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Email Security

Email Security Reviews and Ratings

What is Email Security?

Gartner defines an email security solution as a product that secures email infrastructure. Its primary purpose is to protect against malicious messages (phishing, social engineering, malware) or unsolicited messages (spam, marketing). Other functions include email data protection; domain-based message authentication, reporting and conformance (DMARC); investigation; and remediation through a dedicated console. Email security solutions may also support nonemail collaboration tools, such as those for document management and instant messaging.

Email security tools protect an organization’s email from spam, phishing, malware attacks, account takeover and data loss. They may provide capabilities for data loss prevention, encryption, domain authentication and security education, as well as advanced protections against business email compromise. Email security platforms give cybersecurity teams visibility into email-related security incidents, support investigation and automated remediation, and enable management of both inbound and outbound email delivery. Email security solutions often integrate with other network, identity and endpoint security controls, and may also support collaboration tools and email relay capabilities.

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IRONSCALES Email Security Platform
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Sophos Email
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Darktrace / EMAIL
For North America
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Cisco Secure Email Threat Defense
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Forcepoint Email Security
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Check Point Harmony Email & Collaboration
Integration & Deployment
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Abnormal Behavior Platform
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Darktrace / EMAIL
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IRONSCALES Email Security Platform

Product Listings

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Logo of Proofpoint Threat Protection

Proofpoint Threat Protection

By Proofpoint

4.6
(1385 Ratings)

Proofpoint Collaboration Security tackles multichannel, multistage attacks with 99.999% detection accuracy. It identifies and remediates advanced email threats including BEC, ransomware, phishing, ATO, and exec impersonations. The solution blocks threats across email and other digital communication and collaboration platforms, i.e. MS Teams, WhatsApp, Slack, LinkedIn, OneDrive, protecting users anywhere they work, on any device. Customers get protection against both internal and supplier account compromise, and strengthens human resilience against emerging threats. With Proofpoint’s Collaboration Security, customers ensure that interactions with business partners, suppliers, and even AI agents remain trusted and secure.

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Logo of Check Point Harmony Email & Collaboration

Check Point Harmony Email & Collaboration

By Check Point Software Technologies

4.7
(937 Ratings)

Avanan, a Check Point Company, is a full-fledged email security provider designed to help companies of all sizes, in all industries, protect against phishing, malware, ransomware, business email compromise, supply chain attacks and more. Leveraging the power of Check Point's ThreatCloud, Avanan connects via API and prevents malicious email from reaching the inboxes. In addition, Avanan helps guard against attacks in all lines of business communication, including Slack or Teams. Companies use Avanan to keep their business, people and data safe from cyberattacks.

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Logo of Mimecast Advanced Email Security

Mimecast Advanced Email Security

By Mimecast

4.5
(612 Ratings)

Mimecast Advanced Email Security is a software designed to protect organizations from email-based threats by providing threat detection, spam filtering, and advanced malware protection. The software leverages multiple detection engines to identify threats such as phishing, spear-phishing, impersonation attempts, and malicious attachments. Mimecast Advanced Email Security also includes data leak prevention and content control features, allowing organizations to reduce risks associated with confidential data loss and unauthorized sharing of sensitive information via email. The software integrates with existing email platforms and provides administrators with tools for policy management, reporting, and incident response. By addressing email-borne risks, the software helps organizations maintain the integrity and security of their email communications and supports compliance with security standards.

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Logo of Barracuda Email Protection

Barracuda Email Protection

By Barracuda

4.6
(437 Ratings)

Barracuda Email Protection delivers AI-powered security to keep your organization’s email safe from phishing, ransomware, and other advanced threats. It combines gateway filtering, inbox defense, automated incident response, and data protection into one easy-to-use solution.

Barracuda Email Protection blocks spam and malware before they reach users and automatically removes malicious emails after delivery. Encryption, archiving, and data loss prevention support compliance, while advanced monitoring stops account takeover and impersonation. With Barracuda Email Protection, organizations gain peace of mind knowing their email systems are protected, compliant, and resilient, allowing teams to focus on work, not threats.

