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Barracuda Email Protection vs Microsoft Defender for Office 365 comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jan 19, 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
5.7
Barracuda Email Protection reduces costs, enhances security, and increases staff awareness, resulting in high user satisfaction and renewed licenses.
Sentiment score
7.1
Microsoft Defender for Office 365 boosts efficiency, cuts phishing, integrates security, reduces tool costs, and mitigates risk.
In an estimate, we were paying close to 300,000, but now we are sitting with Barracuda Email Protection at 100,000.
IT Officer at MVA Fund
The IT department has saved time and cost, as they do not have to run up and down fighting with malicious spam or malicious attacks.
Business Development Manager at Procter & Gamble
We see a return on investment from using Barracuda Email Protection because we are stopping attacks and running our business smoothly.
Cybersecurity Team Leader at EMAK For Computer Manufacturing (ECM)
It has also decreased our time to detection and response by about 15 to 20 percent.
Technology support manager at Alfred State College
Overall, cost of owning and operating our system goes down.
Designation Chief Consultant at Avtow
It's hard to quantify the return on investment we've seen from Microsoft Defender for Office 365.
Chief Architect at a tech vendor with 1,001-5,000 employees
 

Customer Service

Sentiment score
6.5
Barracuda Email Protection's customer service is praised for responsiveness, professionalism, and proactiveness, with technical support rated highly.
Sentiment score
5.7
Microsoft Defender for Office 365 support is reliable but varies with subscription level and complexity of issues.
This is particularly problematic for a financial institution and banking customer.
Director Of Technology at PT Exa Teknologi Indonesia
They went through the process and recommended a change in their platform to address the issue.
Director, Information Technology at St Albans High School For Girls
They are quick to find a solution, and they are available twenty-four seven, so overall, it is a great customer support team.
Business Development Manager at Procter & Gamble
Over the past two years, there have been no critical problems.
Solution Consultant at BIM Group of Companies
we opened tickets, and they typically resolve them quickly.
Chief Architect at a tech vendor with 1,001-5,000 employees
With a subscription for Microsoft Defender for Office 365, it is an eight. Without it, it is a six.
Manager at a tech services company with 10,001+ employees
 

Scalability Issues

Sentiment score
6.9
Barracuda Email Protection is highly scalable for businesses of all sizes, preferred for its effective performance and cloud options.
Sentiment score
7.8
Microsoft Defender for Office 365 efficiently scales with cloud-native design, ensuring reliable performance and seamless integration for diverse organizations.
Barracuda does not limit you based on how many mailboxes or users you have, which is one of the good things for Barracuda.
Director Of Technology at PT Exa Teknologi Indonesia
Barracuda Email Protection's scalability is very good because it handles all my clients' emails and all my organization emails.
Business Development Manager at Procter & Gamble
Scalability is expensive for Barracuda Email Protection.
IT Officer at MVA Fund
We have never faced scalability problems, and Microsoft manages it effectively.
Solution Consultant at BIM Group of Companies
Microsoft Defender for Office 365 scales transparently for us, as we grew from 1,000 users to 3,000 users, and we didn't notice much difference.
Chief Architect at a tech vendor with 1,001-5,000 employees
Microsoft Defender for Office 365 scales with the growing needs of my company well.
Senior Client Director and Advisory Service Leader at Crossfuze
 

Stability Issues

Sentiment score
8.3
Barracuda Email Protection is rated highly for stability and reliability, with effective security and proactive support noted by users.
Sentiment score
7.8
Microsoft Defender for Office 365 offers consistently reliable performance with minimal downtime, high user ratings, and manageable minor issues.
Customers chose a different product after experiencing a problem when they upgraded the firmware, which caused the system to restart multiple times during working hours.
Director Of Technology at PT Exa Teknologi Indonesia
Barracuda Email Protection's stability is good, with no lagging, no crashes, and no errors.
Cybersecurity Team Leader at EMAK For Computer Manufacturing (ECM)
I think Barracuda Email Protection is stable and very reliable.
IT Officer at MVA Fund
I would rate the stability of Microsoft Defender for Office 365 as 10 over 10 because it's highly available, it works, and it does the job it is meant to do.
Cloud Solutions Architect at a tech services company with 201-500 employees
I have not experienced any downtime, crashes, or performance issues because of Defender.
Technology Associate at a financial services firm with 51-200 employees
The solution is stable, as we have been using it for the past two years.
Solution Consultant at BIM Group of Companies
 

