No more typing reviews! Try our Samantha, our new voice AI agent.

Mimecast Advanced Email Security vs Trellix Collaboration 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:
 

ROI

Sentiment score
5.3
Mimecast Advanced Email Security offers substantial protection against threats, justifying its cost despite support and stability concerns.
Sentiment score
8.0
Trellix boosts ROI by reducing security incidents and workload, but training costs pose challenges for smaller firms.
There is definitely a return on investment when using Mimecast, as it blocks phishing emails, reducing the risk of significant financial losses.
Senior Tech. Lead at WE
The ROI which companies see should be able to justify buying Mimecast Advanced Email Security.
Solution Architect Cybersecurity at Microland Limited
I have seen a return on investment with Trellix Collaboration Security; specifically, money was saved and fewer employees were needed because I do not need employees on different sites.
Network & Security Lead at Net-International
I observe that the return on investment is hindered by the lack of adequate training opportunities, with Trellix's own training being quite costly, ranging from 2,000 to 4,000 dollars, which many small or medium-sized businesses cannot afford.
Endpoint Security Analyst at BNP Paribas
I have seen a return on investment from using Trellix Collaboration Security as we have saved time and reduced security incidents, improving our overall effectiveness.
Sr Network & System Engineer at a tech services company with 11-50 employees
 

Customer Service

Sentiment score
5.3
Mimecast Advanced Email Security offers responsive support, though users suggest enhancements in flexibility and documentation for even better service.
Sentiment score
6.8
Trellix Collaboration Security customer service varies, with superior email security support; Indian support lags, premium offers added benefits.
Support personnel are hesitant to engage in remote sessions, preferring to share documentation via email.
Senior Tech. Lead at WE
The customer support for Mimecast Advanced Email Security is excellent.
Manager - EUC at Finthrive
We instantly get customer support from Mimecast Advanced Email Security whenever there is a requirement.
System Engineer II at a media company with 5,001-10,000 employees
My experience with the Indian support team was not as satisfactory since they did not provide adequate support to rectify issues.
Network & Security Lead at Net-International
They have dedicated email security support engineers.
Security Engineer at itsipl
Very knowledgeable engineers on the product who have addressed any questions or issues.
Technical Specialist at VDA Infosolutions Pvt. Ltd.
 

Scalability Issues

Sentiment score
7.0
Mimecast Advanced Email Security is highly scalable, seamlessly supporting diverse organizational sizes and large email volumes in cloud environments.
Sentiment score
8.0
Trellix Collaboration Security is scalable, integrates well, and adapts to cloud or on-premises, despite user addition challenges.
It handles email flow very smoothly, and we never face any issues with email delivery as our organization grows or email volume increases.
System Engineer II at a media company with 5,001-10,000 employees
If Mimecast Email Security introduces API solutions, it will dominate the market.
Email Security Engineer at Logic Infosecurity
While our user base remains around 2,200, I believe it can adapt to much larger requirements as needed, based on discussions with others managing larger organizations.
Manager - EUC at Finthrive
Scalability benefits me by allowing for growth.
Cyber Security Engineer at a tech services company with 11-50 employees
Trellix Collaboration Security scalability allows me to use sensors on-cloud, on-premises, inside premises, and in a hybrid environment.
Network & Security Lead at Net-International
Trellix Collaboration Security is very good when it comes to scalability, demonstrating impressive capacity for growth.
Endpoint Security Analyst at BNP Paribas
 

Stability Issues

Sentiment score
7.5
Mimecast Advanced Email Security is highly stable, reliable, and efficient, despite occasional downtime and login issues.
Sentiment score
8.2
Trellix Collaboration Security is praised for stability and reliability, with minimal downtime and high user ratings despite integration challenges.
They confirm it's a good solution where only one or two rare emails get through, while the rest are properly blocked without any issues.
Email Security Engineer at Logic Infosecurity
The issues we did have were causing quite a lot of problems.
IT Manager at a logistics company with 201-500 employees
Mimecast Advanced Email Security is a good product and is very stable.
Solution Architect Cybersecurity at Microland Limited
Sometimes, integration can be challenging, impacting its stability.
Cyber Security Engineer at a tech services company with 11-50 employees
 

Room For Improvement

Mimecast Advanced Email Security needs better support, interface, accuracy, simplified admin features, competitive pricing, and enhanced phishing detection.
Trellix Collaboration Security needs improvements in zero-day protection, usability, integration, cost, and email digital defenses.
When you buy an XDR provider, they give you a complete holistic story around it, showing what has happened, which email somebody has clicked on, whether there have been any changes, and whether there is any network activity.
Solution Architect Cybersecurity at Microland Limited
A lot of emails were missed despite being known samples.
Senior Tech. Lead at WE
Mimecast Email Security is somewhat expensive compared to the competition in the Indian market.
Co-Founder & VP-Sales at QuantumShield Technologies LLP
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.
Senior Team Leader at BMB
To improve vulnerabilities, Trellix can use an automation process to check if the system is vulnerable.
Network & Security Lead at Net-International
Trellix Collaboration Security is working smoothly.
Technical Specialist at VDA Infosolutions Pvt. Ltd.
 

