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Cisco Secure Email Threat Defense Reviews

Vendor: Cisco
4.0 out of 5
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What is Cisco Secure Email Threat Defense?

Cisco Secure Email Threat Defense offers robust email security with features like east-west traffic visibility and seamless SaaS deployment. It enhances cloud email protection by integrating Threat Grid sandboxing and AMP for malware defense, supported by Cisco Talos threat intelligence.

Get the Cisco Secure Email Threat Defense Buyer's Guide and find out what your peers are saying about Cisco Secure Email Threat Defense, Microsoft Defender for Office 365, Proofpoint Email Protection and more!
Cisco Secure Email Threat Defense is the #19 ranked solution in top Email Security solutions. PeerSpot users give Cisco Secure Email Threat Defense an average rating of 8.0 out of 10. Cisco Secure Email Threat Defense is most commonly compared to Microsoft Defender for Office 365: Cisco Secure Email Threat Defense vs Microsoft Defender for Office 365. Cisco Secure Email Threat Defense is popular among the large enterprise segment, accounting for 44% of users researching this solution on PeerSpot. The top industry researching this solution are professionals from a marketing services firm, accounting for 12% of all views.
Buyer's Guide
Cisco Secure Email Threat Defense
April 2026
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Cisco Secure Email Threat Defense mindshare

As of April 2026, the mindshare of Cisco Secure Email Threat Defense in the Email Security category stands at 1.1%, up from 1.1% compared to the previous year, according to calculations based on PeerSpot user engagement data.
Email Security Mindshare Distribution
ProductMindshare (%)
Cisco Secure Email Threat Defense1.1%
Proofpoint Email Protection7.3%
Microsoft Defender for Office 3657.3%
Other84.3%
Email Security

PeerResearch reports based on Cisco Secure Email Threat Defense reviews

TypeTitleDate
CategoryEmail SecurityApr 28, 2026Download
ProductReviews, tips, and advice from real usersApr 28, 2026Download
ComparisonCisco Secure Email Threat Defense vs Proofpoint Email ProtectionApr 28, 2026Download
ComparisonCisco Secure Email Threat Defense vs Microsoft Defender for Office 365Apr 28, 2026Download
ComparisonCisco Secure Email Threat Defense vs Check Point Email Security (formerly Harmony Email & Collaboration)Apr 28, 2026Download
Suggested products
TitleRatingMindshareRecommending
Microsoft Defender for Office 3654.27.3%96%63 interviewsAdd to research
Proofpoint Email Protection4.27.3%96%98 interviewsAdd to research
 
 
Key learnings from peers

Valuable Features

Cisco Secure Email Threat Defense offers valuable features like east-west email traffic visibility, seamless integration with Cisco's threat intelligence, and advanced malware protection with Threat Grid. Users find the platform intuitive and user-friendly without needing extensive training. Its robust spam filtering, comprehensive threat mechanisms through Talos, and anti-spam capabilities are highly effective. Although analytics and reporting need improvement, its flexible graymail user management and behavioral analysis provide enhanced security against evolving threats.
  • "If you compare Cisco Secure Email Cloud Mailbox with the competition, in the competition you have to have one or two solutions together to address the customer's requirement, whereas Cisco Secure Email Cloud Mailbox is addressing everything, such as web domain and email protection."
  • "I would say it's very comprehensive, with multiple antivirus OEMs, virus encrypt features, encryption, and more."
  • "Cisco's technical support is very good."

Room for Improvement

Cisco Secure Email Threat Defense could improve integration with more tools and platforms, as well as enhance context and reporting accessibility. Search functionality and false positives require refinement. The need for better behavioral analysis, threat identification, and advanced phishing features is apparent. Modernization of controls and customization of features should be prioritized alongside a more streamlined management system. Considerations for a lower price, monthly billing, and faster support are also recommended.
  • "Cisco Secure Email Cloud Mailbox can improve by adding advanced phishing, then the solution would become the best in the market."
  • "Customers will benefit greatly from monthly billing because the majority of customers today use the cloud, be it Office 365, or Google Cloud."
  • "I wouldn't recommend Cisco to others because I think Fortinet is better."

