Best Email Anti-spam Software

How Many Email Anti-spam Software Products Does G2 Track?

Total Products under this Category: 144

Category Stats (Nov 2026)

  • Average Rating: 4.46/5 The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: Darktrace / EMAIL (+0.63%) - Among all products in this category, Darktrace / EMAIL recorded the largest rating increase compared to last month

Last updated: November 01, 2026

How Does G2 Rank Email Anti-spam Software Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 6,400+ Authentic Reviews
  • 144+ Products
  • Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

G2 Grid® for Email Anti-spam Software

G2 Grid® for Email Anti-spam Software plotting products by satisfaction and market presence

Highlighted products: Proofpoint Core Email Protection, Check Point Email Security, Valimail, Abnormal AI, Paubox, Microsoft Defender for Office 365, SaneBox, and LibraCyber Email Security.

Underlying data: [Grid® JSON](https://www.g2.com/categories/email-anti-spam/grids.json?focus%5B%5D=proofpoint-core-email-protection&focus%5B%5D=check-point-email-security&focus%5B%5D=valimail&focus%5B%5D=abnormal-ai&focus%5B%5D=paubox&focus%5B%5D=microsoft-microsoft-defender-for-office-365&focus%5B%5D=sanebox&focus%5B%5D=libracyber-email-security)

Proofpoint Core Email Protection

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.

Average Rating: 4.6/5.0

Total Reviews: 617

How Do G2 Users Rate Proofpoint Core Email Protection?

  • Has the product been a good partner in doing business?: 9.2/10 (Category avg: 9.1/10)
  • Quality of Support: 8.8/10 (Category avg: 9.0/10)
  • Ease of Admin: 8.5/10 (Category avg: 8.9/10)
  • Ease of Use: 8.5/10 (Category avg: 9.0/10)

Who Is the Company Behind Proofpoint Core Email Protection?

  • Seller: Proofpoint
  • Company Website:
  • Year Founded: 2002
  • HQ Location: Sunnyvale, CA
  • LinkedIn® Page: www.linkedin.com
    5,261 employees on LinkedIn®
  • Ownership: NASDAQ: PFPT

Who Uses This Product?

  • Who Uses This: Information Security Analyst, IT Security Engineer
  • Top Industries: Financial Services, Hospital & Health Care
  • Company Size: 66% Large, 30% Medium

What Do G2 Reviewers Say About Proofpoint Core Email Protection?

AI-generated summary from verified user reviews

Pros
  • Users commend the immediate impact on risk reduction with Proofpoint Core Email Protection's automated analysis capabilities.
  • Users value the effective email filtering of Proofpoint Core, enhancing spam management and BEC identification significantly.
  • Users appreciate the ease of use of Proofpoint Core Email Protection, benefiting from a streamlined, navigable platform.
  • Users commend the immediate impact on risk reduction and effective identification of BEC types of emails by Proofpoint.
  • Users value Proofpoint for its exceptional security, effectively blocking threats and ensuring safe email communications.
Cons
  • Users find the outdated interface challenging, with complexity and overwhelming information complicating email management.
  • Users find the user interface lacking, noting clunkiness and difficulty in retrieving accurate search results.
  • Users face email categorization issues that lead to confusion and require manual intervention for legitimate emails.
  • Users find the complexity of Proofpoint Core Email Protection can make policy tuning and management time-consuming.
  • Users face frequent false positives with Proofpoint, leading to miscommunication and increased management overhead.

What Are Recent G2 Reviews of Proofpoint Core Email Protection?

What Are G2 Users Discussing About Proofpoint Core Email Protection?

Check Point Email Security

Check Point Harmony Email & Collaboration, protects enterprise data by preventing targeted attacks on SaaS applications and cloud-based email.

Average Rating: 4.6/5.0

Total Reviews: 487

How Do G2 Users Rate Check Point Email Security?

  • Has the product been a good partner in doing business?: 9.3/10 (Category avg: 9.1/10)
  • Quality of Support: 9.1/10 (Category avg: 9.0/10)
  • Ease of Admin: 9.3/10 (Category avg: 8.9/10)
  • Ease of Use: 9.2/10 (Category avg: 9.0/10)

Who Is the Company Behind Check Point Email Security?

Who Uses This Product?

  • Who Uses This: IT Manager, Systems Administrator
  • Top Industries: Information Technology and Services, Computer & Network Security
  • Company Size: 57% Medium, 23% Large

What Do G2 Reviewers Say About Check Point Email Security?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the effective spam and phishing prevention of Check Point Email Security, simplifying their email management.
  • Users value the effective detection and prevention of spam and phishing attacks, ensuring their email security.
  • Users commend the excellent email security features of Check Point Email Security, enhancing protection and productivity effortlessly.
  • Users find the ease of use of Check Point Email Security allows for effortless management of email threats.
  • Users value the effective phishing protection of Check Point Email Security, enhancing their confidence in email communications.
Cons
  • Users experience false positives that disrupt workflows and necessitate manual reviews, complicating email management.
  • Users find the initial setup complex, requiring significant time and adjustment to align security policies effectively.
  • Users find the initial setup complex, needing time and adjustments to tailor security policies effectively.
  • Users find the limited features of Check Point Email Security restrict their customization and email platform support options.
  • Users often struggle with configuration difficulties, finding initial setup and navigation cumbersome and time-consuming.

What Are Recent G2 Reviews of Check Point Email Security?

What Are G2 Users Discussing About Check Point Email Security?

