration tooling."
"The filtering needs more flexibility."
 

Pricing and Cost Advice

"According to our customers, the price of MetaDefender is high and it continues to increase by almost 15 percent each year."
"The price of Mimecast Mailbox Continuity is expensive."
"Compared to the other solutions in the market, Mimecast Email Security with Targeted Threat Protection's pricing is fine."
"For what it is, the product is overpriced."
"The product price is moderate. I rate the pricing a five out of ten."
"The solution is expensive."
"Its price is in the middle range. It is a structured licensing model where there are various components that you can add or choose to add or not."
"I'm always going to say the price needs to be lower, but it's reasonable."
"The product has good pricing in terms of return on investment."
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Top Industries

By visitors reading reviews
Construction Company
14%
Comms Service Provider
14%
Financial Services Firm
6%
Pharma/Biotech Company
6%
Computer Software Company
10%
Financial Services Firm
9%
Construction Company
8%
Outsourcing Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise12
Large Enterprise20
 

Questions from the Community

Ask a question
Earn 20 points
What needs improvement with Mimecast Email Security with Targeted Threat Protection?
There is room for improvement since new threats are emerging. Considering the availability of new features would be worthwhile. Mimecast Email Security is somewhat expensive compared to the competi...
 

Also Known As

OPSWAT MetaDefender Email Security, MetaDefender Email Gateway Security, MetaDefender Email Security
Mimecast Email Security with Targeted Threat Protection, Mimecast Web Security, Mimecast Mailbox Continuity, Email and Collaboration Threat Protection
 

Overview

 

Sample Customers

Information Not Available
Hewlett-Packard Company (HP), Cushman and Wakefield, PIB Group, Swissport
Find out what your peers are saying about MetaDefender Email Security Solutions vs. Mimecast Advanced Email Security and other solutions. Updated: August 2026.
909,725 professionals have used our research since 2012.