Setup Cost

Mimecast Advanced Email Security is costly, with some users valuing its ROI, while others find it non-competitive.
Trellix Collaboration Security's pricing is seen as costly for small businesses but valuable compared to international alternatives.
The pricing is higher for Mimecast, particularly for the Indian market, where it is considered expensive.
Senior Tech. Lead at WE
Regarding the price, I think that in terms of similar products, it is pretty much in the same line, so I think it's reasonable.
IT Manager at a logistics company with 201-500 employees
Overall, my experience with pricing, setup costs, and licensing was smooth.
Manager - EUC at Finthrive
It is quite expensive and should be reconsidered.
Cyber Security Engineer at a tech services company with 11-50 employees
The setup cost was very cheap.
Network & Security Lead at Net-International
My experience with pricing, setup cost, and licensing for Trellix Collaboration Security is that pricing and setup were reasonable and licensing was straightforward.
Sr Network & System Engineer at a tech services company with 11-50 employees
 

Valuable Features

Mimecast offers comprehensive email security with phishing prevention, sandboxing, and seamless Microsoft 365 integration, ensuring robust threat protection.
Trellix Collaboration Security provides advanced threat intelligence and protection with easy integration, focusing on ransomware, phishing, and APT defenses.
There was a signature phishing scam on the internet, but Mimecast Advanced Email Security caught it before it came to fruition and instantly blocked that signature-based phishing scam.
System Engineer II at a media company with 5,001-10,000 employees
It easily generates reports about the kinds of emails coming in weekly and classifies them into various categories, making it very helpful to analyze and ensure our email gateway remains safe and secure by updating all security patches.
Senior Managing Consultant at a tech vendor with 10,001+ employees
A distinct advantage of Mimecast is its ability to block phishing and impostor attacks, which are significant threats currently.
Senior Tech. Lead at WE
Trellix Email Security protects at the gateway level, while Trellix Collaboration Security ensures protection from insider users and enhances cyber resilience.
Security Engineer at itsipl
This positive impact has led to measurable outcomes, such as threats being blocked automatically that could have caused real problems, and the team feels much safer using collaboration tools now than they did before.
Technical Specialist at VDA Infosolutions Pvt. Ltd.
One of the most valuable features is the protection against vulnerabilities, particularly through virtual patching.
Cyber Security Engineer at a tech services company with 11-50 employees
 

Categories and Ranking

Mimecast Advanced Email Sec...
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), Secure Web Gateways (SWG) (10th), Office 365 Protection (2nd)
Trellix Collaboration Security
Ranking in Secure Email Gateway (SEG)
7th
Average Rating
8.8
Reviews Sentiment
6.9
Number of Reviews
20
Ranking in other categories
Email Security (11th), Instant Communications Security and Compliance (2nd), AI Security (14th)
 

Mindshare comparison

As of July 2026, in the Secure Email Gateway (SEG) category, the mindshare of Mimecast Advanced Email Security is 15.2%, up from 12.0% compared to the previous year. The mindshare of Trellix Collaboration Security is 5.0%, up from 2.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Secure Email Gateway (SEG) Mindshare Distribution
ProductMindshare (%)
Mimecast Advanced Email Security15.2%
Trellix Collaboration Security5.0%
Other79.8%
Secure Email Gateway (SEG)
 

Featured Reviews

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.
Jorge Abalo - PeerSpot reviewer
Endpoint Security Analyst at BNP Paribas
Endpoint protection has strengthened network control and has simplified global threat response
In my opinion, the best features Trellix Collaboration Security offers include the firewall, the on-access scan, and the ability to obtain daily signatures for the latest malware. These daily signatures, referred to as content, ensure that we are protected against the most recent malware threats recognized by other companies. Another feature I particularly enjoy is the capability to maintain different locations that can communicate with the fabric, or DXL fabric as I refer to it, allowing me to create something akin to an EDR for immediate responses to resolve issues. The DXL fabric has helped my organization by enabling communication between different locations, such as one in Europe, another in South America, and one here. This fabric communicates with a broker that interacts with the TIE servers, which maintain the reputation of files, certificates, and known signatures from various regions including Europe, South America, and Canada. When something suspicious occurs, such as a certificate appearing malicious on an application, I can easily click and indicate that I trust this file, and through the fabric, I can apply an exclusion for that application across all locations simultaneously. Other features I find valuable include the SSO integration with Trellix EPO, specifically SAML SSO, allowing people not to have to manage usernames and passwords if they already utilize an SSO service for SAML; I consider this functionality to be quite beneficial.
report
Use our free recommendation engine to learn which Secure Email Gateway (SEG) solutions are best for your needs.
904,836 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Computer Software Company
11%
Financial Services Firm
9%
Construction Company
8%
Outsourcing Company
7%
Construction Company
15%
Manufacturing Company
13%
Healthcare Company
12%
Comms Service Provider
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise12
Large Enterprise18
By reviewers
Company SizeCount
Small Business15
Midsize Enterprise6
Large Enterprise17
 

Questions from the Community

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...
What needs improvement with FireEye Email Security?
I believe no improvements are needed for Trellix Collaboration Security as we are already using more tools from Trellix. I don't think any improvements are necessary or there are features missing i...
What is your primary use case for FireEye Email Security?
My main use case for Trellix Collaboration Security is to protect our platforms like Slack, Microsoft Teams, Google Workspace, Drive, OneDrive, and Google Drive. With the help of Trellix Collaborat...
What advice do you have for others considering FireEye Email Security?
My advice for others looking into using Trellix Collaboration Security is to prevent insider threat vectors because a colleague may unknowingly share infected files. You need to be vigilant and ens...
 

Also Known As

Mimecast Email Security with Targeted Threat Protection, Mimecast Web Security, Mimecast Mailbox Continuity, Email and Collaboration 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 Advanced Email Security vs. Trellix Collaboration Security and other solutions. Updated: June 2026.
904,836 professionals have used our research since 2012.