Valimail

Valimail: The Leader in Email Authentication & Brand Protection Valimail is the trusted leader in automated email authentication, helping organizations achieve and maintain DMARC enforcement up to 4x faster with a unique blend of speed, simplicity, and automation. By eliminating manual processes, Valimail ensures that your brand stays protected against phishing, spoofing, and email fraud while improving email deliverability and brand trust. Valimail offers three solutions: 1) Valimail Monitor provides organizations with global visibility into all senders using their domains, removing the complexity of interpreting raw DMARC reports. Key Features & Benefits: -See Who’s Sending on Your Behalf – Instantly identify all senders using your domain and authorize the right ones. -Check Google & Yahoo Readiness – Get a real-time check to ensure your domain meets Google & Yahoo’s latest DMARC, DKIM, and SPF requirements. -Preview BIMI for Your Brand – Upload your logo and see how it would appear in inboxes on mobile and desktop. >> First step towards DMARC enforcement – Identify and authorize all senders before making changes that impact email flow. 2) Valimail Enforce is the only FedRAMP-certified platform and the vetted DMARC partner for Microsoft 365, offering fully automated DMARC, SPF, and DKIM configuration to eliminate errors and simplify implementation. Key Features & Benefits: -Automated DMARC, DKIM, and SPF Configuration – Reduce the risk of misconfiguration and achieve enforcement faster. -Expert DMARC Support & Advisory Services – Get direct access to technical support for tailored guidance and rapid issue resolution. -Powerful Analytics & Reporting – Gain actionable insights into email performance, phishing attempts, and domain spoofing. >> Stop phishing attacks, prevent brand impersonation, and ensure only legitimate emails reach inboxes. 3) Valimail Amplify helps brands stand out in crowded inboxes by enabling BIMI (Brand Indicators for Message Identification) and displaying your verified brand logo directly in emails. Key Features & Benefits: -Enhanced Brand Visibility & Competitive Edge – Your logo appears directly in inboxes, making your emails instantly recognizable. -Boost Engagement & Trust – Recipients trust and engage more with branded emails, improving open rates and conversions. -Seamless BIMI Implementation – The only fully automated BIMI solution, offering single-click logo configuration and automated VMC/CMC management. -Effortless Brand Asset Management – Easily assign, update, or swap logos across domains. >> For companies at DMARC enforcement, Amplify accelerates BIMI adoption—ensuring your logo appears in inboxes faster. For more information visit www.valimail.com.

Average Rating: 4.5/5.0

Total Reviews: 696

How Do G2 Users Rate Valimail?

  • Has the product been a good partner in doing business?: 9.2/10 (Category avg: 9.1/10)
  • Quality of Support: 9.0/10 (Category avg: 9.0/10)
  • Ease of Admin: 9.1/10 (Category avg: 8.9/10)
  • Ease of Use: 8.9/10 (Category avg: 9.0/10)

Who Is the Company Behind Valimail?

  • Seller: Valimail
  • Company Website:
  • Year Founded: 2015
  • HQ Location: Denver, CO
  • LinkedIn® Page: linkedin.com
    101 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: IT Manager, Owner
  • Top Industries: Information Technology and Services, Computer Software
  • Company Size: 46% Small, 34% Medium

What Do G2 Reviewers Say About Valimail?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the ease of use of Valimail, finding the setup and navigation intuitive and straightforward.
  • Users appreciate the ease of DMARC management with Valimail, enjoying simplified setup and improved email security.
  • Users commend the easy setup of Valimail, appreciating its simplicity and effectiveness in email security management.
  • Users appreciate the easy setup of Valimail, making email security management straightforward and efficient.
  • Users value the brilliant reporting feature of Valimail, providing insights on DMARC and SPF configurations effortlessly.
Cons
  • Users note that Valimail can be expensive, as many features require significant investment for automation-focused services.
  • Users find limited reporting challenging, making it difficult to analyze sender issues and overall email functionality.
  • Users find the complexity of Valimail challenging, requiring IT knowledge and effort to navigate its GUI and reports.
  • Users experience a lack of detail in Valimail, making it difficult to troubleshoot sender-related issues.
  • Users express concerns over DMARC automation and vendor lock-in, preferring hands-on management and missing advanced features.

What Are Recent G2 Reviews of Valimail?

What Are G2 Users Discussing About Valimail?

AI can help you find the answers. G2 helps you trust them.

Connect G2 to Claude or ChatGPT for answers grounded in G2's trusted reviews, comparisons, and pricing from real user insights.

How it works
Connect G2 to ChatGPTConnect G2 to Claude

Abnormal AI

Abnormal AI is the leading AI-native human behavior security platform, leveraging machine learning to stop sophisticated inbound attacks and detect compromised accounts across email and connected applications. The anomaly detection engine leverages identity and context to understand human behavior and analyze the risk of every cloud email event--detecting and stopping sophisticated, socially-engineered attacks that target the human vulnerability. You can deploy Abnormal in minutes with an API integration for Microsoft 365 or Google Workspace and experience the full value of the platform instantly. Additional protection is available for Slack, Workday, ServiceNow, Zoom, and multiple other cloud applications. Abnormal is currently trusted by more than 3,200 organizations, including over 25% of the Fortune 500, as it continues to redefine how cybersecurity works in the age of AI. For more information, please visit abnormal.ai

Average Rating: 4.7/5.0

Total Reviews: 96

How Do G2 Users Rate Abnormal AI?

  • Has the product been a good partner in doing business?: 9.4/10 (Category avg: 9.1/10)
  • Quality of Support: 9.5/10 (Category avg: 9.0/10)
  • Ease of Admin: 9.5/10 (Category avg: 8.9/10)
  • Ease of Use: 9.5/10 (Category avg: 9.0/10)

Who Is the Company Behind Abnormal AI?

  • Seller: Abnormal AI
  • Company Website:
  • Year Founded: 2018
  • HQ Location: Las Vegas, USA
  • LinkedIn® Page: www.linkedin.com
    1,620 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Financial Services, Manufacturing
  • Company Size: 44% Large, 44% Medium

What Do G2 Reviewers Say About Abnormal AI?

