Best Anti-Phishing Tools

Axur focuses on External Threat Protection (ETP) and brand protection by monitoring the digital landscape for brand abuse, data leaks, and fraudulent activities. The platform automates the detection and takedown of phishing sites, unauthorized apps, and leaked credentials across the deep, dark, and open web. It complements internal security controls by mitigating risks that originate outside the traditional network perimeter.

BrandShield is a Digital Risk Protection (DRP) and External Threat Management platform that secures brands against online fraud, impersonation, and phishing. It uses AI to monitor the web, social media, and app stores for brand misuse, fraudulent domains, and counterfeit activity. The platform provides automated takedown capabilities to remove malicious content, protecting company reputation and customer trust.

Most security stacks get unmanageably complex as your business grows. Coro consolidates endpoint, email, cloud, network, identity, data protection, and security awareness training into one unified platform.

Graphus is a cloud email security product focused on Microsoft 365 and Google Workspace tenants. It detects phishing, spoofing, business email compromise, account takeover, malware, and ransomware attempts, then quarantines suspicious mail and warns users before they interact with it. The product is positioned for organizations that want API-based deployment without MX record changes, mail rerouting, or agents, and for MSPs or IT teams that need automated inbox protection with minimal operational overhead. It is offered as an anti-phishing and email-borne threat defense layer rather than a full secure email gateway replacement.

GreatHorn is a cloud email security platform focused on detecting and remediating phishing, business email compromise, impersonation, credential theft, account takeover, malicious URLs, and payloads in Microsoft 365 and Google Workspace environments. It is positioned for enterprises that need post-delivery search-and-removal workflows, inbox-level remediation, and integration into broader security operations. GreatHorn is best suited for organizations that want to reduce manual phishing response across complex mail environments and connect email incidents to SOAR and SIEM tools.

Guardz is a unified cybersecurity platform that includes email security for MSP-managed SMB environments, with a focus on API-based mailbox protection, phishing/BEC/ransomware detection, and automated quarantine. In the email security scope, it scans user and shared mailboxes, flags suspicious messages and attachments, and supports sender/domain blocking and allowlisting. Guardz is best suited for MSPs that want email controls managed from the same console as broader identity and endpoint protections, rather than a standalone email gateway.

INKY is a cloud email security platform focused on phishing, impersonation, business email compromise, and data loss prevention for Microsoft 365 and other email environments. Its differentiator in the email security category is behavioral analysis combined with user-facing coaching: it renders messages visually, applies computer vision and machine learning, and adds inline warnings to help recipients make safer decisions. It is positioned for organizations and MSPs that want layered inbound protection and optional outbound controls without relying only on pattern-based filtering.

IRONSCALES is an AI-driven email security platform designed to detect and remediate advanced phishing, Business Email Compromise (BEC), and account takeover (ATO) attacks. It utilizes a hybrid approach combining machine learning algorithms with crowdsourced human intelligence to provide a decentralized self-learning system. The platform integrates via API with Microsoft 365 and Google Workspace, replacing or augmenting traditional SEGs with an Integrated Cloud Email Security (ICES) architecture.

MailGuard, a GlobalGuard company, is a world leader in email security, providing both Secure Email Gateway (SEG) and Integrated Cloud Email Security (ICES) protection that detects and blocks sophisticated, fast-moving email threats hours ahead of the market.

Microsoft Defender for Cloud is a multicloud CSPM platform that provides continuous security posture assessment across Azure, AWS, and GCP. It delivers agentless vulnerability scanning, misconfiguration detection, and compliance monitoring against industry benchmarks (CIS, NIST, ISO, PCI-DSS). The platform generates hardening recommendations ranked by risk and includes attack path analysis to identify exploitable chains. Defender for Cloud serves enterprises managing hybrid and multicloud infrastructure seeking unified posture visibility and compliance reporting.

N-able Mail Assure is a cloud-based email security gateway for MSPs and Microsoft 365 environments. In scope for email security, it filters inbound and outbound mail, blocks spam and email-borne threats, supports policy-based controls, and provides quarantine, archiving, and continuity functions through a web console. N-able positions it for service providers and IT teams that need centralized protection for multiple domains and tenants, plus message-level visibility and administrative reporting. Adjacent capabilities include a private portal for handling sensitive messages and Microsoft 365 add-ons, but the core product is email gateway protection.

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SlashNext is an email security vendor focused on stopping phishing, business email compromise, credential theft, and QR-code-based attacks before they reach users. Its cloud email security products use predictive detection techniques rather than relying only on signatures or delayed reputation feeds, and the company has been positioned as a strong specialist in advanced social-engineering defense. It is best suited for organizations that want protection for Microsoft 365 and other enterprise email environments against zero-hour email threats. SlashNext also sells adjacent messaging-security capabilities, but those are outside this profile scope.

Spambrella is the best email security and continuity solution to strengthen your business reputation, encrypt sensitive data, and meet regulatory requirements. We provide effective email protection services and real-time cyber threat detection while spreading user awareness among stakeholders.

Sublime Security is the adaptive, AI-powered cloud email security platform that combines best-in-class effectiveness with unprecedented visibility and control. The open platform allows security teams to have transparency and flexibility in their email environment to spend less time on email-originated incidents. Advanced teams can customize detections, threat hunt, extend Sublime into their SIEM or SOAR, and collaborate with other teams.

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