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Barracuda Email Security Gateway vs Mimecast Email Security comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jul 27, 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
6.0
Mimecast Email Security effectively prevents phishing, enhancing security and providing significant protection despite challenges in quantifying ROI.
There is definitely a return on investment when using Mimecast, as it blocks phishing emails, reducing the risk of significant financial losses.
 

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
6.0
Mimecast Email Security's customer service is mixed, with responsiveness praised by some, but issues with waiting times noted by others.
From the vendor, I would give the technical support an eight out of ten.
Support personnel are hesitant to engage in remote sessions, preferring to share documentation via email.
Mimecast technical support is generally quite good.
I would rate my experience with technical support of Mimecast Email Security between seven and eight out of ten for their support.
 

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
7.2
Mimecast Email Security is a scalable SaaS solution, praised for flexibility and effectiveness across various organization sizes and industries.
If Mimecast Email Security introduces API solutions, it will dominate the market.
 

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 generally stable and reliable, with rare bugs, occasional minor issues, and minimal downtime reported.
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.
 

Room For Improvement

Barracuda Email Security Gateway needs upgrades in usability, integration, scalability, support, spam filtering accuracy, and anti-phishing measures.
Mimecast Email Security requires pricing, detection, user interface improvements, better support, and enhanced AI integration for smoother operations.
If it's considered a phishing email, it should be blocked for all users, not just some.
Sometimes there are false positive emails coming through, so they should improve further on detection technologies and techniques.
When we add mails to email secure Sender Policy Authentication with extended options, all mails must pass this Mail Security Gateway.
A lot of emails were missed despite being known samples.
Mimecast Email Security can be improved by adding some API integrations.
We discussed the phishing aspect, the DNS system, and the key rotation.
 

Setup Cost

The Barracuda Email Security Gateway is competitively priced, scalable, with varied user opinions and crucial regional market considerations.
Mimecast Email Security offers comprehensive features but is considered premium, with variable pricing flexibility and additional support costs.
Compared with others, Barracuda Email Security Gateway is cheaper.
The pricing is higher for Mimecast, particularly for the Indian market, where it is considered expensive.
 

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, seamless Microsoft 365 integration, and user-friendly features for comprehensive email threat mitigation.
The real-time threat intelligence feature is particularly useful as it detects all kinds of threats identified by incoming mails.
The main benefit from Barracuda Email Security Gateway is better security for the email flow.
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.
A distinct advantage of Mimecast is its ability to block phishing and impostor attacks, which are significant threats currently.
Mimecast Email Security includes the best gateway solution across all Cisco, Trend Micro, and other solutions.
 

Categories and Ranking

Barracuda Email Security Ga...
Ranking in Secure Email Gateway (SEG)
5th
Average Rating
8.0
Reviews Sentiment
6.7
Number of Reviews
55
Ranking in other categories
DMARC Authentication Software (3rd)
Mimecast Email Security
Ranking in Secure Email Gateway (SEG)
4th
Average Rating
8.0
Reviews Sentiment
6.1
Number of Reviews
32
Ranking in other categories
Office 365 Protection (3rd)
 

Mindshare comparison

As of September 2025, in the Secure Email Gateway (SEG) category, the mindshare of Barracuda Email Security Gateway is 6.6%, down from 8.6% compared to the previous year. The mindshare of Mimecast Email Security is 12.6%, down from 15.4% 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 Security12.6%
Barracuda Email Security Gateway6.6%
Other80.8%
Secure Email Gateway (SEG)
 

Featured Reviews

WalidChowdhury - PeerSpot reviewer
Robust email protection with advanced features such as effective spam filtering, virus and malware defense, phishing protection and high scalability
Our customer faced a significant challenge with spam, leading to increased expenses. The complexity of their email infrastructure added to the issue, with some clients using Microsoft Exchange, others relying on different systems, and some operating on Linux platforms. To address this, we…
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.
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Use our free recommendation engine to learn which Secure Email Gateway (SEG) solutions are best for your needs.
867,349 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Computer Software Company
14%
Financial Services Firm
9%
Manufacturing Company
8%
Government
6%
Computer Software Company
14%
Financial Services Firm
7%
Manufacturing Company
7%
Comms Service Provider
6%
 

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 Business16
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?
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...
 

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: July 2025.
867,349 professionals have used our research since 2012.