AI-generated summary from verified user reviews

Pros
  • Users value the ease of use of Abnormal AI, enabling quick setup and efficient email management.
  • Users commend the timely and helpful customer support of Abnormal AI, enhancing their overall experience and confidence.
  • Users appreciate the easy setup of Abnormal AI, enabling quick and efficient protection for their email accounts.
  • Users commend Abnormal AI for its high detection efficiency, minimizing false positives and enhancing email security significantly.
  • Users appreciate the automated email monitoring by Abnormal AI, enhancing safety and simplifying email management effectively.
Cons
  • Users note email filtering issues, including lost filters and confusion over flagged legitimate emails, affecting overall usability.
  • Users are concerned about email issues, including delays and confusion from flagged legitimate messages and post-delivery actions.
  • Users report experiencing false positives, where legitimate emails are incorrectly flagged, leading to confusion and manual reviews.
  • Users feel that limited reporting and filtering options hinder their ability to efficiently analyze data.
  • Users feel that the post-processing nature of the tool allows brief email visibility before remediation occurs.

What Are Recent G2 Reviews of Abnormal AI?

Paubox

Paubox is a HIPAA compliant email security platform designed for healthcare organizations. It provides outbound email encryption and AI-powered inbound email protection, helping organizations safeguard protected health information (PHI) without changing how staff or patients use email. Email remains a critical communication tool in healthcare, but standard platforms like Google Workspace and Microsoft 365 are not HIPAA compliant on their own. Paubox makes compliance automatic and enhances security to defend against evolving phishing and malware attacks, all while maintaining a seamless user experience. Paubox serves small to mid-sized healthcare organizations, clinics, and IT teams seeking reliable compliance, reduced risk, and simple management. Key capabilities: - Automatic outbound encryption: Every message is encrypted by default; recipients read emails directly in their inbox, without portals or passwords - AI-powered inbound email security: Detects and blocks phishing, spoofing, and malware using generative AI analysis - Seamless integration: Works with Google Workspace, Microsoft 365, and Microsoft Exchange without new workflows or domain changes - Compliance and control: Supports HIPAA compliance and minimizes human error in handling PHI - Additional tools: Archiving, Data Loss Prevention, Paubox Email API, and Paubox Marketing Benefits: - Simplifies compliance management and reduces IT workload - Improves patient and staff experience with frictionless secure email - Strengthens protection against modern email threats Paubox enables healthcare organizations to confidently use email as a secure, compliant, and user-friendly communication channel, eliminating guesswork for staff and helping IT teams protect against data breaches and compliance risk.

Average Rating: 4.9/5.0

Total Reviews: 674

How Do G2 Users Rate Paubox?

  • Has the product been a good partner in doing business?: 9.8/10 (Category avg: 9.1/10)
  • Quality of Support: 9.7/10 (Category avg: 9.0/10)
  • Ease of Admin: 9.5/10 (Category avg: 8.9/10)
  • Ease of Use: 9.7/10 (Category avg: 9.0/10)

Who Is the Company Behind Paubox?

  • Seller: Paubox
  • Year Founded: 2015
  • HQ Location: San Francisco, CA
  • LinkedIn® Page: www.linkedin.com
    49 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: Owner, CEO
  • Top Industries: Mental Health Care, Hospital & Health Care
  • Company Size: 85% Small, 13% Medium

What Do G2 Reviewers Say About Paubox?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the ease of use of Paubox, benefiting from seamless integration and straightforward customer service.
  • Users are impressed by the security and seamless integration with Google Workspace, ensuring a safe experience.
  • Users commend Paubox for its excellent customer support, facilitating effortless security and seamless integration with Google Workspace.
  • Users appreciate the seamless integration of Paubox with Google Workspace, enhancing security and ease of use.
  • Users appreciate the easy setup of Paubox, enabling seamless integration and a worry-free email experience.
Cons
  • Users find Paubox to be expensive, especially with additional costs for add-on services and features.
  • Users experience email delivery issues with Paubox, facing delays, missed encryptions, and rejections unexpectedly.
  • Users find the difficult setup process challenging, especially those lacking technical skills or knowledge of email hosting.
  • Users find the high costs of email encryption add-ons discourage them from utilizing additional features effectively.
  • Users find the additional costs for encryption services expensive, making it hard to access desired features.

What Are Recent G2 Reviews of Paubox?

What Are G2 Users Discussing About Paubox?

Microsoft Defender for Office 365

Microsoft Defender for Office 365 is a comprehensive security solution designed to protect organizations from advanced threats targeting email and collaboration tools within the Microsoft 365 environment. It offers robust protection against phishing, malware, and business email compromise, ensuring secure communication and collaboration across platforms like Exchange Online, Microsoft Teams, SharePoint, and OneDrive. Key Features and Functionality: - Safe Attachments: Scans email attachments in a secure environment to detect and block malicious content before it reaches users. - Safe Links: Provides real-time protection by analyzing URLs at the time of click, safeguarding users from malicious links. - Anti-Phishing Policies: Utilizes advanced algorithms and machine learning to identify and mitigate phishing attempts, including those involving domain impersonation. - Protection for Collaboration Tools: Extends security measures to Microsoft Teams, SharePoint, and OneDrive, ensuring safe file sharing and collaboration. - Automated Investigation and Response (AIR): Automates threat investigation processes, enabling swift identification and remediation of security incidents. - Attack Simulation Training: Offers tools to simulate phishing attacks, helping organizations educate employees and strengthen their security posture. Primary Value and Problem Solved: Microsoft Defender for Office 365 addresses the critical need for advanced threat protection in today's digital workplace. By integrating seamlessly with Microsoft 365 applications, it provides a unified defense against sophisticated cyber threats, reducing the risk of data breaches and ensuring business continuity. Its comprehensive approach not only safeguards email communications but also secures collaborative platforms, enabling organizations to operate confidently in a secure environment.