ROI

Users reported significant cost savings and increased productivity due to the effective protection against email threats. The solution was praised for its ability to prevent phishing attacks, malware infections, and data breaches, resulting in improved security and reduced financial losses. 

Additionally, users appreciated the ease of use and seamless integration with existing email systems, which further enhanced the overall return on investment.

Pricing

Cisco Secure Email Threat Defense pricing is considered high compared to competitors like Proofpoint, Sophos, and Trend Micro. It is generally based on the number of user mailboxes and comes with additional support costs. While customers acknowledge its premium pricing, they justify it due to the robust feature set and Cisco's comprehensive support. Organizations using a fully Cisco setup find value, but others might find it more cost-effective to integrate Microsoft 365 and additional tools.
  • "The solution’s pricing is manageable."
  • "It is expensive compared to other vendors."
  • "Cisco Secure Email Cloud Mailbox does not have any competition with Sophos, Trend Micro, or other vendors of the world. However, there is a pricing premium for the solution. One has to look at it from that angle that while they are buying Cisco, there will be a premium, and Cisco justifies that premium value. That's why they're charging a high price."

Popular Use Cases

Cisco Secure Email Threat Defense primarily serves as a gateway for email traffic, offering email protection and security against threats like business email compromise and phishing. It detects malicious content, provides fast remediation times, and ensures email integrity. Users leverage it alongside Microsoft 365 for an extra layer of defense, focusing on spam filtering, malware detection, compliance, and email management. Organizations deploy it in the cloud, either privately or publicly, for enhanced email security.

Service and Support

Cisco Secure Email Threat Defense users often praise its customer service and support. Technical assistance is described as responsive and helpful, with quick query responses. Although some encountered issues like false positives, users found support effective in resolving them. Many appreciate the ease of implementation, rarely needing further aid. The support quality is highly rated, with scores between six and nine out of ten. The infrastructure and service coverage, especially in regions like India and Singapore, are appreciated.

Deployment

Users describe Cisco Secure Email Threat Defense's initial setup as easy and simple. They note that deployments can take as little as five minutes to a day. Most agree the process is straightforward if permissions are in place, although some mention concerns about needing extensive rights. While some face challenges based on deployment size and approach, many find it manageable if adequately trained, adaptable, and understanding both infrastructure and mail system operations.

Scalability

Cisco Secure Email Threat Defense demonstrates strong scalability for both large and small organizations. Users note its ease of scaling as a cloud-based service, effectively accommodating increased mailboxes and users. Despite occasional complexities with adding new signatures, the service efficiently handles large numbers of emails and provides consistent scalability across isolated servers. The capability for adjustment according to demand and its secure infrastructure contribute positively to its scalable performance.

Stability

Cisco Secure Email Threat Defense exhibits remarkable stability according to multiple sources. It operates reliably with no recurring issues or dedicated maintenance needs. Users consistently find it dependable, noting the absence of bugs, glitches, or performance disruptions. The service performs as expected without crashes or freezes, maintaining robust operational performance. It has yet to cause concern for users, and its performance stability rates high, addressing evolving customer requirements effectively.
These insights are based on the in-depth reviews provided by peers to help you make a better buying decision.
Download our Cisco Secure Email Threat Defense Buyer's Guide for additional reliable information.

Review data by company size

By reviewers
Company SizeCount
Small Business4
Midsize Enterprise5
Large Enterprise5
By reviewers
By visitors reading reviews
Company SizeCount
Small Business71
Midsize Enterprise21
Large Enterprise73
By visitors reading reviews

Top industries

By visitors reading reviews
Marketing Services Firm
12%
Manufacturing Company
8%
Healthcare Company
7%
Computer Software Company
7%
Construction Company
7%
Government
7%
Comms Service Provider
6%
Financial Services Firm
6%
Media Company
5%
University
4%
Performing Arts
4%
Recreational Facilities/Services Company
4%
Outsourcing Company
2%
Non Profit
2%
Insurance Company
2%
Pharma/Biotech Company
2%
Real Estate/Law Firm
2%
Retailer
2%
Logistics Company
2%
Educational Organization
2%
Energy/Utilities Company
1%
Museum Or Institution
1%
Consumer Goods Company
1%
Religious Institution
1%
Legal Firm
1%
Aerospace/Defense Firm
1%

Compare Cisco Secure Email Threat Defense with alternative products

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Learn more about Cisco Secure Email Threat Defense

Enhancing email security for Microsoft 365 and cloud emails, Cisco Secure Email Threat Defense acts as an email gateway, blocking phishing, malware, and business email compromise. Users benefit from a centralized management console, efficient graymail administration, and strong filtering capabilities. Despite its strengths, it requires improvements in integration, spam detection accuracy, and enhances phishing protection.