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Logo of Sophos Email

Sophos Email

By Sophos

4.8
(351 Ratings)

Sophos Email is a software designed to offer email security by filtering incoming and outgoing messages to protect organizations from malware, phishing, spam, and unwanted content. The software uses advanced threat detection techniques and machine learning to identify and block suspicious email threats before they reach user inboxes. It provides encryption to safeguard sensitive information and ensures compliance with data protection policies. The software integrates with various email platforms and offers real-time monitoring and reporting to help administrators manage policies and respond to incidents efficiently. Its primary goal is to reduce the risk of email-borne attacks and maintain secure email communication for businesses.

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Logo of Abnormal Behavior Platform

Abnormal Behavior Platform

By Abnormal AI

4.8
(348 Ratings)
customers choice 2025

Abnormal Human Behavior AI Platform is a software designed to detect and analyze anomalous patterns in human interactions within digital environments. The software utilizes artificial intelligence and machine learning models to identify behaviors that deviate from typical user activity, with a focus on protecting organizations from potential threats such as email-based attacks and social engineering. By continuously monitoring communication channels, the software aims to flag suspicious actions and provide insights to security teams. The software addresses the business problem of securing enterprise environments against sophisticated cyber threats that often bypass traditional security measures, helping organizations to mitigate risks associated with compromised accounts and unauthorized access.

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Darktrace / EMAIL

By Darktrace

4.8
(345 Ratings)
customers choice 2025

Darktrace EMAIL is a software designed to protect organizations from advanced email threats by utilizing artificial intelligence to detect and respond to malicious emails, phishing attempts, and account takeovers. The software analyzes inbound, outbound, and internal emails to identify unusual patterns and suspicious content, adapting its detection methods based on evolving threats. It integrates with existing email systems and automates responses, helping organizations manage email security risks with minimal disruption to users. Darktrace EMAIL addresses the business problem of protecting sensitive data and communication channels from targeted attacks that bypass traditional security measures, aiming to reduce the threat posed by compromised accounts and malicious attachments.

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Logo of KnowBe4 Cloud Email Security

KnowBe4 Cloud Email Security

By KnowBe4

4.6
(305 Ratings)
customers choice 2025

KnowBe4 Cloud Email Security is a software designed to help organizations defend against a range of email-based threats, including phishing, malware, and spam. The software leverages machine learning and behavioral analysis to detect suspicious emails and prevent harmful content from reaching user inboxes. It provides centralized management, real-time reporting, and integrates with existing email platforms to enable administrators to monitor and configure security policies effectively. The software addresses the business problem of safeguarding sensitive information and business processes from email-driven cyberattacks by filtering incoming messages and offering automated remediation to reduce risk and enhance email security posture.

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Logo of FortiMail

FortiMail

By Fortinet

4.8
(278 Ratings)

FortiMail is an email security software that provides protection against spam, malware, and phishing threats for organizations. The software offers features such as advanced threat detection, data loss prevention, and message encryption to safeguard sensitive communications. It supports inbound and outbound filtering, quarantining suspicious messages, and integrating with other security frameworks. FortiMail addresses business challenges related to email-based attacks and compliance requirements by delivering solutions for secure messaging and threat mitigation. The software can be deployed on-premises, in virtual environments, or in the cloud to accommodate different infrastructure needs. FortiMail is designed to help organizations maintain email system integrity and protect confidential information.

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Logo of Trend Micro Cloud App Security

Trend Micro Cloud App Security

By Trend Micro

4.7
(241 Ratings)

Trend Micro Cloud App Security is a software designed to enhance protection for cloud-based email and collaboration services by providing advanced threat detection and data loss prevention functionalities. The software integrates with platforms such as Microsoft 365 and Google Workspace to analyze inbound and outbound communications for malware, phishing attempts, and sensitive data exposures. It applies machine learning, sandbox analysis, and anti-phishing technologies to assess links, attachments, and files in real time. The software helps organizations address security risks and compliance requirements by monitoring content and providing policy enforcement, reporting, and automated remediation capabilities without altering user workflows.

