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Mimecast Advanced Email Security vs Trellix Collaboration Security comparison

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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
5.2
Organizations find it hard to measure ROI from Mimecast's security, despite strong threat protection and appreciated features.
Sentiment score
8.0
Trellix Collaboration Security boosts ROI by reducing incidents, improving efficiency, and lowering manual workload and false positives.
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
5.4
Mimecast Advanced Email Security's customer service is generally rated highly, with prompt support but some concerns about flexibility and communication.
Sentiment score
6.8
Trellix Collaboration Security support is mixed; praised for knowledgeable service but criticized for inconsistent response times globally.
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 offers high scalability, managing large user increases and email volumes efficiently across various organization sizes.
Sentiment score
8.0
Trellix Collaboration Security is highly scalable, adaptable, and efficiently manages environments, but licensing may impact scaling.
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
7.6
Mimecast Advanced Email Security is praised for stability and effectiveness, despite occasional downtime and login issues.
Sentiment score
8.2
Trellix Collaboration Security offers high stability and reliability, with rare issues primarily during complex API integrations across environments.
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 needs improvements in customer support, interface, spam filtering, training resources, pricing, and administrative simplicity to enhance user experience.
Trellix Collaboration Security needs improved reporting, customization, interface, language support, and stronger data loss prevention capabilities.
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 seen as costly, compared to competitors, particularly in price-sensitive markets like India.
Trellix Collaboration Security's pricing varies, seen as affordable by some but costly for smaller businesses, with flexible licensing options.
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 Advanced Email Security offers robust threat protection, easy configuration, scalability, and seamless integration with Microsoft 365 for enhanced security.
Trellix Collaboration Security offers comprehensive threat prevention and management with advanced features for enhanced protection and streamlined user experience.
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 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)
Trellix Collaboration Security
Ranking in Email Security
12th
Ranking in Secure Email Gateway (SEG)
7th
Average Rating
8.8
Reviews Sentiment
6.9
Number of Reviews
21
Ranking in other categories
Instant Communications Security and Compliance (2nd), AI Security (14th)
 

Mindshare comparison

As of August 2026, in the Email Security category, the mindshare of Mimecast Advanced Email Security is 4.0%, down from 5.9% compared to the previous year. The mindshare of Trellix Collaboration Security is 2.4%, up from 1.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security Mindshare Distribution
ProductMindshare (%)
Mimecast Advanced Email Security4.0%
Trellix Collaboration Security2.4%
Other93.6%
Email Security
 

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.
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Top Industries

By visitors reading reviews
Computer Software Company
10%
Financial Services Firm
9%
Outsourcing Company
9%
Construction Company
8%
Construction Company
15%
Healthcare Company
13%
Comms Service Provider
9%
Manufacturing Company
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise12
Large Enterprise20
By reviewers
Company SizeCount
Small Business15
Midsize Enterprise7
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?
A few areas stand out: Market coverage. The product needs to expand into markets it currently doesn't fully serve — North Africa in particular — and address the sales restrictions that exist in cer...
What is your primary use case for FireEye Email Security?
Trellix Collaboration Security is a tool used for file inspection, URL analysis, behavioral analysis, and integration with existing security tools. The product mainly serves the purpose of scanning...
What advice do you have for others considering FireEye Email Security?
Trellix Collaboration Security has seamless integration with most vendors, especially the SIEM solutions vendors, which is an advantage. There is, however, room for improvement in support services,...
 

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

Hewlett-Packard Company (HP), Cushman and Wakefield, PIB Group, Swissport
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: August 2026.
911,549 professionals have used our research since 2012.