Effective business email security has become an increasingly critical priority for organizations of all sizes. As email remains the predominant communication and collaboration platform across industries, it also represents one of the most exploited threat vectors that cybercriminals regularly target through phishing, impersonation, and malware campaigns. Particularly given the massive shift to remote and hybrid work models over the last couple of years, securing email to protect sensitive data, intellectual property, customer information, and financial assets warrants robust solutions.
I outline the top 10 business email security platforms that provide core capabilities to defend against sophisticated threats while enabling seamless, productive communication. These solutions encompass a layered stack of threat prevention, detection, response and remediation functionalities across endpoints, networks and the cloud. As cyberattacks grow more advanced and personalized, machine learning and AI are leveraged for adaptive protection. Regular simulation, training and reporting empower security teams to optimize configurations.
Integrated threat intelligence feeds enable real-time blocking of known threats, while sandboxing and detonation chambers safely inspect suspicious content. Encryption, data loss prevention and authentication enforce data protection policies across inbound and outbound messages.
SpamTitan is an email security gateway that combines multiple techniques for blocking malware, phishing, impersonation, and spam at the network perimeter. Leveraging threat intelligence from 250,000 sensors, the platform achieves a 99.97% spam catch rate with near-zero false positives. AI-driven sandboxing inspects attachments, while impostor protection analyzes display names, domain names and sender patterns to detect spoofing. Advanced threat protection also identifies brand impersonation, typosquatting, and socially engineered content. SpamTitan integrates with Microsoft Office 365 for a layered inbound email security approach.
IRONSCALES applies AI-driven self-learning capabilities to protect against phishing, BEC, credential theft and account takeover. Behavioral analysis is used to build an understanding of each user’s communication patterns and relationships. This enables real-time detection of subtle impersonations and anomalies that signature-based tools may miss. Suspicious emails are rerouted to a personal quarantine for added analysis. IRONSCALES also provides immersive simulations and training content to continually test and educate users. Integration with Microsoft Graph enables enrichment of threat intelligence.
3. Trustifi Email Security
TrustifiEmail Security combines AI and machine learning with policy-based encryption to secure business communication. Dynamic risk analysis involving millions of data points enables real-time threat detection and prevention. Sensitive data types and content are identified to automate encryption across the email channel. Usage patterns are analyzed to detect compromised accounts and insider threats. Trustifi also enables revocation of sent encrypted emails, legal hold for e-discovery, and encryption exceptions to ensure workflows are maintained.
4. Abnormal Security
Abnormal Security leverages an AI-powered approach for protection against socially engineered email attacks across Office 365. An advanced identity engine modeled on human behavior builds an understanding of trusted relationships and communication norms for each organization. High-fidelity alerts drive automated incident response workflows when anomalies occur. Abnormal Security also enables digital fingerprinting of sensitive data to detect and control exfiltration attempts. Integration with Microsoft Defender and other platforms bolsters threat intelligence.
5. Libraesva ESG
Libraesva ESG delivers a full-stack email security solution encompassing gateway, mailbox and user protection. AI-driven behavioral analysis is combined with sandboxing, anti-phishing and other techniques to identify advanced threats. An integrated awareness training program helps sensitize users through simulated phishing campaigns. Libraesva ESG also enables email encryption with standards-based protocols, DKIM and DMARC authentication, time-of-click URL protection against fast fluxing, and adherence to data sovereignty requirements across regions.
6. Proofpoint Essentials
Proofpoint Essentials leverages AI and automation to block sophisticated email threats and enable quick response. Cloud-hosted sandboxes detonate attachments to reveal hidden threats missed by legacy defenses. Impersonation protection identifies spoofing attempts based on internal communication patterns. URL rewriting obscures links to avoid phishing. Automated alerts enable one-click remediation to remove suspicious messages from inboxes after delivery. Proofpoint Essentials also enforces inbound and outbound data loss prevention policies and encryption.
7. Mimecast Secure Email Gateway
Mimecast’s AI-enriched email security platform protects against phishing, ransomware, impersonation and targeted attacks. URL sandboxing, attachment protection and time-of-click scanning defend endpoints from weaponized links and files. Impersonation Protect and Domain Spoofing prevent spoofing, while Decluttering removes unwanted bulk mail. Bi-directional DMARC authentication blocks domain spoofing. Mimecast Centralized Policy Control aligns configurations across security services including email gateway, web security and data loss prevention.
8. Avanan By Check Point Software Technologies
Avanan Cloud Email Security protects access across leading webmail platforms including Office 365 and G Suite via an API-based approach. AI and machine learning drive threat prevention and detection without routing email flows through external gateways that impact deliverability. Core controls include cross-platform phishing identification, safe links analysis, impersonation blocking, sandboxing and antivirus scanning. Avanan also provides incident response capabilities like auto-takedowns of malicious pages and sending post-delivery notifications.
9. Barracuda Essentials
Barracuda Essentials Email Security combines multi-layer spam blocking, virus scanning, sandboxing and URL click protection powered by AI. Link following identifies cloaked URLs avoiding detection at delivery. DMARC authentication and advanced spoofing guards thwart business email compromise. Barracuda Essentials also automatically remediates email threats post-delivery using insights from Microsoft Defender and other sources. Just-in-time training helps users identify and report suspicious messages. Email encryption, data loss prevention and archiving enforce compliance requirements.
10. Cisco Secure Email
Cisco Secure Email and Web Manager delivers a cloud-native platform to protect Office 365 email from phishing, business email compromise and data loss. AI-powered Safe Links analyze URLs at time-of-click across devices. Automated remediation removes detected threats post-delivery. User reporting feeds detections back to improve accuracy. Cisco Advanced Malware Protection (AMP) scrutinizes attachments, while anti-phishing identifies spoofed domains. Data loss prevention policies control sensitive data sharing. Secure Email also integrates with Cisco Secure Endpoint and Umbrella to extend protections.