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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
6.2
Number of Reviews
31
Ranking in other categories
Office 365 Protection (3rd)
Trellix Collaboration Security
Ranking in Secure Email Gateway (SEG)
9th
Average Rating
8.6
Reviews Sentiment
7.0
Number of Reviews
15
Ranking in other categories
Email Security (19th), Instant Communications Security and Compliance (6th)
 

Mindshare comparison

As of August 2025, in the Secure Email Gateway (SEG) category, the mindshare of Mimecast Email Security is 12.4%, down from 15.3% compared to the previous year. The mindshare of Trellix Collaboration Security is 2.3%, up from 2.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Secure Email Gateway (SEG)
 

Featured Reviews

ShaheenKapery - PeerSpot reviewer
Provides valuable security features and has a straightforward setup process
The initial setup process is straightforward and takes a weekend at most. A .com domain can take up to forty-eight hours, while a local domain takes about four to eight hours because it has to propagate through the international DNS records. It is a cloud-only solution. If you're managing email security on-premises, you use your bandwidth to download emails, including spam, and then use your servers to clean it up. For example, say a third of your email is spam; this consumes significant bandwidth and resources. However, if you use Mimecast, they filter the emails on their servers before delivering them to you. It can be a major selling point in regions with expensive bandwidth, such as Africa. You can save bandwidth and improve overall efficiency by offloading the spam filtering to Mimecast.
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

"The product is good. To date, we have not faced any challenges."
"The initial setup is easy."
"It does a good job for us, and its admin console is easy to use."
"The integration is straightforward."
"Mimecast certainly helped my customers reduce phishing emails."
"The solution is pretty straightforward to use and easy to set up."
"The solution's performance is good."
"The product's most valuable features are impersonation protection and phishing countermeasures."
"The auto-remediation feature is valuable."
"FireEye Email Security helps us prevent spam and phishing emails and all other business-compromised email attacks."
"The product helps reduce the number of malicious emails reaching the user's inbox."
"The solution's most valuable feature is its simplicity. It's very user-friendly."
"The initial setup is simple."
"The product protects my email."
"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."
 

Cons

"They should improve the cookies management feature."
"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."
"Their support should be improved. They are notorious for sending you to knowledge-based articles rather than actually talking to you, but that is, unfortunately, kind of becoming a trend with everything. In terms of features, I haven't had any complaints. However, I don't like the fact they moved to a paid training subscription model. They used to have a lot of free webinars for training, but they have started to charge for them in the past year."
"Lately, Mimecast's outbound mail servers have been regularly blocklisted by spam filters. That didn't happen a few years back, but it seems to be a more frequent problem these days. When a server is blocklisted, it means all of my outgoing mail ends up in the recipient's junk mail. That affects my reputation and business confidence."
"As a user, the user interface of the management console could be upgraded, for example."
"The reaction time between a new threat being identified and Mimecast picking it up needs to be narrowed a bit."
"The solution's console interface was recently changed for the admins, but the previous one was much better because we could open tabs on it."
"The attachment scanning feature doesn't work properly."
"The spam detection feature could be better."
"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."
"The solution must provide features to scan QR codes for threats."
"I would like the solution to be able to automatically quarantine the malicious emails before getting to the user's mailbox and continue with regular email operations. This could result in the user clicking the email before the purge operation is completed."
"Sometimes, integration can be challenging, impacting its stability, which is why I rate it a five out of ten."
"There is a need for improved integration with totally different products, such as a rapid server."
"I would like to see this solution become more flexible."
 

Pricing and Cost Advice

"There are additional costs beyond the standard licensing fee."
"We pay monthly fees to our provider."
"The product has good pricing in terms of return on investment."
"The customers can select the license packages as per their requirements."
"It's an expensive solution."
"It is a bit expensive."
"Compared to the other solutions in the market, Mimecast Email Security with Targeted Threat Protection's pricing is fine."
"The solution is expensive."
"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 licensing is on a yearly basis."
"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
14%
Financial Services Firm
7%
Manufacturing Company
6%
Comms Service Provider
5%
Manufacturing Company
18%
Computer Software Company
12%
Comms Service Provider
9%
Government
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

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?
If I ask you about the room for improvement, we discussed the phishing aspect, the DNS system, and the key rotation. Apart from that, are there any other areas that you would like to see improved o...
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: July 2025.
865,295 professionals have used our research since 2012.