Microsoft Defender for Office 365 vs Mimecast Email Security comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Aug 2, 2022
 

Categories and Ranking

Microsoft Defender for Offi...
Average Rating
8.4
Number of Reviews
43
Ranking in other categories
Email Security (1st), Advanced Threat Protection (ATP) (1st), Microsoft Security Suite (9th)
Mimecast Email Security
Average Rating
8.0
Number of Reviews
26
Ranking in other categories
Office 365 Protection (5th), Secure Email Gateway (SEG) (4th)
 

Mindshare comparison

As of July 2024, in the Email Security category, the mindshare of Microsoft Defender for Office 365 is 13.8%, down from 20.4% compared to the previous year. The mindshare of Mimecast Email Security is 6.0%, down from 15.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security
Unique Categories:
Advanced Threat Protection (ATP)
13.5%
Microsoft Security Suite
1.9%
Office 365 Protection
16.7%
 

Featured Reviews

Luis-Brown - PeerSpot reviewer
Aug 8, 2023
Allows for easy reporting of problems, valuable anti-phishing, and anti-malware support
Microsoft Defender for Office 365 lacks proactivity in assisting us with preparing for potential threats before they occur. While they employ a substantial amount of threat intelligence to preemptively prevent incidents, their effectiveness diminishes when it comes to delivering proactive threat intelligence alerts from Microsoft. Their focus primarily revolves around managing the internal environment. On the other hand, my other vendor, Check Point, along with my membership in MS-ISAC, supplements me with this type of information. The phishing and spam filters could use some improvement. It is adequate, but it doesn't match the quality of Proofpoint or Mimecast. However, it comes close in effectiveness. Plus, if we're obtaining it for free, investing in the other products seems impractical.
IT
Nov 30, 2023
Easy-to-setup product with valuable features for impersonation protection
We use the product to address phishing attacks, security incidents, spoofing, attachment-based attacks, and impersonation. It sends image alerts to account servers before reaching the end recipient. It has behavior analysis and volume tools to detect and block malicious activities The product…

Quotes from Members

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

Pros

"Microsoft Defender for Office 365's most valuable features are safe attachments and safe links."
"The most valuable feature of Microsoft Defender for Office 365 is data backups that we can provide through ticket requests."
"Defender for Office 365 has helped eliminate having to look at multiple dashboards and that is the aspect I like most about it. It is simpler, effective, and convenient. The users like the process efficiency."
"It gives us visibility into threats and, for endpoints, it helps us to prioritize threats. We used to have a lack of visibility, but now our time to detect and respond has decreased."
"The initial setup is straightforward. You just add the license, click it, and then you can set up the rules. It is quite simple."
"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's most valuable feature is its performance."
"The most valuable feature of Microsoft Defender for Office 365 is the ease of use."
"We like Mimecast's spam filtering. The email signature feature is also a big plus for our users."
"It's good, it keeps the spam out."
"Due to our specialized use case, that HIPAA dictionary really comes in handy."
"The initial setup is very straightforward."
"It's really quite user-friendly. In terms of technical superiority and the product itself, there are no complaints. It is really cutting edge."
"The most valuable feature is the DMARC Analyzer."
"The integration is straightforward."
"In the current environment that the world is in, everyone is trying to hack everyone else, so Project+ definitely helps a lot there."
 

Cons

"Microsoft should provide more documentation for users so they can self-educate. I would like to see more documentation for advanced security features."
"Microsoft wants its well-paying customers to finish testing some of its half-baked products, find bugs, and report bugs back to Microsoft's team, which is a little frustrating for those who have to manage it and roll it up to thousands of people across the organization."
"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."
"About eight months ago, we started to measure the quantity of phishing and spam that we have been receiving, and it has been increasing a lot. That means that protection for our email is not as good as we were expecting."
"The company should focus on adding threats that the solution is currently unable to detect."
"Microsoft Defender for Office 365 should improve the troubleshooting tools. It's unclear whether the device is blocked at the firewall level or at the device itself. The granularity needed for troubleshooting is currently lacking. From my perspective, Microsoft should address this issue to benefit many users who likely share the same sentiment."
"Microsoft Defender for Office 365 should be more proactive."
"We need to be able to whitelist data at the backend."
"The installation is not so straightforward."
"The feature that should be included is to remove the block on the encrypted files."
"The price could be better, it should be reduced."
"External security features need improvement."
"Its pricing can be improved. It is a bit expensive."
"They should improve the cookies management feature."
"While it's quick and easy, the initial setup could be more user-friendly."
"They could provide a unified licensing model, including all the security features."
 