Average Rating: 4.5/5.0

Total Reviews: 283

How Do G2 Users Rate Microsoft Defender for Office 365?

  • Has the product been a good partner in doing business?: 8.7/10 (Category avg: 9.1/10)
  • Quality of Support: 8.7/10 (Category avg: 9.0/10)
  • Ease of Admin: 8.9/10 (Category avg: 8.9/10)
  • Ease of Use: 8.9/10 (Category avg: 9.0/10)

Who Is the Company Behind Microsoft Defender for Office 365?

  • Seller: Microsoft
  • Year Founded: 1975
  • HQ Location: Redmond, Washington
  • LinkedIn® Page: www.linkedin.com
    232,750 employees on LinkedIn®
  • Ownership: MSFT
  • Phone: +1 (877) 276-2464

Who Uses This Product?

  • Who Uses This: Software Engineer, Associate Software Engineer
  • Top Industries: Information Technology and Services, Computer Software
  • Company Size: 39% Large, 37% Medium

What Do G2 Reviewers Say About Microsoft Defender for Office 365?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the ease of use of Microsoft Defender for Office 365, benefiting from seamless integration and straightforward management.
  • Users value the seamless integration and robust protection offered by Microsoft Defender for Office 365 against phishing and malware.
  • Users value the robust protection against phishing offered by Microsoft Defender for Office 365, enhancing email security significantly.
  • Users value the seamless Office 365 integration of Defender for Office 365, enhancing efficiency in security management.
  • Users appreciate the seamless integration of Defender for Office 365 within the Microsoft ecosystem, enhancing efficiency and security management.
Cons
  • Users find the complexity of Microsoft Defender for Office 365 frustrating due to scattered configurations and licensing differences.
  • Users find the issue of false positives in spam filtering inconvenient, necessitating manual reviews and adjustments.
  • Users face configuration difficulties due to complexity across multiple portals, making setup and policy management overwhelming.
  • Users find the limited reporting options frustrating, as accessing specific information often requires multiple steps during investigations.
  • Users experience poor detection with Microsoft Defender for Office 365, often overwhelmed by false alerts and noisy notifications.

What Are Recent G2 Reviews of Microsoft Defender for Office 365?

What Are G2 Users Discussing About Microsoft Defender for Office 365?

SaneBox

SaneBox is an email management tool that helps the average worker save at least 2.5 hours per week so they can spend more time outside their inbox. Founded in 2011, SaneBox offers individuals and enterprise clients alike a full suite of email organizational tools to take back control of their inbox.

Average Rating: 4.8/5.0

Total Reviews: 244

How Do G2 Users Rate SaneBox?

  • Has the product been a good partner in doing business?: 9.7/10 (Category avg: 9.1/10)
  • Quality of Support: 9.7/10 (Category avg: 9.0/10)
  • Ease of Admin: 9.7/10 (Category avg: 8.9/10)
  • Ease of Use: 9.5/10 (Category avg: 9.0/10)

Who Is the Company Behind SaneBox?

  • Seller: SaneBox
  • Year Founded: 2010
  • HQ Location: Boston, MA
  • LinkedIn® Page: www.linkedin.com
    14 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: Owner, CEO
  • Top Industries: Information Technology and Services, Marketing and Advertising
  • Company Size: 80% Small, 9% Medium

What Do G2 Reviewers Say About SaneBox?

AI-generated summary from verified user reviews

Pros
  • Users praise the ease of use of SaneBox, relishing its simple setup and effective email organization.
  • Users value the easy email management of SaneBox, significantly reducing clutter and saving time in inbox organization.
  • Users love how SaneBox offers effective email management, simplifying inbox organization and saving them valuable time.
  • Users value the efficiency of SaneBox, saving time and keeping their inboxes organized effortlessly.
  • Users appreciate the easy setup of SaneBox, simplifying email management and enhancing productivity effortlessly.
Cons
  • Users note that SaneBox can be expensive when adding multiple accounts, affecting its overall value perception.
  • Users find the lack of training in SaneBox requires time and frequent checks for spam accuracy.
  • Users find the learning curve to be steep, requiring additional time for training and verification of spam classification.
  • Users desire more options and customizations in SaneBox, feeling the current features are insufficient for its price.
  • Users point out the inadequate AI features of SaneBox, indicating a need for more options and better functionality.

What Are Recent G2 Reviews of SaneBox?

What Are G2 Users Discussing About SaneBox?

LibraCyber Email Security

Protect your business from disruption, financial loss and reputational damage. LibraCyber Email Security stops known and emerging email threats from reaching their target, so you only receive legitimate messages. It provides exceptional email security by integrating cloud email and a secure email gateway with LibraCyber’s unique Adaptive Trust Engine that uses AI to learn the usual patterns of behavior for organizations and individuals, continuously assessing the strength of business-to-business trust and proactively holding anomalous traffic. LibraCyber Email Security scans and filters all inbound and outbound emails for advanced malware, phishing, business email compromise, spam and more. Proprietary sandboxing technology removes dangerous payloads and active content from attachments, and you can protect users from visiting unsafe sites with active URL analysis that checks every link. Use LibraCyber Email Security to understand the threat landscape and attacks launched against your organization, deal with security incidents faster, and see how you compare against others around the world. Easy to follow workflows make it painless to change configuration settings, and full reporting and dashboards give you full visibility of email traffic and trends so you can understand the risks and use insights to plan intelligent mitigation strategies.

Average Rating: 4.8/5.0

Total Reviews: 111

How Do G2 Users Rate LibraCyber Email Security?