Room For Improvement

Barracuda Email Protection needs improved zero trust features, data retrieval, reporting, user interfaces, pricing, integration, and mobile performance.
Microsoft Defender for Office 365 needs improvements in usability, false positive reduction, phishing detection, scalability, and reporting capabilities.
The day we stop improving is the day we die.
Group ICT Manager at a mining and metals company with 501-1,000 employees
Users must go through an induction session where I guide them in configuring quarantine alerts rather than having default settings based on group membership.
Director, Information Technology at St Albans High School For Girls
Barracuda Email Protection could improve in the future to make it more competitive by addressing the fact that Barracuda started with anti-spam and email protection, but now they are moving more to cloud-based solutions rather than device-based or hardware-based solutions.
Director Of Technology at PT Exa Teknologi Indonesia
The main area for improvement is simplifying the implementation and rollout process.
Infrastructure and Security Lead at Vedanta
Microsoft could improve by offering recommendations for domain spoofing attacks, especially scenarios where DNS records like SPF, DKIM, and DMARC are not properly published.
Solution Consultant at BIM Group of Companies
There is a different console for different things; I just want one consolidated console.
Senior Director, Security Architecture & Engineering at a leisure / travel company with 10,001+ employees
 

Setup Cost

Barracuda Email Protection offers competitive and affordable pricing, often comparable to Microsoft 365, with potential discounts during negotiations.
Microsoft Defender for Office 365 is cost-effective with E5, costly standalone, requiring careful planning for subscription-based licensing.
I find that Barracuda Email Protection has a very good licensing model, providing capable features at a very good and affordable price.
Cybersecurity Team Leader at EMAK For Computer Manufacturing (ECM)
In my experience, the pricing, setup cost, and licensing for Barracuda Email Protection are competitively priced, making it very affordable for any size of organization.
Business Development Manager at Procter & Gamble
I would say the price for Barracuda Email Protection is very nice; the solution is not expensive.
IT Officer at MVA Fund
We've likely saved 30% of costs.
Designation Chief Consultant at Avtow
Money-wise, it is a part of the Office 365 suite, making it slightly more expensive compared to Trend Micro.
Infrastructure and Security Lead at Vedanta
Microsoft is quite affordable with a lot of features available for any size organization.
Solution Consultant at BIM Group of Companies
 

Valuable Features

Barracuda Email Protection offers comprehensive email security with threat protection, spam filtering, easy integration, and cost-effective incident response.
Microsoft Defender for Office 365 enhances security with AI-driven phishing detection and robust protection across Microsoft 365 services.
Our security has also increased from forty percent to sixty-five percent, especially when dealing with all the threats that come through emails.
Business Development Manager at Procter & Gamble
We do use Barracuda Data Protection functions, and the advantage we have is that the backed-up data is protected from any possible attack that can come or any kind of hijack or data being misused.
Director at Dynamic Group
Barracuda Email Protection has positively impacted my client's organization by reducing almost 50 to 60 percent of phishing emails, making it more secure and allowing us to feel safe from phishing incidents.
Security Engineer at Payatu
It ranks the threats and allows us to prioritize those hitting us the hardest, such as email threats.
Technology support manager at Alfred State College
It provides end-to-end visibility on email threats such as phishing, extending beyond Exchange Online Protection.
Solution Consultant at BIM Group of Companies
The value of the DLP feature is significant to us because we have internal data, sometimes sensitive, and the users may not always be aware of security and privacy, which might lead them to send out information mistakenly to external parties.
Chief Architect at a tech vendor with 1,001-5,000 employees
 

Categories and Ranking

Barracuda Email Protection
Ranking in Email Archiving
3rd
Ranking in Email Security
8th
Average Rating
8.8
Reviews Sentiment
6.8
Number of Reviews
26
Ranking in other categories
Security Incident Response (8th), Office 365 Protection (4th)
Microsoft Defender for Offi...
Ranking in Email Archiving
1st
Ranking in Email Security
2nd
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
61
Ranking in other categories
Advanced Threat Protection (ATP) (3rd), Microsoft Security Suite (9th), Secure Email Gateway (SEG) (2nd)
 

