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Barracuda Email Security Gateway vs Mimecast Email Security comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Nov 2, 2025

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
1.0
Barracuda Email Security Gateway prioritizes email safety, providing fewer disruptions despite potential ROI concerns for businesses and service providers.
Sentiment score
5.5
Users have mixed ROI views on Mimecast Email Security, noting its effectiveness against threats but questioning cost-efficiency.
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
 

Customer Service

Sentiment score
8.5
Barracuda Email Security Gateway customer support is praised for responsiveness and efficiency, though limited by time zones and language.
Sentiment score
5.6
Mimecast Email Security support is helpful but has mixed reviews due to delays and reliance on indirect solutions.
From the vendor, I would give the technical support an eight out of ten.
Head of cloud service. at a comms service provider with 51-200 employees
Support personnel are hesitant to engage in remote sessions, preferring to share documentation via email.
Senior Tech. Lead at WE
Mimecast technical support is generally quite good.
Information Security Analyst at Enfield Central Library
I would rate my experience with technical support of Mimecast Email Security between seven and eight out of ten for their support.
Email Security Engineer at Logic Infosecurity
 

Scalability Issues

Sentiment score
8.1
Barracuda Email Security Gateway is scalable for SMBs but may not suit very large enterprises, with varied user opinions.
Sentiment score
7.0
Mimecast Email Security is praised for adaptability and scalability, supporting various industries despite minor feature challenges.
If Mimecast Email Security introduces API solutions, it will dominate the market.
Email Security Engineer at Logic Infosecurity
 

Stability Issues

Sentiment score
8.2
Barracuda Email Security Gateway is reliable and stable, with quick resolutions for minor issues and high user ratings.
Sentiment score
7.5
Mimecast Email Security is reliable and stable, with minimal glitches, occasional delays, and high user ratings for performance.
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
 

Room For Improvement

Barracuda Email Security Gateway needs upgrades in usability, integration, scalability, support, spam filtering accuracy, and anti-phishing measures.
Mimecast Email Security needs improvements in pricing, detection, complexity, user interface, support, and reducing false positives and attachment issues.
If it's considered a phishing email, it should be blocked for all users, not just some.
IT Administrator at a energy/utilities company with 201-500 employees
Sometimes there are false positive emails coming through, so they should improve further on detection technologies and techniques.
Head of cloud service. at a comms service provider with 51-200 employees
When we add mails to email secure Sender Policy Authentication with extended options, all mails must pass this Mail Security Gateway.
Graduate Student at ain shams
Mimecast Email Security is somewhat expensive compared to the competition in the Indian market.
Co-Founder & VP-Sales at QuantumShield Technologies LLP
A lot of emails were missed despite being known samples.
Senior Tech. Lead at WE
We discussed the phishing aspect, the DNS system, and the key rotation.
Senior Security Engineer at ManpowerGroup
 

Setup Cost

The Barracuda Email Security Gateway is competitively priced, scalable, with varied user opinions and crucial regional market considerations.
Mimecast Email Security is often seen as costly due to user-based licensing and added fees, despite potential discounts.
Compared with others, Barracuda Email Security Gateway is cheaper.
Head of cloud service. at a comms service provider with 51-200 employees
The pricing is higher for Mimecast, particularly for the Indian market, where it is considered expensive.
Senior Tech. Lead at WE
 

Valuable Features

Barracuda Email Security Gateway offers robust spam filtering, advanced threat protection, and user-friendly features for comprehensive email security management.
Mimecast Email Security offers strong threat protection, easy setup, seamless Microsoft 365 integration, and excellent scalability and support.
The real-time threat intelligence feature is particularly useful as it detects all kinds of threats identified by incoming mails.
Graduate Student at ain shams
The most valuable feature of Barracuda Email Security Gateway that I have found is advanced threat protection.
Head of cloud service. at a comms service provider with 51-200 employees
One of the most useful features is the threat remediation module, which can be used to remove malicious emails that may have been delivered or manually remove them.
Information Security Analyst at Enfield Central Library
A distinct advantage of Mimecast is its ability to block phishing and impostor attacks, which are significant threats currently.
Senior Tech. Lead at WE
Mimecast Email Security includes the best gateway solution across all Cisco, Trend Micro, and other solutions.
Email Security Engineer at Logic Infosecurity
 

