Best Cisco Secure Email Alternatives ranked by AI · updated Aug 2026

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Cisco Secure Email is an enterprise email security service for blocking spam, malware, phishing, and data-exfiltration attempts. It combines reputation filtering, advanced threat analysis, outbreak intelligence, and policy enforcement for organizations with complex networks.

Developer: Cisco Price: Contact sales 🎯 cisco.com

🔒 Email Security cybersecurity phishing protection business email compromise

Top 6 Cisco Secure Email alternatives

Rspamd

Rspamd Project

Rspamd is an open-source, high-performance spam filtering system for mail servers and hosting providers. It combines statistical analysis, reputation data, antivirus integration,...

Pros

Faster and more resource-efficient than many traditional content filters
Strong Bayesian, reputation, DKIM, DMARC, and fuzzy-checking capabilities
Flexible Lua scripting and HTTP API support advanced mail workflows

Cons

More complex to configure than hosted spam-filtering services
Requires mail-server administration and ongoing rule tuning
Smaller ecosystem and less legacy documentation than SpamAssassin

Free, open source

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Websense Email Security

Forcepoint

Websense Email Security was an enterprise email security platform for filtering spam, malware, phishing, and other inbound and outbound email threats. The...

Pros

Provided centralized filtering for enterprise inbound and outbound email
Combined anti-spam, anti-malware, and data-loss prevention controls
Supported policy-based administration for large organizations

Cons

Websense branding has been replaced by Forcepoint
Legacy deployments may require migration or vendor support validation
Less cloud-native than newer email security platforms

N/A

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Libraesva Email Security Gateway

Libraesva

Libraesva Email Security Gateway is an enterprise email security platform that filters inbound and outbound messages for spam, malware, phishing, and data...

Pros

Strong phishing, malware, and business email compromise protection
Supports cloud, hybrid, and on-premises deployment models
Includes email continuity and archiving capabilities

Cons

Pricing is not publicly disclosed
Less widely adopted than Microsoft, Mimecast, or Proofpoint
Administration can require specialized email-security expertise

Quote-based

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Darktrace Antigena Email

Darktrace

Darktrace Email is an enterprise email security service for detecting phishing, business email compromise, malware, and account takeover. It uses behavioral analysis...

Pros

Behavioral detection can identify novel phishing and impersonation attacks
Automated response can contain or remediate suspicious messages
Works alongside existing email infrastructure and security tools

Cons

Pricing is not publicly listed and is typically enterprise-oriented
Behavioral models can require tuning to reduce false positives
Less native productivity-suite integration than Microsoft Defender

Contact sales

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Proofpoint Advanced Threat Protection

Proofpoint

Proofpoint Advanced Threat Protection is an enterprise email-security service that detects and blocks phishing, malware, ransomware, and other targeted attacks. It is...