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Microsoft Exchange Online Protection (EOP) vs Sublime Security 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:
 

ROI

Sentiment score
5.9
Microsoft Exchange Online Protection effectively enhances email security, productivity, and cost-efficiency compared to rivals like AppRiver and Trend.
Sentiment score
4.5
Sublime Security reduces security risks and costs, enhances efficiency, and streamlines email investigations, improving organizational operations.
Importantly, we didn’t need to hire any additional staff; we were able to absorb this responsibility using our existing team.
Manager Security Operations Center at a educational organization with 10,001+ employees
I estimate that we have improved our efficiency, especially for phishing campaigns where we can handle multiple similar emails together, which has reduced repetitive analyst work and improved our response time.
Soc Analyst at a manufacturing company with 10,001+ employees
I think the ROI for us is primarily in reduced security risk and reduced analyst time.
Technical Lead at a consultancy with 11-50 employees
 

Customer Service

Sentiment score
6.4
Microsoft Exchange Online Protection support receives mixed reviews, with response times varying based on issue complexity and service level.
Sentiment score
6.3
Sublime Security offers highly rated customer support with efficient responses, expert teams, and excellent communication channels for quick resolutions.
If I had to rate the support I received on a scale of ten, I would give it a ten because he went way beyond what was expected for me.
Business Process Manager/ Educational Technologist at a educational organization with 1,001-5,000 employees
Microsoft offers excellent 24/7 support.
System Administrator at Shubham housing finance
My team is able to get the help they need when necessary.
General Manager at Ambient iT
We were able to get in touch with the person who constructed the LLM and its agentic aspects relatively quickly to address our questions.
Manager Security Operations Center at a educational organization with 10,001+ employees
They're able to understand the context of an incident rather than just treating it as a generic support ticket.
Technical Lead at a consultancy with 11-50 employees
I would rate customer support ten out of ten.
Soc Analyst at a manufacturing company with 10,001+ employees
 

Scalability Issues

Sentiment score
7.6
Microsoft Exchange Online Protection efficiently scales from small businesses to large enterprises, offering seamless cloud migration and regular updates.
Sentiment score
7.1
Sublime Security is highly scalable and resource-efficient, effectively handling large email volumes across Microsoft 365 and Google Workspace.
Despite nearly doubling the number of mailboxes and adding significantly more detection rules, the service remains just as fast as it was when we first implemented it.
Manager Security Operations Center at a educational organization with 10,001+ employees
Its scalability is also good, as it can scale with the number of protected mailboxes or users, or as email volume grows, supporting enterprise development across Microsoft 365 or Google Workspace.
Soc Analyst at a manufacturing company with 10,001+ employees
We have a fairly large Microsoft 365 environment and haven't had any problems with the platform keeping up with our email volume.
Technical Lead at a consultancy with 11-50 employees
 

Stability Issues

Sentiment score
7.7
Microsoft Exchange Online Protection is reliable and stable, with rare security incidents, benefiting from good maintenance and occasional third-party support.
Sentiment score
8.7
Sublime Security offers stable, reliable email security with quick performance, efficient threat detection, and no downtime or crashes.
Sublime Security acted quickly; once Microsoft alerted Outlook about the incoming email, Sublime Security managed to pull it from the stream before it had a chance to appear in the user's inbox.
Manager Security Operations Center at a educational organization with 10,001+ employees
 

Room For Improvement

Microsoft Exchange Online Protection needs improved flexibility, security, user experience, intuitive interface, pricing, support, and integration with other platforms.
Sublime Security should enhance user onboarding, integration, customization, and reporting while addressing pricing and reducing false positives.
Improving the search process by allowing searches with different types of parameters and facilitating searches within emails would be advantageous.
General Manager at Ambient iT
The user interface of Microsoft Exchange Online Protection (EOP) has room for improvement.
Director at a tech services company with 11-50 employees
From an end-user point of view, I am quite happy with Microsoft Exchange Online Protection (EOP) because my favorite feature is the ease with which I can identify if an email is a phishing email or spam email.
Business Process Manager/ Educational Technologist at a educational organization with 1,001-5,000 employees
Often I have to prepare reports for our CEOs, and they want it in a less technical way, a simpler view of things such as threats blocked, incidents investigated, and overall risk reduction.
Technical Lead at a consultancy with 11-50 employees
While they do provide API-level access and web hooks, I believe more out-of-the-box integrations with SOAR platforms and SIEM tools would enhance Sublime's value.
Manager Security Operations Center at a educational organization with 10,001+ employees
One breach could potentially put a small company out of business, so having a tool such as this might save them from that fate.
Partner Account Manager at a wholesaler/distributor with 51-200 employees
 

Setup Cost

Microsoft Exchange Online Protection pricing is seen as generally high, but justified by security features and Microsoft's reputation.
Sublime Security's pricing is higher but justified by effective threat prevention, with competitive AWS Marketplace setup and licensing.
The pricing is reasonable.
General Manager at Ambient iT
Microsoft Exchange is more expensive compared to other services like Gmail.
System Administrator at Shubham housing finance
I find the price of Microsoft Exchange Online Protection (EOP) to be fairly reasonable, and I have no problems with it.
Director at a tech services company with 11-50 employees
I can also understand why some people might say it's expensive.
Technical Lead at a consultancy with 11-50 employees
It's competitive with its peers, especially for the number of mailboxes we have.
Manager Security Operations Center at a educational organization with 10,001+ employees
 

