Best antispam filters for businesses

Microsoft Defender for Office 365 provides premium-tier, built-in security specifically for Microsoft 365 tenants. Its native integration and simple deployment make it an excellent baseline layer of protection.

Proofpoint is a long-established leader in enterprise email security, valued for its comprehensive features and deep threat intelligence. It provides robust defense against a wide array of sophisticated attacks, including BEC.

SpamTitan is highly effective at blocking spam and phishing emails, boasting a 99.9% spam detection rate. Its cloud-based nature, ease of management, and competitive pricing make it popular for SMBs and MSPs.

Barracuda Email Protection offers a robust, multi-layered defense against sophisticated email threats like phishing and ransomware. It is highly praised for its affordability and ease of administration, especially within Microsoft 365 environments.

Fortinet FortiMail offers robust protection against spam, malware, and phishing threats, addressing critical business challenges related to email-based attacks and compliance. It integrates well with other security frameworks.

Symantec Email Security.Cloud leverages Symantec's extensive global threat intelligence network to provide comprehensive protection. It offers cloud-based security against spam, malware, phishing, and targeted attacks.

Darktrace/Email utilizes AI to detect and respond to novel and sophisticated email threats, including those that bypass traditional defenses. It also manages outbound email traffic to reduce data leakage.

N-able Mail Assure offers robust spam filtering and advanced threat detection, with seamless integration into existing email infrastructure. Its comprehensive reporting and email continuity features make it a convenient solution for businesses.

Hornetsecurity boasts excellent detection rates with multi-layered spam filtering and high virus identification. It provides comprehensive safeguards against various email threats, including phishing and DDoS attacks.

Comodo Dome Antispam provides comprehensive email protection through real-time detection and filtering of spam, phishing, and malware. It leverages advanced machine learning to minimize false positives and enhance security.

Mimecast is a comprehensive, scalable cloud-based solution well-suited for businesses prioritizing compliance, retention, and data governance alongside threat protection. It offers strong defense against targeted attacks and impersonation.

Sophos Email Security leverages AI to defend against sophisticated email-based assaults, offering 99% spam protection. It integrates tightly with other Sophos products, making it ideal for existing Sophos users.

Abnormal Security utilizes advanced machine learning algorithms to provide cutting-edge protection against a wide range of email threats. It excels at safeguarding against phishing, malware, and ransomware.

SonicWall Email Security is an enterprise-grade solution offering comprehensive protection against spam, phishing, and malware. It provides advanced filtering and real-time reporting with flexible cloud or on-premise deployment options.