  • Has the product been a good partner in doing business?: 9.6/10 (Category avg: 9.1/10)
  • Quality of Support: 9.8/10 (Category avg: 9.0/10)
  • Ease of Admin: 9.4/10 (Category avg: 8.9/10)
  • Ease of Use: 9.3/10 (Category avg: 9.0/10)

Who Is the Company Behind LibraCyber Email Security?

  • Seller: LibraCyber
  • Company Website:
  • Year Founded: 2013
  • HQ Location: Lecco, IT
  • LinkedIn® Page: www.linkedin.com
    221 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: IT Manager
  • Top Industries: Information Technology and Services, Computer & Network Security
  • Company Size: 46% Medium, 35% Small

What Do G2 Reviewers Say About LibraCyber Email Security?

AI-generated summary from verified user reviews

Pros
  • Users value the ease of use of LibraCyber Email Security, praising its quick setup and effective support.
  • Users praise the responsive customer support of LibraCyber Email Security, enhancing their overall experience and satisfaction.
  • Users value the excellent email protection of LibraCyber Email Security, appreciating its ease of use and effectiveness.
  • Users commend the effectiveness of LibraCyber Email Security, appreciating its ability to keep mailboxes safe and clean.
  • Users find the setup process very easy, enabling quick installation and smooth integration with existing systems.
Cons
  • Users find the complexity of settings and filters in LibraCyber Email Security a bit challenging to navigate.
  • Users face email issues such as SPF/DKIM problems, recurring logins, and occasional filter bypasses that hinder usability.
  • Users find the user interface sluggish and less intuitive, causing frustration with navigation and configuration options.
  • Users face access issues with LibraCyber, complicating troubleshooting and navigating the admin center.
  • Users find the difficult setup of LibraCyber Email Security challenging, especially for those less experienced with technology.

What Are Recent G2 Reviews of LibraCyber Email Security?

Darktrace / EMAIL

Darktrace / EMAIL secures email and collaboration by training exclusively on each organization’s own communication patterns, not shared threat intelligence. It builds a Unique Behavioral Profile for every user – spanning email, identity, DLP, and human risk – to catch novel phishing, business email compromise, and account takeover that signature-based tools miss by design. It’s recognized as a Leader in Gartner’s Magic Quadrant and in the 2025 Voice of the Customer for Email Security Platforms. Traditional secure email gateways and native protections rely on known threat intelligence, so they need a first victim before they can catch a new attack – and generative AI has only widened that gap. Darktrace / EMAIL takes a different approach: it uses Adaptive AI to build a Unique Behavioral Profile for every user, then detects deviations across inbound, outbound, and lateral mail and responds with precise, autonomous action. Key capabilities include: - Adaptive Email Security: Builds a Unique Behavioral Profile for every user across the full mail flow – inbound, outbound, and lateral protection, DMARC management, account takeover detection, data loss detection, and AI attack/GenAI visibility. Darktrace catches on average 17% of threats that leading SEGs miss on arrival. - Identity Detect & Respond: Adds autonomous response to account takeover – session termination and forced re-authentication – plus recovery and audit across email, SaaS, and cloud. - Email DLP & Collaboration Security: Suspicious emails are automatically quarantined, links are rewritten, and attachments are removed, extending detection with hold, redirect, and strip-sensitive-content response actions plus dedicated behavioral coverage across Microsoft Teams, Zoom, and Slack, all without interrupting legitimate business communication. - Adaptive Security Awareness Training: Personalizes training, phishing simulations, and just-in-time coaching to each employee’s actual behavior, with outcomes feeding back into the detection model to close the loop. For security teams, Darktrace / EMAIL reduces operational overhead by automating triage and response. Its Cyber AI Analyst provides contextual insights, while end-users benefit from clear, in-app narratives that explain why a message is suspicious – helping to reduce false phishing reports and improve awareness. Benefits for organizations include: - Coverage across email, collaboration, and SaaS platforms in one behavioral model. - Up to 90% less time spent triaging alerts, so security teams spend more time on higher-value work. - Native integration with Microsoft 365, Exchange, and Google Workspace that doesn’t disrupt mail flow. Darktrace / EMAIL is a Gartner Leader in both the Magic Quadrant and the 2025 Voice of the Customer for Email Security Platforms – recognition that tracks with what it actually catches: threats built for a specific business, not just known attack patterns.

Average Rating: 4.2/5.0

Total Reviews: 43

How Do G2 Users Rate Darktrace / EMAIL?

  • Has the product been a good partner in doing business?: 9.4/10 (Category avg: 9.1/10)
  • Quality of Support: 8.0/10 (Category avg: 9.0/10)
  • Ease of Admin: 8.1/10 (Category avg: 8.9/10)
  • Ease of Use: 8.2/10 (Category avg: 9.0/10)

Who Is the Company Behind Darktrace / EMAIL?

  • Seller: Darktrace
  • Year Founded: 2013
  • HQ Location: Cambridgeshire, England
  • LinkedIn® Page: www.linkedin.com
    2,597 employees on LinkedIn®
  • Ownership: LON: DARK

Who Uses This Product?

  • Top Industries: Computer Software
  • Company Size: 58% Medium, 33% Large

What Do G2 Reviewers Say About Darktrace / EMAIL?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the adaptive AI detection of Darktrace, making security management seamless and effective.
  • Users appreciate the excellent customer support provided by Darktrace, enhancing their experience and ensuring quick assistance.
  • Users appreciate the high detection efficiency of Darktrace EMAIL, ensuring minimal malicious emails slip through.
  • Users commend the superior product quality of Darktrace, benefiting from reliable security and excellent support services.
  • Users highlight the reliability of Darktrace EMAIL, offering confidence in email account protection and malicious detection.
Cons
  • Users note that Darktrace / EMAIL is expensive, though they acknowledge its value justifies the cost.
  • Users experience poor integration with Darktrace, particularly with Outlook on Windows and Mac, affecting usability.
  • Users find the complexity of the wording and descriptions challenging, requiring specialized IT knowledge for effective use.
  • Users experience false positives as emails are often blocked, but they can easily release and whitelist them.
  • Users find the regular software updates to be tedious and detracting from the overall experience of Darktrace / EMAIL.

