

Find out in this report how the two Email Security solutions compare in terms of features, pricing, service and support, easy of deployment, and ROI.
It has also decreased our time to detection and response by about 15 to 20 percent.
Overall, cost of owning and operating our system goes down.
It's hard to quantify the return on investment we've seen from Microsoft Defender for Office 365.
Importantly, we didn’t need to hire any additional staff; we were able to absorb this responsibility using our existing team.
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.
Over the past two years, there have been no critical problems.
we opened tickets, and they typically resolve them quickly.
With a subscription for Microsoft Defender for Office 365, it is an eight. Without it, it is a six.
We were able to get in touch with the person who constructed the LLM and its agentic aspects relatively quickly to address our questions.
I would rate customer support ten out of ten.
We have never faced scalability problems, and Microsoft manages it effectively.
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.
Microsoft Defender for Office 365 scales with the growing needs of my company well.
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.
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.
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.
I have not experienced any downtime, crashes, or performance issues because of Defender.
The solution is stable, as we have been using it for the past two years.
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.
The main area for improvement is simplifying the implementation and rollout process.
Microsoft could improve by offering recommendations for domain spoofing attacks, especially scenarios where DNS records like SPF, DKIM, and DMARC are not properly published.
There is a different console for different things; I just want one consolidated console.
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.
One breach could potentially put a small company out of business, so having a tool such as this might save them from that fate.
Sublime Security could be improved by enabling more integration, better customization of alerts, and more detailed reporting.
We've likely saved 30% of costs.
Money-wise, it is a part of the Office 365 suite, making it slightly more expensive compared to Trend Micro.
Microsoft is quite affordable with a lot of features available for any size organization.
It's competitive with its peers, especially for the number of mailboxes we have.
It ranks the threats and allows us to prioritize those hitting us the hardest, such as email threats.
It provides end-to-end visibility on email threats such as phishing, extending beyond Exchange Online Protection.
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.
This level of detail is essential for analysts and anyone conducting evaluations, as it helps them understand the specific circumstances of their environment.
It adds a smarter layer that catches anything missed by Microsoft 365 or Google Workspace protection.
The best features of Sublime Security are advanced phishing and BEC detection, campaign grouping, threat hunting, and automated remediation.
| Product | Mindshare (%) |
|---|---|
| Microsoft Defender for Office 365 | 5.2% |
| Sublime Security | 1.2% |
| Other | 93.6% |

| Company Size | Count |
|---|---|
| Small Business | 24 |
| Midsize Enterprise | 11 |
| Large Enterprise | 32 |
| Company Size | Count |
|---|---|
| Small Business | 8 |
| Midsize Enterprise | 5 |
| Large Enterprise | 10 |
Microsoft Defender for Office 365 offers real-time email security, enhancing threat detection through integration within the Microsoft ecosystem. Its user-friendly interface and central management streamline operations, providing robust protection against phishing, ransomware, and malware.
Defender for Office 365 is focused on efficiently securing email communication by safeguarding against phishing, malware, and spam threats. With its strong integration with other Microsoft services, it is tailored to improve endpoint security and identity protection. Its centralized management tools simplify threat prioritization, while the automated threat response capabilities ensure swift actions against potential risks. Organizations leverage its capabilities to efficiently manage their cybersecurity efforts, particularly in remote work environments, while maintaining a secure system across Office 365 applications and Azure-hosted services.
What are the key features?Implementations of Defender for Office 365 vary across industries, optimizing email security for sectors such as finance, healthcare, and education. In finance, it aids in protecting sensitive financial data from phishing and fraud. Healthcare benefits from secure communications, ensuring patient data privacy. Educational institutions use it to maintain secure virtual learning environments against cyber threats.
Sublime Security provides innovative email security solutions focusing on advanced threat detection and customization, designed to tackle complex security challenges in enterprise environments.
True to its name, Sublime Security delivers a robust platform for email security that empowers professionals with precision tools for threat hunting and detection. It stands out for its focus on customization, allowing users to tailor security protocols to specific threats, enhancing detection accuracy. The platform supports detailed analysis, enabling IT teams to dissect threats and respond swiftly. Despite its strengths, improvement areas include easing integration processes and expanding user documentation.
What features define Sublime Security?
What benefits or returns on investment should users consider?
Within the financial sector, Sublime Security is implemented to protect sensitive client data from phishing and malware attacks. In healthcare, it offers customized solutions for securing patient information against unauthorized access. The adaptability of its detection algorithms makes it valuable in diverse industry applications.
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