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Coro vs Microsoft Defender for Office 365 comparison

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Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Coro
Ranking in Email Security
51st
Average Rating
0.0
Reviews Sentiment
3.1
Number of Reviews
1
Ranking in other categories
Data Loss Prevention (DLP) (69th), Endpoint Protection Platform (EPP) (52nd), Endpoint Detection and Response (EDR) (61st)
Microsoft Defender for Offi...
Ranking in Email Security
2nd
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
61
Ranking in other categories
Email Archiving (2nd), Advanced Threat Protection (ATP) (3rd), Microsoft Security Suite (9th), Secure Email Gateway (SEG) (2nd)
 

Mindshare comparison

As of October 2026, in the Email Security category, the mindshare of Coro is 0.5%, up from 0.5% compared to the previous year. The mindshare of Microsoft Defender for Office 365 is 5.1%, down from 11.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security Mindshare Distribution
ProductMindshare (%)
Microsoft Defender for Office 3655.1%
Coro0.5%
Other94.4%
Email Security
 

Featured Reviews

Vignesh  K - PeerSpot reviewer
Practice Engineer at Cloudunicorn.in
Auto scanning and enhanced security but re-adding protections need improvement
At that time, we observed certain issues with the product. The functionalities could be improved, such as the isolation feature. If we remove our protection, we cannot easily add it back. If, in our organization, we need to remove a specific system for a particular time, we cannot add it back for security after doing so. This is one thing we have experienced. Scalability is also lacking. If we want to do the same thing repeatedly, there's not much the solution offers; it isn't very strong.
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.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"The auto-scanning feature is quite beneficial."
"I would say that 90% of the spam and phishing attack emails get blocked right off the bat."
"Threat Explorer is an invaluable tool for me, and it plays a crucial role in helping me discern the origins of various email campaigns, pinpointing where they emanate from, and identifying the individuals within our organization who are affected."
"Microsoft Defender for Office 365 saves me time; it does save a lot of time, especially with the automation."
"The stability of Microsoft Defender for Office 365 is fantastic."
"Technical support is very good. They are knowledgeable and respond quickly."
"The email protection is excellent, especially in terms of anti-phishing policies."
"Some of the valuable features on the email side are anti-phishing, anti-malware, and Safe Links."
"With Defender for Office 365, we have been able to increase the security posture across our organization."
 

Cons

"Scalability is lacking. If we want to do the same thing repeatedly, there's not much the solution offers; it isn't very strong."
"The functionalities could be improved, such as the isolation feature."
"Sometimes I have to recategorize things when it takes the wrong step and I do not want it to classify something as suspicious."
"Specifically, within Microsoft Defender for Office 365, I want it to improve the DLP capabilities."
"I assess the stability and reliability of the solution as seven out of ten."
"Microsoft sometimes has downtime, and we'll get several incidents coming in back to back. We have a huge backlog of notifications, many of which may be false positives. However, there might be serious alerts, so we can't risk dismissing all of them at once."
"One area for improvement is integration. For example, when it comes to external SaaS platforms, we were not able to get a lot of information on integrations with such apps for security and authentication."
"In some situations, it has not been able to pick impersonated emails having no attachments. Technical support definitely has a scope for improvement."
"The UI needs to be more user-friendly."
"They can improve their security in a way where a customer can know if all their attachments are safe or not to open through a report. The solution does its job perfectly, but it never reports to the customer whether those attachments have been stopped before or not."
 

Pricing and Cost Advice

Information not available
"I was working in the government and it was too expensive for us to use our Microsoft products."
"I know that the product is incredibly expensive."
"The pricing has become expensive."
"While Microsoft Defender for Office 365 necessitates pricier E3 or E5 subscriptions, the extensive functionality offered by these licenses across various Microsoft products justifies the investment."
"The product is very expensive."
"The pricing is normal. Considering its popularity, it's not overpriced."
"From the pricing point of view, like any other product in the market, there is scope for negotiation."
"Defender is a little bit more expensive as compared to others. We are in the manufacturing environment. So, we don't have a high budget for all of our endpoint devices. Its cost is a major concern for us."
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Top Industries

By visitors reading reviews
Construction Company
13%
Comms Service Provider
11%
Manufacturing Company
9%
Healthcare Company
7%
Computer Software Company
11%
Manufacturing Company
10%
Financial Services Firm
8%
Comms Service Provider
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business24
Midsize Enterprise11
Large Enterprise32
 

Questions from the Community

What is your experience regarding pricing and costs for Coro?
The cost is reasonable because it is aimed at SMB customers, not enterprise customers. The prices are reasonable. We received a demo license, so we tried it more extensively.
What needs improvement with Coro?
At that time, we observed certain issues with the product. The functionalities could be improved, such as the isolation feature. If we remove our protection, we cannot easily add it back. If, in ou...
What is your primary use case for Coro?
We have not sold the product to any customers as of now. We are still in the testing phase, which means we, along with our partners, are the current users.
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

No data available
MS Defender for Office 365
 

Overview

 

Sample Customers

Lenovo, Dropbox, T-Systems
Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Find out what your peers are saying about Proofpoint, Microsoft, Check Point Software Technologies and others in Email Security. Updated: September 2026.
918,957 professionals have used our research since 2012.