What Are Recent G2 Reviews of Darktrace / EMAIL?

IRONSCALES

IRONSCALES is a cloud-native email security platform that helps enterprises and MSPs close gaps with mailbox-level detection, autonomous remediation, and built-in user training. It combines AI and human insights that continuously learn from user behavior, message context, and analyst feedback to identify advanced threats like BEC, account takeovers, impersonation, and other advanced phishing attacks. IRONSCALES is headquartered in Atlanta, Georgia and is proud to serve more than 18,000 customers globally. IRONSCALES leverages adaptive AI and its Agentic AI engine, Themis, to drive autonomous, mailbox-level remediation with customizable automation. Smart clustering, context-driven decisioning, and user-reported inputs enable Themis to remediate threats in real time while preserving analyst oversight and control. Designed for rapid deployment via API, IRONSCALES integrates with existing security stacks without requiring MX record changes. To reduce risk, improve SOC efficiency, and support a proactive security culture, its comprehensive capabilities also include: - Phishing Simulations - Security Awareness Training - DMARC management - Deepfake Live Protection - Generative AI tools

Average Rating: 4.7/5.0

Total Reviews: 67

How Do G2 Users Rate IRONSCALES?

  • Has the product been a good partner in doing business?: 9.7/10 (Category avg: 9.1/10)
  • Quality of Support: 9.3/10 (Category avg: 9.0/10)
  • Ease of Admin: 9.4/10 (Category avg: 8.9/10)
  • Ease of Use: 9.5/10 (Category avg: 9.0/10)

Who Is the Company Behind IRONSCALES?

  • Seller: IRONSCALES
  • Company Website:
  • Year Founded: 2014
  • HQ Location: Atlanta, Georgia
  • LinkedIn® Page: www.linkedin.com
    181 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Information Technology and Services, Non-Profit Organization Management
  • Company Size: 46% Medium, 35% Small

What Do G2 Reviewers Say About IRONSCALES?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the ease of use of IRONSCALES, noting quick setup and intuitive management for email threats.
  • Users value the advanced email security features of IRONSCALES, significantly improving their protection against threats.
  • Users value the time-saving phishing protection of IRONSCALES, enhancing security while simplifying email threat management.
  • Users value the easy setup of IRONSCALES, allowing quick implementation and efficient email threat management.
  • Users commend the responsive customer support of IRONSCALES, enhancing their overall experience and addressing queries effectively.
Cons
  • Users encounter false positives occasionally, which can complicate email accuracy but is generally expected in security tools.
  • Users experience poor detection as legitimate emails may be misclassified, risking user engagement with harmful content.
  • Users find IRONSCALES expensive, with some disappointed by additional costs for features in the subscription.
  • Users note the limited features of IRONSCALES, wishing for better integration and customization options.
  • Users feel the difficult training modules lack organization and clarity, impacting the overall user experience.

What Are Recent G2 Reviews of IRONSCALES?

Sublime Email Security Platform

Sublime’s agentic platform stops more email attacks with less work. Our AI agents work like a digital SOC team in your environment, triaging and blocking advanced threats while adapting protections at adversary speed. It provides full transparency and automation by default, with control on demand for advanced teams, eliminating vendor bottlenecks or one-size-fits-all limits. Core Outcomes (The What): - Stop More Attacks with Fewer False Positives - block sophisticated threats (BEC, novel phishing, QR-based phishing) and reduce the false positives that waste time and disrupt workflows. Our tailored protections deliver a demonstrably higher catch rate, validated by the world's most demanding security teams. - Automate the Abuse Mailbox - Our Autonomous Security Analyst (ASA) automates triage, investigation, and remediation of user-reported email, cutting MTTR from hours to seconds and freeing your SOC team to focus on the threats that matter most. - Adapt Defenses Automatically. - When a missed attack is identified, we can create new coverage in hours. Our Autonomous Detection Engineer (ADÉ) generates, backtests, and deploys org-specific coverage, eliminating vendor ticket limbo. Differentiators (The How): - A Team of Agents using AI, Not Just a Black Box - Sublime deploys a team of specialized agents - like an analyst and a detection engineer - that use AI to protect, triage, and adapt your defenses. Unlike an opaque, monolithic AI, our agentic approach provides full transparency into every action, with visible decision history, message lineage, and backtests. - Org-Specific Protection, Not One-Size-Fits-All - Our Distributed Detection Model (DDM) is the foundation of our platform. It runs per-environment coverage that adapts to the unique attacks you face, allowing us to safely deploy protections that would be noisy in global models - something centralized systems simply can’t support. This means higher day-one efficacy and fewer false positives. - Autonomous by Default, Control on Demand - By stopping more attacks and reducing false positives, Sublime delivers a superior autonomous experience that requires less work. For advanced teams, the platform is fully extensible, allowing you to author your own detections and hunt for threats with a level of precision that one-size-fits-all solutions can't. Innovative organizations including Spotify, Snowflake, Brex, Elastic, Compass, Anduril, SentinelOne, and others rely on Sublime to secure the business and keep teams focused on strategic defense. 🔗 Learn how Sublime helps security teams stop more attacks with less work at sublime.security

Average Rating: 4.8/5.0

Total Reviews: 33

How Do G2 Users Rate Sublime Email Security Platform?