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Logo of Cisco Secure Email Threat Defense

Cisco Secure Email Threat Defense

By Cisco Systems

4.6
(239 Ratings)

Cisco Secure Email is a software that provides email security by detecting and blocking threats such as phishing, malware, ransomware and business email compromise. The software offers protection through threat intelligence, advanced filtering, data loss prevention and encryption capabilities to help secure inbound and outbound email communications. It supports policy management, reporting and integration with security ecosystems to streamline administrative tasks and enhance visibility into email threats. Cisco Secure Email addresses the business challenge of safeguarding sensitive information, maintaining regulatory compliance and reducing the risk associated with email-borne attacks.

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Logo of Microsoft Defender for Office 365

Microsoft Defender for Office 365

By Microsoft

4.4
(212 Ratings)

Microsoft Defender for Office 365 is a software designed to help organizations protect their email and collaboration tools within Office 365 from various cyber threats such as phishing, malware, and ransomware. The software provides advanced threat protection by analyzing email content, links, and attachments to detect and prevent potential attacks. It offers automated investigation and response capabilities to identify and remediate threats quickly. The software supports safe attachments and links, anti-phishing policies, and real-time reporting, enabling organizations to safeguard sensitive information, maintain compliance, and reduce risks associated with email and collaboration platform usage.

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Logo of IRONSCALES Email Security Platform

IRONSCALES Email Security Platform

By IRONSCALES

4.7
(208 Ratings)

IRONSCALES is a cloud-native email security platform built to help enterprises and MSPs close critical gaps in their defenses. It delivers mailbox-level threat detection, autonomous remediation, and integrated user training. The platform combines artificial intelligence and human insights that continuously learn from user behavior, message context, and analyst feedback to identify threats such as BEC, deepfakes, impersonation, and advanced phishing attacks. Designed for rapid deployment via API, IRONSCALES integrates with existing security stacks without requiring MX record changes. Its comprehensive capabilities also include phishing simulations, security awareness training, DMARC management, Deepfake Live Protection, and generative AI tools to reduce risk, improve SOC efficiency, and support a proactive security culture.

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Logo of Trend Vision One - Email and Collaboration Security

Trend Vision One - Email and Collaboration Security

By Trend Micro

4.7
(134 Ratings)

Trend Vision One - Email and Collaboration Security is a software designed to protect organizations from email-borne threats and risks associated with collaboration tools. The software offers advanced threat detection, anti-phishing, and anti-malware capabilities specifically aimed at email platforms and services such as Microsoft 365 and Google Workspace. It provides real-time scanning and analysis of incoming communications, monitors for malicious attachments and links, and helps identify and block targeted attacks like business email compromise and impersonation. The software integrates with cloud-based collaboration environments to ensure continuous monitoring and reporting, supporting compliance needs and organizational data security policies by helping to prevent unauthorized access, data leaks, and the spread of ransomware or other malicious software through email and shared files.

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Logo of Adaptive Email DLP

Adaptive Email DLP

By Proofpoint

4.7
(131 Ratings)

Adaptive Email DLP is designed to automatically detect and prevent misdirected emails and exfiltration of sensitive data to personal accounts by augmenting rules-based DLP with behavioral AI.

The software installs in minutes and begins a historical analysis to map normal communication patterns, topics and relationships, creating a benchmark for each user.

By analyzing 12+ months of email data and learning employees’ normal email sending behaviors, relationships, and handling of sensitive data, Adaptive Email DLP detects when anomalous email behavior occurs.

When an anomaly suggests a misdirected email, mismatched file or data exfiltration event is occurring, the user is shown a contextual warning message in-the-moment, allowing them to remediate, preventing the data loss incident in real-time with no administrator input required.