Pricing and Cost Advice

"From the pricing point of view, like any other product in the market, there is scope for negotiation."
"The pricing has become expensive."
"For large enterprise organizations, they can definitely afford it, but for small and medium organizations, they might struggle to cover the expenses."
"The solution saves money so we have seen a return on investment."
"I know that the product is incredibly expensive."
"It's a user-base subscription."
"The solution could be better by simplifying the business model of their licensing. It was hard to figure out how to get the licensing done for the environment, initially."
"The product is expensive."
"The customers can select the license packages as per their requirements."
"For what it is, the product is overpriced."
"Compared to the other solutions in the market, Mimecast Email Security with Targeted Threat Protection's pricing is fine."
"Compared to the other products in the market, it is neither cheap but nor very expensive. I would rate it somewhere in the middle, 5 out of 10."
"There are additional costs beyond the standard licensing fee."
"I'm always going to say the price needs to be lower, but it's reasonable."
"The licensing costs are per-user for the product that you get with them."
"On a scale of one to ten, where one is cheap, and ten is expensive, I rate the pricing a ten."
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Answers from the Community

HM
May 4, 2023
May 4, 2023
In my opinion, all gateways including Mimecast or Defender for O365 or ProofPoint work hand-in-hand in their respective mechanics and algorithms built. And definitely has its own advantages. However, I have been using it for my customers' MDO which is far better. I would say relying on gateways is important but at the same time USER education and reporting back to the IT administrator far impor...
See 2 answers
TL
Apr 25, 2023
Greetings Matingou, Defender for O365 I would say would suffice as it has all the tools included in Mimecast in just one single tool, may take some time to navigate at first as it gives a lot of information in just one tool but once you know your way around, you will be able to have good visibility on your email threats landscape by provides a range of protections against email-based threats such as spam, phishing, malware, and etc. It also includes features such as URL protection and attachment scanning to prevent users from clicking on malicious links or downloading harmful files. but on the other hand, Mimecast might be needed, if you require compliance measures, including data loss prevention, archiving, and encryption. It also provides greater visibility and control over email security, allowing you to monitor and manage threats in real-time. Hope this helps.
BK
May 4, 2023
In my opinion, all gateways including Mimecast or Defender for O365 or ProofPoint work hand-in-hand in their respective mechanics and algorithms built. And definitely has its own advantages. However, I have been using it for my customers' MDO which is far better. I would say relying on gateways is important but at the same time USER education and reporting back to the IT administrator far important as well. 
 

Top Industries

By visitors reading reviews
Computer Software Company
17%
Financial Services Firm
8%
Manufacturing Company
7%
Government
7%
Computer Software Company
16%
Financial Services Firm
7%
Manufacturing Company
7%
Construction Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What do you like most about Microsoft Defender for Office 365?
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 indi...
What is your experience regarding pricing and costs for Microsoft Defender for Office 365?
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.
What needs improvement with Microsoft Defender for Office 365?
Microsoft Defender for Cloud Apps is a very good solution that allows you to use a single port or tool to control everything happening with your organization's different cloud applications. Configu...
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?
The tool can be challenging because it relies on rule-based configurations, especially for addressing impersonation threats. This approach requires setting up numerous rules to ensure filtering. It...
 

Also Known As

MS Defender for Office 365
Mimecast Email Security with Targeted Threat Protection
 

Overview

 

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group
Find out what your peers are saying about Microsoft Defender for Office 365 vs. Mimecast Email Security and other solutions. Updated: January 2024.
792,905 professionals have used our research since 2012.