  • Has the product been a good partner in doing business?: 9.8/10 (Category avg: 9.1/10)
  • Quality of Support: 9.8/10 (Category avg: 9.0/10)
  • Ease of Admin: 9.0/10 (Category avg: 8.9/10)
  • Ease of Use: 9.2/10 (Category avg: 9.0/10)

Who Is the Company Behind Sublime Email Security Platform?

  • Seller: Sublime Security
  • Company Website:
  • Year Founded: 2019
  • HQ Location: Washington, District of Columbia, United States
  • LinkedIn® Page: www.linkedin.com
    306 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Computer Software, Information Technology and Services
  • Company Size: 55% Large, 24% Medium

What Do G2 Reviewers Say About Sublime Email Security Platform?

AI-generated summary from verified user reviews

Pros
  • Users value the ease of use of the Sublime Email Security Platform, enhancing automation and saving significant time.
  • Users commend the high detection efficiency of Sublime Email Security Platform, appreciating its accuracy and customization options.
  • Users value the easy setup of Sublime Email Security Platform, facilitating a smooth transition and saving time.
  • Users value the easy initial setup of the Sublime Email Security Platform, enhancing their experience and efficiency.
  • Users appreciate the deep customization capabilities of Sublime Email Security Platform, enabling precise detection and automation configurations.
Cons
  • Users note the missing features in Sublime Email Security, particularly the lack of outbound capabilities and processing limitations.
  • Users find the steep learning curve of Sublime Email Security Platform challenging, needing time to grasp the rule language.
  • Users find the learning curve steep for Sublime Email Security, requiring time to master its powerful features.
  • Users are frustrated with the limited features of Sublime Email Security Platform, particularly the absence of UK processing capabilities.
  • Users face a steep learning curve with Sublime's MQL, requiring time for effective use and tuning.

What Are Recent G2 Reviews of Sublime Email Security Platform?

Hornetsecurity 365 Total Protection

365 Total Protection is the only solution on the market to cover all aspects of security, compliance and backup for Microsoft 365. Choose from various bundles to suit your business needs, and enjoy state-of-the-art email security that protects against spam, viruses, phishing and ransomware; plus email signatures and disclaimers. You can also benefit from Advanced Threat Protection (ATP) to defend your users against the most sophisticated email attacks, automated email continuity to prevent unexpected downtime and legally compliant email archiving to keep all emails safe and searchable. You can even opt for backup and recovery for endpoints and Microsoft 365 data in mailboxes, Teams, OneDrive and SharePoint. 365 Total Protection‘s tailored integration with Microsoft 365 simplifies your entire experience: from signup, to setup, to feature and user management. Its central console is a perfect blend of data privacy and ease of use, enabling you to do more and worry less.

Average Rating: 4.6/5.0

Total Reviews: 70

How Do G2 Users Rate Hornetsecurity 365 Total Protection?

  • Has the product been a good partner in doing business?: 9.0/10 (Category avg: 9.1/10)
  • Quality of Support: 8.9/10 (Category avg: 9.0/10)
  • Ease of Admin: 8.7/10 (Category avg: 8.9/10)
  • Ease of Use: 9.1/10 (Category avg: 9.0/10)

Who Is the Company Behind Hornetsecurity 365 Total Protection?

  • Seller: Hornetsecurity
  • Company Website:
  • Year Founded: 2007
  • HQ Location: Hannover, DE
  • LinkedIn® Page: www.linkedin.com
    562 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Computer & Network Security, Information Technology and Services
  • Company Size: 51% Small, 41% Medium

What Do G2 Reviewers Say About Hornetsecurity 365 Total Protection?

AI-generated summary from verified user reviews

Pros
  • Users value the comprehensive, multi-layered email security of Hornetsecurity 365 Total Protection, effectively blocking spam and threats.
  • Users value the comprehensive, multi-layered defense of Hornetsecurity 365 Total Protection for enhanced email security and compliance.
  • Users appreciate the ease of use of Hornetsecurity 365 Total Protection, highlighting its simple setup and effective management.
  • Users appreciate the multi-layered malware protection of Hornetsecurity 365 Total Protection for its robust defense against threats.
  • Users value the easy Office 365 integration with Hornetsecurity, enhancing daily email protection without complex setups.
Cons
  • Users find the user interface confusing, with unclear naming and a steep learning curve for setup.
  • Users find the interface too techy and often struggle with unclear settings and insufficient documentation.
  • Users find the complexity of settings and limited support challenging, impacting their overall experience with Hornetsecurity.
  • Users find configuration difficulties with Hornetsecurity 365 Total Protection, requiring significant effort for optimal setup.
  • Users find the difficult setup of Hornetsecurity 365 Total Protection to be time-consuming and challenging initially.

What Are Recent G2 Reviews of Hornetsecurity 365 Total Protection?

What Are G2 Users Discussing About Hornetsecurity 365 Total Protection?

Varonis Interceptor

Average Rating: 4.9/5.0

Total Reviews: 32

How Do G2 Users Rate Varonis Interceptor?

  • Has the product been a good partner in doing business?: 9.9/10 (Category avg: 9.1/10)
  • Quality of Support: 9.9/10 (Category avg: 9.0/10)
  • Ease of Admin: 9.7/10 (Category avg: 8.9/10)
  • Ease of Use: 9.8/10 (Category avg: 9.0/10)

Who Is the Company Behind Varonis Interceptor?

  • Seller: Varonis
  • Year Founded: 2005
  • HQ Location: New York, US
  • LinkedIn® Page: www.linkedin.com
    2,834 employees on LinkedIn®
  • Ownership: NASDAQ: VRNS

Who Uses This Product?

  • Company Size: 47% Medium, 40% Small

What Are Recent G2 Reviews of Varonis Interceptor?