Valuable Features

Microsoft Exchange Online Protection offers robust security features including anti-spam, anti-phishing, malware protection, scalability, and seamless Windows integration.
Sublime Security offers advanced phishing detection, AI analysis, and automated threat responses, enhancing email security and reducing manual efforts.
We've benefited from the anti-phishing features of Microsoft Exchange Online Protection (EOP), as it has been quite accurate and has eliminated most of our phishing emails, making it really impressive.
Director at a tech services company with 11-50 employees
The security features provided by Microsoft are robust.
General Manager at Ambient iT
It offers more features and better security, making it the best option for corporate environments.
System Administrator at Shubham housing finance
This level of detail is essential for analysts and anyone conducting evaluations, as it helps them understand the specific circumstances of their environment.
Manager Security Operations Center at a educational organization with 10,001+ employees
It adds a smarter layer that catches anything missed by Microsoft 365 or Google Workspace protection.
Partner Account Manager at a wholesaler/distributor with 51-200 employees
The best features of Sublime Security are advanced phishing and BEC detection, campaign grouping, threat hunting, and automated remediation.
Soc Analyst at a manufacturing company with 10,001+ employees
 

Categories and Ranking

Microsoft Exchange Online P...
Ranking in Email Security
9th
Average Rating
8.2
Reviews Sentiment
6.6
Number of Reviews
42
Ranking in other categories
Anti-Malware Tools (13th)
Sublime Security
Ranking in Email Security
14th
Average Rating
9.0
Reviews Sentiment
6.5
Number of Reviews
7
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of October 2026, in the Email Security category, the mindshare of Microsoft Exchange Online Protection (EOP) is 3.0%, down from 5.1% compared to the previous year. The mindshare of Sublime Security is 1.1%, down from 1.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security Mindshare Distribution
ProductMindshare (%)
Microsoft Exchange Online Protection (EOP)3.0%
Sublime Security1.1%
Other95.9%
Email Security
 

Featured Reviews

NancyHartman - PeerSpot reviewer
Business Process Manager/ Educational Technologist at a educational organization with 1,001-5,000 employees
Layered email security has protected sensitive research and still flags phishing in real time
The valuable features of Microsoft Exchange Online Protection (EOP) include providing an additional layer of protection, as it builds on the basic Exchange level of security that allows us to get our work done. Another feature I appreciate is the ability to question things, as our Exchange server allows us to identify in real-time if an email is a phishing email or spam email. It really helps us identify risks, especially through our external exchanges via email or through our cloud-based platforms. Our Exchange system blocks any embedded AI from all our applications and products, so we cannot use embedded AI in our daily work from our official laptops because we have secure information. The system is quite locked down.
reviewer2891127 - PeerSpot reviewer
Technical Lead at a consultancy with 11-50 employees
Email defenses have reduced manual phishing work and now give clear visibility into threats
I'd say the best features Sublime Security offers are the threat detection and investigation capabilities, which are probably the most valuable part for us. I particularly appreciate the visibility into the email activity and the ability to investigate suspicious messages and understand why something was flagged. I'd say the protection against more sophisticated phishing and business email compromise attacks is also important. Those are difficult to deal with because they don't always contain obvious malware. The investigation capabilities of Sublime Security stand out because they surface themselves in a very nice, obvious way. So when we are investigating, they're just easy to spot and easy to identify. The UI is very clear for us, and overall it's just what we would expect. Regarding Sublime Security's AI capabilities, I think it's honestly pretty good. I haven't had any issues with either the governance side or the security side. I think Sublime Security has been very accurate. For us, it's certainly stopped a lot of the manual investigation that we often do for phishing emails or malicious emails. Occasionally, it does give us false positives, but that's just a five-minute review of something, so it still cuts a lot of time down.
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Top Industries

By visitors reading reviews
Financial Services Firm
11%
Comms Service Provider
9%
Manufacturing Company
9%
Government
7%
Outsourcing Company
11%
Computer Software Company
9%
Financial Services Firm
8%
Manufacturing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business23
Midsize Enterprise6
Large Enterprise13
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise5
Large Enterprise11
 

Questions from the Community

What needs improvement with Microsoft Exchange Online Protection?
From an end-user point of view, I am quite happy with Microsoft Exchange Online Protection (EOP) because my favorite feature is the ease with which I can identify if an email is a phishing email or...
What is your primary use case for Microsoft Exchange Online Protection?
Microsoft Exchange Online Protection (EOP) serves as the main use case for my company because, as a research company, we require a very high level of security. We use multiple authentication method...
What advice do you have for others considering Microsoft Exchange Online Protection?
My experience with Microsoft Exchange Online Protection (EOP) is from an end-user perspective, and I do not have admin management experience. I am not familiar with the Advanced Threat Protection f...
What is your experience regarding pricing and costs for Sublime Security?
Pricing for Sublime Security seems appropriate for an enterprise security product. It's not really the cheapest option, but it benefits us. The overall cost does need to be considered against the s...
What needs improvement with Sublime Security?
The product is powerful, but I suppose there are areas where someone new to the platform needs some time to understand all of the available functionality. It can be quite a lot as a new user to abs...
What is your primary use case for Sublime Security?
Our primary use case for Sublime Security is email security, so we use Sublime Security to protect Microsoft 365 email against phishing, business email compromise, any malicious links and attachmen...
 

Also Known As

Microsoft EOP, MS Exchange Online Protection
No data available
 

Overview

 

Sample Customers

Information Not Available
Snowflake, Spotify, Anduril, Elastic, Compass, Encompass Health, Zscaler, Ovo Energy, Personio, Beneteler 
Find out what your peers are saying about Microsoft Exchange Online Protection (EOP) vs. Sublime Security and other solutions. Updated: September 2026.
917,433 professionals have used our research since 2012.