Mindshare comparison

As of September 2026, in the Email Security category, the mindshare of Barracuda Email Protection is 2.4%, down from 2.8% compared to the previous year. The mindshare of Microsoft Defender for Office 365 is 5.2%, down from 11.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security Mindshare Distribution
ProductMindshare (%)
Microsoft Defender for Office 3655.2%
Barracuda Email Protection2.4%
Other92.4%
Email Security
 

Featured Reviews

Xavie Simons - PeerSpot reviewer
Business Development Manager at Procter & Gamble
Improved email security has reduced spam, simplified encrypted mail, and strengthened user trust
The best features Barracuda Email Protection offers include good spam filtering and very good sandboxing of all links, as well as good encryption. It also has integrated logging for user management of their own spam. It has better filtering technology, so few are false positives as well, with excellent anti-spam engines and logging. It is extremely easy to install, configure, and set up, and there is excellent message tracking for folks that say they have not received an email they were expecting. Integrated logging and user management make my daily work easier because it is very easy to log in and to manage this tool, hence making it a very good tool for email protection. It also has excellent, easy-to-add designated users as site administrators, and it is competitively priced. It has a user-friendly portal, strong cloud-based features, and no additional maintenance cost, along with responsive support. Barracuda Email Protection has positively impacted my organization by handling encryption better than any other tool I have used before, which has increased our email protection significantly. Our security has also increased from forty percent to sixty-five percent, especially when dealing with all the threats that come through emails. It has been a great tool because we can handle email delays and delays on file scanning. When our partners are happy, we are very happy, and it has helped us have less time chasing bad emails. The fast implementation of encrypted mail keeps employees working with less interruption since they are happy, satisfied, and secure.
Emeka Ndulu - PeerSpot reviewer
Cloud Solutions Architect at a tech services company with 201-500 employees
Improves threat visibility and response while reducing manual tasks and training users against phishing
I appreciate the attack simulation feature whereby I get to train users and educate them on how to identify phishing emails and spam emails, as well as the anti-spam protection. It gives me visibility into my threat environment and threat landscape to ensure that I am one step ahead of any likelihood of threats within my environment. I get to detect it and respond, so the threat intelligence is very effective. Microsoft security solutions save my time. It saves money because once I protect my environment, I don't lose money. It has decreased my detection time and my time to respond.
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Top Industries

By visitors reading reviews
Outsourcing Company
11%
Manufacturing Company
10%
Computer Software Company
9%
Financial Services Firm
8%
Computer Software Company
11%
Manufacturing Company
10%
Financial Services Firm
9%
Comms Service Provider
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business18
Midsize Enterprise7
Large Enterprise15
By reviewers
Company SizeCount
Small Business24
Midsize Enterprise11
Large Enterprise32
 

Questions from the Community

What do you like most about Barracuda Email Protection?
Barracuda Email Protection is easy to deploy and maintain. It doesn't require a specialized resource to manage this tool.
What is your experience regarding pricing and costs for Barracuda Email Protection?
I would say the price for Barracuda Email Protection is very nice; the solution is not expensive.
What needs improvement with Barracuda Email Protection?
Considering it integrates with Azure, I would like to be able to effectively set up policies where people are by default included in certain settings. For instance, for email quarantine, I can't se...
What is your experience regarding pricing and costs for Microsoft Defender for Office 365?
My experience with pricing, setup, and licensing is that it's actually quite reasonable even on the licensing side as a standalone product. It's very competitive compared to what competitors are ch...
What needs improvement with Microsoft Defender for Office 365?
I think Microsoft Defender for Office 365 can be improved by creating more educational pieces about not just looking for malware. We are seeing a lot more malware-less emails that Defender for Offi...
What is your primary use case for Microsoft Defender for Office 365?
My main use cases for Microsoft Defender for Office 365 include email hygiene.
 

Also Known As

Barracuda Essentials, Barracuda Forensics and Incident Response
MS Defender for Office 365
 

Overview

 

Sample Customers

ACT Government, Acumen Group, AGIP, Delta Dental Plans Association, Desai/Nasr Consulting Engineers, Inc., Equinox Information Systems
Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Find out what your peers are saying about Barracuda Email Protection vs. Microsoft Defender for Office 365 and other solutions. Updated: September 2026.
914,109 professionals have used our research since 2012.