Microsoft Exchange Online Protection (EOP) vs Mimecast Email Security comparison


Comparison Buyer's Guide

Executive SummaryUpdated on Jan 4, 2023

Categories and Ranking

Microsoft Exchange Online P...
Average Rating
Number of Reviews
Ranking in other categories
Email Security (3rd), Anti-Malware Tools (11th)
Mimecast Email Security
Average Rating
Number of Reviews
Ranking in other categories
Office 365 Protection (5th), Secure Email Gateway (SEG) (5th)

Mindshare comparison

As of June 2024, in the Anti-Malware Tools category, the mindshare of Microsoft Exchange Online Protection (EOP) is 5.6%, up from 3.1% compared to the previous year. The mindshare of Mimecast Email Security is 1.1%, down from 2.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Anti-Malware Tools
Unique Categories:
Email Security
Office 365 Protection

Featured Reviews

Nov 22, 2022
Offers valuable alert features
In my experience, everyone is using Azure or solutions from Microsoft. Word, Excel, and Outlook are present for a majority of companies. There is very little on the Google platform for email. The solution's discussion is more about budget and whether you are going to choose the on-premises or the cloud version. Microsoft is huge and a top-three vendor that really only competes with AWS and maybe Oracle. Certain features like scalability really are not relevant because the company's reputation is more than enough. Age in the market and investments in security are more important. You can rest assured that Microsoft has a particular team dedicated to each feature or issue. They are always improving and always delivering. Certain features of the solution will be valuable based on your role. For example, I am part of the security team so threat management is interesting to me. An an engineer or email team might be more interested in policies, configuration, or the administrative exchange. Nothing is perfect but the solution is very good. When you don't have opponents, it is easier to achieve a good rating. I rate the solution a nine out of ten.
Todd Blake - PeerSpot reviewer
May 9, 2023
Great for specialized use cases and able to expand but needs a better user interface
The interface needs improvement. If I'm looking at the administration panel right now, I can track messages. I can see what was accepted. I can see what's held. I can see what's rejected. I can see what's bounced. I can see delivery. I can see processing. However, it's all seven different things, and that's just silly. Also, if something's held and shouldn't be, I can release it, yet I can't add it straight to an allowed list from there. I have to go to a whole separate section, create a policy, update the policy, and add the email address, whereas in our prior product that we used to use, called AppRiver, if mail came in and it should be white-listed or allowed, you would just click the little box and say always allow, and it would just add it straight to the appropriate filter to allow it. The way we have to do it in this product is very convoluted. On the back end, there are ten different places to check for things before you finally figure out the right spot. I'd like to have better support from the product in the future. I have noted that support has gotten worse over time.

Quotes from Members

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


"It is easy to configure, easy to use, easy to add exclusions, easy to track, and easy to add anything else if you want."
"It is an easy solution."
"Microsoft Exchange Online Protection has features like DLP (data loss protection), Safe Attachment, and Safe Links."
"With Microsoft Exchange Online Protection, if malware is attached to a mailer, it's very easy to go into the incident alert and find out what's happening with that identity and the mail."
"I like the product's ZAP feature."
"We like the holding facility that is available for potentially suspicious URL's. This allows a real-time review to be performed before the email reaches a users inbox."
"It offers great security against malware and other threats."
"What I like most about Microsoft Exchange Online Protection is its integration with Windows, so we have one central view for all alerts and incidents."
"It does a good job for us, and its admin console is easy to use."
"The initial setup is very straightforward."
"Its administration console is very easy to use. The administration console is absolutely important because you interact with the platform through it."
"It offers an easy initial setup."
"Due to our specialized use case, that HIPAA dictionary really comes in handy."
"The solution is scalable."
"We like the content filtering and secure messaging features."
"The piece that is most valuable from the Mimecast standpoint will be the sandboxing feature."


"Our company faces difficulty with Microsoft Exchange Online Protection (EOP) because it's too big, clunky, and difficult for a small client to implement quickly and easily."
"The solution needs to improve its backup."
"The security features could be better."
"I think the implementation could be more streamlined."
"They should specify the difference between Defender for Office 365 and Exchange Online Protection."
"I would like to get reports about vulnerable connections from our clients with information about domains, public IPs, etc. That would be highly useful."
"Not all settings can be configured automatically and most still require manual configuration. However, there is an automation tool available that can be used to input all the configurations either as a script or a tool it would be helpful."
"Microsoft 365 Defender and EOP policies are stable with the proper license. However, with the basic policy, it's hard to say it's stable due to configuration limitations."
"The feature that should be included is to remove the block on the encrypted files."
"The reaction time between a new threat being identified and Mimecast picking it up needs to be narrowed a bit."
"We have subscribed to an archival service, and yet, when we have to get our data out, we have to pay a fee to get our own data. They charge an extraction fee."
"They could provide a unified licensing model, including all the security features."
"Its pricing can be improved. It is a bit expensive."
"The installation is not so straightforward."
"As a user, the user interface of the management console could be upgraded, for example."
"I did have a problem with Mimecast. That is why I was looking for an alternative solution because their sender IP address gets poorly rated by Microsoft."

Pricing and Cost Advice

"The solution should reduce the cost."
"The solution is expensive but is backed by Microsoft's reputation."
"The pricing of the solution is reasonable."
"The solution is priced high and could be less expensive compared to other solutions."
"The pricing for the solution depends on what you are trying to achieve with the use of the product, but I know that it is not a cheaply priced product. Yearly payments have to be made towards the licensing fees of the solution."
"Microsoft Exchange Online Protection's pricing is a little bit more because its price has recently increased."
"It is a low-price solution."
"The price of Microsoft Exchange Online Protection is reasonable."
"There are additional costs beyond the standard licensing fee."
"We pay monthly fees to our provider."
"For what it is, the product is overpriced."
"On a scale of one to ten, where one is cheap, and ten is expensive, I rate the pricing a ten."
"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."
"The licensing costs are per-user for the product that you get with them."
"The product has good pricing in terms of return on investment."
"The customers can select the license packages as per their requirements."
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Top Industries

By visitors reading reviews
Computer Software Company
Financial Services Firm
Manufacturing Company
Computer Software Company
Financial Services Firm
Manufacturing Company
Construction Company

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business

Questions from the Community

What do you like most about Microsoft Exchange Online Protection?
The initial setup was easy. The configuration process is very straightforward.
What needs improvement with Microsoft Exchange Online Protection?
We face challenges with reporting features and the lack of a proper dashboard in Microsoft's portal. There's no graphical interface, which other products offer. The reporting features need improvem...
What is your primary use case for Microsoft Exchange Online Protection?
The main use case is to block suspicious links in emails. However, some functionalities like SIPP attachment are not available in the basic EOP. Alos, complete phishing protection is also not avail...
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.

Also Known As

Microsoft EOP, MS Exchange Online Protection
Mimecast Email Security with Targeted Threat Protection



Sample Customers

Information Not Available
Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group
Find out what your peers are saying about Microsoft Exchange Online Protection (EOP) vs. Mimecast Email Security and other solutions. Updated: January 2024.
787,817 professionals have used our research since 2012.