Categories and Ranking

Barracuda Email Security Ga...
Ranking in Secure Email Gateway (SEG)
6th
Average Rating
8.0
Reviews Sentiment
6.7
Number of Reviews
55
Ranking in other categories
DMARC Authentication Software (4th)
Mimecast Email Security
Ranking in Secure Email Gateway (SEG)
4th
Average Rating
8.0
Reviews Sentiment
5.9
Number of Reviews
32
Ranking in other categories
Office 365 Protection (3rd)
 

Mindshare comparison

As of December 2025, in the Secure Email Gateway (SEG) category, the mindshare of Barracuda Email Security Gateway is 6.8%, down from 7.7% compared to the previous year. The mindshare of Mimecast Email Security is 12.7%, up from 12.6% 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 Security12.7%
Barracuda Email Security Gateway6.8%
Other80.5%
Secure Email Gateway (SEG)
 

Featured Reviews

MM
Graduate Student at ain shams
Secures email by identifying threats and managing email policies effectively
The intuitive management interface feature makes email security policies very easy to implement as it's all about features that need to be enabled or disabled. Our investigation in any incident or mail is very useful as it provides all details about incoming mails, enabling thorough review and detection. The real-time threat intelligence feature is particularly useful as it detects all kinds of threats identified by incoming mails. The Impersonation license utilizes AI tools. Sometimes some phishing mails are reported as phishing, but they are not actually phishing mails. They are detected due to certain words and languages that appear suspicious but were generated by AI tools. Everyone or an advisor may use it for their own purpose or learning, even though it indicates that the mail detected is phishing when it's not.
RP
Senior Tech. Lead at WE
Block significant threats with enhanced phishing prevention
In terms of efficacy, Proofpoint is better than Mimecast, though it's a little difficult to manage. A distinct advantage of Mimecast is its ability to block phishing and impostor attacks, which are significant threats currently. Security is a major feature where email security tools like Mimecast have delivered value by identifying and preventing phishing emails.
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Use our free recommendation engine to learn which Secure Email Gateway (SEG) solutions are best for your needs.
879,259 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Computer Software Company
12%
Manufacturing Company
10%
Financial Services Firm
9%
University
5%
Computer Software Company
14%
Financial Services Firm
8%
Manufacturing Company
7%
Comms Service Provider
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business34
Midsize Enterprise12
Large Enterprise13
By reviewers
Company SizeCount
Small Business17
Midsize Enterprise7
Large Enterprise11
 

Questions from the Community

What do you like most about Barracuda Sentinel?
It not only tackles spam effectively but also incorporates advanced features like ATP and active features which ensures a comprehensive and adaptable email security solution tailored to their hete...
What is your experience regarding pricing and costs for Barracuda Sentinel?
I would suggest that pricing for Barracuda Email Security Gateway rates around seven. It is not too expensive, but it is a considerable cost. Compared with others, Barracuda Email Security Gateway ...
What needs improvement with Barracuda Sentinel?
Regarding real-time intelligent features of the Barracuda Email Security Gateway, some spam emails are still being released by the ESG to the end users, so the functionality is not working appropri...
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.
 

Also Known As

Barracuda Spam and Virus Firewall, Barracuda Sentinel
Mimecast Email Security with Targeted Threat Protection
 

Overview

 

Sample Customers

Evolution Recruitment Solutions, Evans Delivery Company, Osoyoos Credit Union, Synovis Life Technologies, Camden County Technical Schools, DEK, Evans Delivery Company, Colgate Rochester Crozer, Hemmera, South Carolina Heart Center, Ferma Corporation, Major League Baseball (MLB), Healy Brothers Automotive Group
Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group
Find out what your peers are saying about Barracuda Email Security Gateway vs. Mimecast Email Security and other solutions. Updated: December 2025.
879,259 professionals have used our research since 2012.