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Logo of Symantec Email Security.cloud

Symantec Email Security.cloud

By Broadcom

4.3
(117 Ratings)

Symantec Email Security.cloud is a software designed to protect organizations from email-based threats by providing advanced threat detection, anti-malware, anti-spam filtering, data loss prevention, and encryption capabilities. The software operates as a cloud-based solution, offering continuous email monitoring and scanning to guard against phishing, ransomware, and other malicious attacks. It helps organizations secure sensitive information, maintain compliance with regulatory requirements, and ensure email availability by filtering out harmful messages before they reach user inboxes. Symantec Email Security.cloud integrates with existing email systems and supports configurable policies to meet organizational security needs.

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Logo of Symantec Messaging Gateway (SMG)

Symantec Messaging Gateway (SMG)

By Broadcom

4.4
(110 Ratings)

Symantec Messaging Gateway is a software that provides email security by protecting organizations against spam, phishing, malware, and targeted attacks. The software leverages threat intelligence and content filtering to monitor and control inbound and outbound email traffic. It offers advanced threat detection, policy enforcement, and data loss prevention features to help reduce exposure to malicious content and prevent sensitive information from leaving the organization. The software integrates with existing email infrastructure and supports customizable security policies to address compliance and regulatory requirements, enhancing overall email communications safety for businesses.

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Logo of Cloudflare Cloud Email Security

Cloudflare Cloud Email Security

By Cloudflare

4.2
(109 Ratings)

Cloudflare Cloud Email Security is a software designed to protect organizations from email-based threats by filtering inbound and outbound messages for phishing, malware, and spam. The software integrates with existing email platforms to provide advanced threat detection, attachment scanning, and real-time reporting. It leverages machine learning and threat intelligence to identify suspicious patterns and prevent data loss, account compromise, business email compromise, and other vulnerabilities associated with email communication. The software aims to help businesses reduce the risk of cyberattacks and maintain secure and compliant email operations by offering policy controls and customizable filtering options.

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Logo of Forcepoint Email Security

Forcepoint Email Security

By Forcepoint

4.6
(91 Ratings)

Forcepoint Email Security is a software designed to protect organizations from email-borne threats such as phishing, malware, and spam by utilizing threat intelligence and policy-based controls. The software offers features including real-time threat detection, data loss prevention, and encryption to safeguard sensitive information transmitted via email. It integrates with existing email systems to filter inbound and outbound messages, helping organizations comply with regulatory requirements and prevent unauthorized data leakage. Forcepoint Email Security addresses the business problem of securing digital communication channels and reducing the risk of data breaches originating from email vectors.

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Logo of The Email Laundry (Legacy)

The Email Laundry (Legacy)

By Trellix

4.8
(79 Ratings)

The Email Laundry is a software designed to provide email security for businesses by filtering incoming and outgoing messages to protect against spam, phishing, malware, and other email-borne threats. The software utilizes threat detection capabilities such as analysis of attachments, link scanning, and real-time monitoring to identify suspicious content before it reaches user inboxes. It aims to reduce the risk of data breaches, support compliance requirements, and minimize the impact of malicious email activity. The software typically integrates with existing email platforms and offers automated policy controls and reporting features to help organizations manage and monitor their email security posture.

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Features of Email Security

Updated January 2026

Mandatory Features:

  • Phishing detection/prevention

  • Spam filtering

  • URL analysis and protection

  • Attachment inspection for malware/ransomware and subsequent quarantining or disarming

Gartner Research

Magic Quadrant for Email SecurityCritical Capabilities for Email Security
Gartner Peer Insights 'Voice of the Customer': Email Security

Top Trending Products

Darktrace / EMAILMimecast Advanced Email SecurityCheck Point Harmony Email & CollaborationMicrosoft Defender for Office 365Proofpoint Threat ProtectionIRONSCALES Email Security PlatformAdaptive Email DLPLibraesva Email SecurityKnowBe4 Cloud Email SecurityFortra Email Security

Gartner Peer Insights content consists of the opinions of individual end users based on their own experiences, and should not be construed as statements of fact, nor do they represent the views of Gartner or its affiliates. Gartner does not endorse any vendor, product or service depicted in this content nor makes any warranties, expressed or implied, with respect to this content, about its accuracy or completeness, including any warranties of merchantability or fitness for a particular purpose.

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