What are the most important features of Cisco Secure Email Threat Defense?
  • East-West Traffic Visibility: Offers insight into email tenant interactions.
  • SaaS Application Deployment: Simplifies deployment processes.
  • Threat Grid Sandboxing: Provides advanced malware protection.
  • AMP Integration: Enhances malware defense capabilities.
  • Anti-Spam and Antivirus: Powered by Cisco Talos threat intelligence.
  • Cloud Mailbox Features: Includes robust email filtering and management.
What benefits or ROI should be evaluated in reviews?
  • Enhanced Security: Provides protection against advanced threats.
  • Operational Efficiency: Reduces reliance on help desk services.
  • User-Friendly Management: Streamlines email administration tasks.
  • Improved Email Filtering: Ensures effective threat blocking.

Cisco Secure Email Threat Defense is highly applicable in industries requiring stringent data protection, such as finance and healthcare. It serves cloud-based environments by closely monitoring email activity to prevent unauthorized access and breaches. Tailored deployment options cater to both on-premise and cloud architectures, allowing flexible integration in existing workflows.

Cisco Secure Email Threat Defense was previously known as Cisco Secure Email Cloud Mailbox, Cisco CMD, Cisco Cloud Mailbox Defense.

Cisco Secure Email Threat Defense customers

Luiss University, Lone Star College, T-Systems, Magyar Telekom

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Product Categories

Product Categories
Email Security

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Cisco Secure Email Threat Defense Reviews Summary
Author infoRatingReview Summary
Principal Cyber Prevent and Defense Engineer at a comms service provider with 1,001-5,000 employees3.5I use Cisco Secure Email Threat Defense for advanced email threats like phishing. Its clawback feature is effective, but it lacks in analytics and integration. Despite false positives, it offers good value with a 65% ROI.
Senior Cybersecurity Engineer at a financial services firm with 11-50 employees3.5I've used Cisco Secure Email Threat Defense for years; it's powerful and flexible but complex to set up and maintain. While effective with threat detection and compliance, backend controls and pricing could be more user-friendly and competitive.
Enginner at Millennium Information Technologies4.0I found Cisco Secure Email Threat Defense effective for threat analytics and automation, though it needs improvements like IP restrictions and better log support. Setup was quick, support is strong, and I’d rate it 8 out of 10.
Principal Consulting Engineer, Founder, Own at Jolly Security Inc4.0I use Cisco Secure Email Threat Defense as the core email gateway for my domain, offering protection and threat intelligence. While the physical appliance is discontinued, slight improvements in customization and cloud features would enhance its modernity.
IT Professional at a construction company with 1,001-5,000 employees3.5We use Cisco Secure Email Threat Defense for email security, finding it robust and reliable with high protection against threats, particularly excelling in file analysis services. However, Cisco's broad focus has slightly shifted its attention from this product.
Presales Consultant - Cybersecurity at a computer software company with 201-500 employees2.5I use Cisco Secure Email Threat Defense primarily for email security and spam filtering with Microsoft Office 365. Its most valuable feature is the powerful cloud-based Talos threat mechanism, though improvements are needed in cybersecurity.
Senior Consultant at Velocis Systems5.0I find this email security solution very easy to deploy and use, with excellent stability and support. While it is a bit expensive, its competitive intelligence and reliability make it a 10/10 choice for email protection.
IT Professional at a construction company with 1,001-5,000 employees4.0I highly recommend this stable, scalable email security solution for its excellent sandboxing and malware protection, which I find superior to Microsoft Defender. Setup was simple, though I wish pricing was lower. I rate it 8/10.