KnowBe4 Email & Collaboration Security

KnowBe4 Email & Collaboration Security is the AI-native defense suite built to protect every conversation across Microsoft 365 and Google Workspace. Combining multi-engine behavioral AI with real-time user coaching, the platform stops inbound threats, prevents outbound data loss, and automates SOC response across the security lifecycle. Key Capabilities: - Inbound Protection (Defend): Multi-engine AI blocks zero-payload BEC, executive impersonation, quishing, and prompt injections that pass native mail filters. - Pre-Send Outbound DLP (Prevent): In-client compose prompts stop misdirected sends, wrong attachments, and sensitive exfiltration before delivery. - Explainable AI & Coaching: Replaces black-box scores with signal-by-signal verdict evidence and localized teachable moments at the exact point of risk. - Autonomous SOC Response (Defend and PhishER Plus): Auto-filters 50%+ graymail noise and purges threat variants globally across all inboxes in under two minutes.

Average Rating: 4.5/5.0

Total Reviews: 74

How Do G2 Users Rate KnowBe4 Email & Collaboration Security?

  • Has the product been a good partner in doing business?: 9.4/10 (Category avg: 9.1/10)
  • Quality of Support: 8.9/10 (Category avg: 9.0/10)
  • Ease of Admin: 8.7/10 (Category avg: 8.9/10)
  • Ease of Use: 8.8/10 (Category avg: 9.0/10)

Who Is the Company Behind KnowBe4 Email & Collaboration Security?

  • Seller: KnowBe4, Inc.
  • Company Website:
  • Year Founded: 2010
  • HQ Location: Clearwater, FL
  • LinkedIn® Page: www.linkedin.com
    2,655 employees on LinkedIn®
  • Ownership: NASDAQ: KNBE

Who Uses This Product?

  • Top Industries: Hospital & Health Care, Information Technology and Services
  • Company Size: 55% Medium, 28% Small

What Do G2 Reviewers Say About KnowBe4 Email & Collaboration Security?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the effective protection against email threats, enhancing security and mitigating human risk effortlessly.
  • Users value the effective protection against email threats provided by KnowBe4 Email & Collaboration Security, enhancing overall security awareness.
  • Users commend the exceptional customer support of KnowBe4, enhancing the onboarding and configuration experience significantly.
  • Users love the ease of use of KnowBe4, enjoying seamless integration and intuitive navigation for all personnel.
  • Users commend the detection efficiency of KnowBe4 Email Security, successfully mitigating phishing and ransomware threats effectively.
Cons
  • Users find the dashboard's UI confusing, impacting navigation and integration with other Egress products.
  • Users desire a more effective email filtering system to prevent malicious emails from bypassing security measures.
  • Users find support interactions challenging, often requiring more proactive solutions to effectively block phishing emails.
  • Users desire a more effective blocking of phishing emails, citing instances of harmful emails still reaching inboxes.
  • Users notice that false positives occasionally occur, allowing some malicious emails to slip through the security filters.

What Are Recent G2 Reviews of KnowBe4 Email & Collaboration Security?

What Are G2 Users Discussing About KnowBe4 Email & Collaboration Security?

Barracuda Impersonation Protection

Impersonation Protection protects against business email compromise, account takeover, spear phishing, and other cyber fraud. It combines artificial intelligence and deep integration with Microsoft Office 365 into a comprehensive cloud-based solution. Impersonation Protection’s unique API-based architecture lets the AI engine study historical email and learn users’ unique communication patterns. It blocks phishing attacks that harvest credentials and lead to account takeover and enables real-time remediation.

Average Rating: 4.5/5.0

Total Reviews: 88

How Do G2 Users Rate Barracuda Impersonation Protection?

  • Has the product been a good partner in doing business?: 9.0/10 (Category avg: 9.1/10)
  • Quality of Support: 8.9/10 (Category avg: 9.0/10)
  • Ease of Admin: 9.0/10 (Category avg: 8.9/10)
  • Ease of Use: 8.8/10 (Category avg: 9.0/10)

Who Is the Company Behind Barracuda Impersonation Protection?

  • Seller: Barracuda
  • Year Founded: 2002
  • HQ Location: Campbell, CA
  • LinkedIn® Page: www.linkedin.com
    2,327 employees on LinkedIn®
  • Ownership: Private

Who Uses This Product?

  • Who Uses This: Systems Administrator
  • Top Industries: Information Technology and Services, Higher Education
  • Company Size: 67% Medium, 17% Small

What Do G2 Reviewers Say About Barracuda Impersonation Protection?

AI-generated summary from verified user reviews

Pros
  • Users value the effective phishing protection that keeps their business resources secure and enhances overall email safety.
  • Users value the ease of use of Barracuda Impersonation Protection, finding its interface and integration seamless.
  • Users value the immediate notifications from Barracuda Impersonation Protection, enhancing security against potential threats effectively.
  • Users find the setup ease of Barracuda Impersonation Protection outstanding, allowing quick integration and immediate functionality.
  • Users rave about the outstanding customer support, always ready to assist with any issues promptly and efficiently.
Cons
  • Users experience frequent false positives with Barracuda Impersonation Protection, causing legitimate emails to be misclassified as threats.
  • Users find the admin system complicated, making it challenging to navigate Barracuda Impersonation Protection effectively.
  • Users report inadequate protection from Barracuda Impersonation Protection, noting missed fraudulent emails and excessive false positives.
  • Users find the admin interface complicated, leading to confusion and difficulty configuring reporting for Barracuda Impersonation Protection.
  • Users find the configuration difficulties of Barracuda Impersonation Protection can hinder effective management and usability.

What Are Recent G2 Reviews of Barracuda Impersonation Protection?

What Are G2 Users Discussing About Barracuda Impersonation Protection?

Lauren Worth
LW
Researched and written by Lauren Worth
Updated October 3, 2024