Top Free Email Anti-spam Software

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

Total Products under this Category: 119

Category Stats (Sep 2026)

  • Average Rating: 4.46/5 The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: Darktrace / EMAIL (+1.92%) - Among all products in this category, Darktrace / EMAIL recorded the largest rating increase compared to last month

Last updated: September 29, 2026

How Does G2 Rank Email Anti-spam Software Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 6,200+ Authentic Reviews
  • 119+ 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, Microsoft Defender for Office 365, Valimail, SaneBox, Abnormal AI, Paubox, 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=microsoft-microsoft-defender-for-office-365&focus%5B%5D=valimail&focus%5B%5D=sanebox&focus%5B%5D=abnormal-ai&focus%5B%5D=paubox&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: 615

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
  • Twitter: @proofpoint
    31,157 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    5,261 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: Information Security Analyst, IT Security Engineer
  • Top Industries: Financial Services, Hospital & Health Care
  • Company Size: 66% Large, 29% Medium

What Do G2 Reviewers Say About Proofpoint Core Email Protection?

AI-generated summary from verified user reviews

Pros
  • Users highlight the exceptional malware protection provided by Proofpoint Core Email Protection, ensuring robust security and support.
  • Users value the reliable email security of Proofpoint Core Email Protection, ensuring peace of mind at work.
  • Users value the ease of use in Proofpoint Core Email Protection, appreciating its simple interface and effective security.
  • Users value the effective anti-phishing and anti-malware capabilities of Proofpoint, ensuring robust email security from day one.
  • Users value the effective security of Proofpoint Core Email Protection, ensuring reliable email safety for their environment.
Cons
  • Users find the outdated interface of Proofpoint Core Email Protection to be overwhelming and not user-friendly.
  • Users find the user interface confusing with many portals, although improvements are planned in the future.
  • Users experience intermittent email access issues and slow updates, along with challenges from false positives and misdirected emails.
  • Users find the complexity of Proofpoint Core Email Protection overwhelming and cumbersome, especially with its configurations.
  • Users report a high rate of false positives, causing legitimate emails to be flagged as spam frequently.

What Are Recent G2 Reviews of Proofpoint Core Email Protection?

What Are G2 Users Discussing About Proofpoint Core Email Protection?

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: 666

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
  • Twitter: @ValiMail
    1,110 Twitter followers
  • 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, 33% Medium

What Do G2 Reviewers Say About Valimail?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the ease of use of Valimail, benefiting from its intuitive dashboard and automated tools.
  • Users value Valimail's automated DMARC enforcement, enhancing email security and simplifying the management process significantly.
  • Users praise the easy setup of Valimail, appreciating the straightforward process and helpful customer support during implementation.
  • Users appreciate the easy setup of Valimail, enabling quick configuration and effective DMARC management.
  • