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Mimecast Email Security vs Trellix Collaboration Security comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Nov 5, 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

Mimecast Email Security
Ranking in Secure Email Gateway (SEG)
4th
Average Rating
8.0
Reviews Sentiment
6.1
Number of Reviews
31
Ranking in other categories
Office 365 Protection (3rd)
Trellix Collaboration Security
Ranking in Secure Email Gateway (SEG)
8th
Average Rating
8.6
Reviews Sentiment
7.0
Number of Reviews
15
Ranking in other categories
Email Security (18th), Instant Communications Security and Compliance (4th)
 

Mindshare comparison

As of October 2025, in the Secure Email Gateway (SEG) category, the mindshare of Mimecast Email Security is 12.5%, down from 15.0% compared to the previous year. The mindshare of Trellix Collaboration Security is 2.2%, down from 2.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Secure Email Gateway (SEG) Market Share Distribution
ProductMarket Share (%)
Mimecast Email Security12.5%
Trellix Collaboration Security2.2%
Other85.3%
Secure Email Gateway (SEG)
 

Featured Reviews

Frank Rawson - PeerSpot reviewer
It gives clients peace of mind and helps them educate their users about threats
A few years ago, our team found the implementation to be somewhat challenging. It has gotten easier as we've grown more experienced. The difficulty depends on the expertise of the person doing it. I don't work with Mimecast every day, so it might be more difficult for me than it is for one of my techs who regularly does Mimecast implementations. It requires some specific in-depth product knowledge and an understanding of email solutions. The deployment time varies. In South Africa, it depends on who you use to deploy it. If you use one of Mimecast's local partners, it can take up to two weeks because of their process. However, it's only about four to eight hours of work. After deployment, there isn't much maintenance aside from supporting and educating your customers. Users require constant education on how to use the Mimecast client and release an email that has been blocked.
BernardLugalia - PeerSpot reviewer
Provides strong data protection with virtual patching and vulnerability assessments
I primarily use it to monitor database access, particularly in banking and similar environments. It ensures that IT personnel and others do not create unauthorized accounts or users. Collaboration security assists in tracking database access and alerts in case of suspicious activity One of the…

Quotes from Members

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

Pros

"I would rate Mimecast Email Security a nine out of ten."
"It does a good job for us, and its admin console is easy to use."
"The biggest advantage of Mimecast Email Security is its spam filtering. Its filtering feature is interesting."
"The most valuable feature is the DMARC Analyzer."
"Mimecast certainly helped my customers reduce phishing emails."
"It offers an easy initial setup."
"The setup was easy."
"Based on overall experience, Mimecast Email Security is the best solution for traditional gateways."
"What I find most valuable with the solution is that it can integrate with cloud solutions, such as Google and Microsoft. Additionally, the solution is easy to use."
"FireEye is good for malware depicting and security."
"FireEye Email Security is easy to use."
"We have had very good results from the use of FireEye Email Security. We are very comfortable with this technology, but I don't know if it's necessary to move into the cloud, we will check other technologies and study them. Additionally, the solution has good integration."
"The product helps reduce the number of malicious emails reaching the user's inbox."
"Before installing, consider potential challenges with system performance, especially when integrating multiple tools, which could slow down performance."
"I like FireEye's filtering, spam digests, and its advanced threat review of email flow. It also has a broad range of riskware rules you can deploy."
"Trellix Collaboration Security is valued for being a stable and comprehensive solution that fulfills customer needs."
 

Cons

"The attachment scanning feature doesn't work properly."
"The tool can be challenging because it relies on rule-based configurations, especially for addressing impersonation threats. This approach requires setting up numerous rules to ensure filtering. It should work based on behavior-based analytics."
"Its pricing can be improved. It is a bit expensive."
"As a user, the user interface of the management console could be upgraded, for example."
"The feature that should be included is to remove the block on the encrypted files."
"The product's interface could be improved to be more user-friendly."
"The filtering needs more flexibility."
"From an administrative point of view, Mimecast is a little bit cumbersome and difficult. It's not something that the end-user can easily find navigate themselves."
"There is a need for improved integration with totally different products, such as a rapid server."
"Sometimes, integration can be challenging, impacting its stability, which is why I rate it a five out of ten."
"Sometimes especially zero-day spam emails can be passed to the user's inbox."
"I would rate them as a 1.5. The new hub created in India is not good."
"The custom tailoring is limited."
"The solution is not easy to set up. However, we have employees that have the knowledge that can do the difficult implementation. It would be better if the process was easier."
"The reporting aspect of the solution needs improvement."
"In general, our company should make the tool more robust to protect our systems."
 

Pricing and Cost Advice

"The licensing costs are per-user for the product that you get with them."
"We pay monthly fees to our provider."
"Compared to the other solutions in the market, Mimecast Email Security with Targeted Threat Protection's pricing is fine."
"It is a bit expensive."
"I'm always going to say the price needs to be lower, but it's reasonable."
"The solution is expensive."
"The customers can select the license packages as per their requirements."
"It's an expensive solution."
"The licensing is on a yearly basis."
"I rate the product price as nine out of ten, where ten is the most expensive, and one is the cheapest. There is no need to pay any extra charges apart from the licensing costs."
"The cost is very high."
"The solution requires a license to be purchased for every user."
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Top Industries

By visitors reading reviews
Computer Software Company
15%
Financial Services Firm
7%
Manufacturing Company
7%
Comms Service Provider
6%
Manufacturing Company
18%
Computer Software Company
10%
Comms Service Provider
9%
Government
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise7
Large Enterprise11
By reviewers
Company SizeCount
Small Business6
Midsize Enterprise4
Large Enterprise5
 

Questions from the Community

What do you like most about Mimecast Email Security with Targeted Threat Protection?
The interface of this solution is very easy to navigate and user-friendly. There is no delivery in email and other communications, making it reliable. The configuration is relatively easy.
What needs improvement with Mimecast Email Security with Targeted Threat Protection?
Mimecast Email Security can be improved by adding some API integrations. Instead of remaining a traditional gateway, Mimecast Email Security needs to provide API solutions similar to Check Point.
What do you like most about FireEye Email Security?
One of the valuable features of the product stems from the fact that it is easy to implement the tool in our environment.
What needs improvement with FireEye Email Security?
I would like to see the addition of email digital protection features, such as anti-spam and antivirus, not just sandboxing, in the on-premises solution.
What is your primary use case for FireEye Email Security?
I have worked on Email Security ( /categories/email-security ) both on-premises and in the cloud, Web Security, and also on MDR, which is called HX endpoint security for Trellix Collaboration Secur...
 

Also Known As

Mimecast Email Security with Targeted Threat Protection
FireEye Email Security
 

Overview

 

Sample Customers

Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group
Northshore Utility District, Luz Technologies, Air Academy Federal Credit Union, Bank Gutmann, Bank of Thailand, Penn State Health Milton S. Hershey Medical Center, State of Missouri, City and County of San Francisco, Denver Public Schools, Vodafone, Go Auto, Stater Bros. Market
Find out what your peers are saying about Mimecast Email Security vs. Trellix Collaboration Security and other solutions. Updated: September 2025.
868,787 professionals have used our research since 2012.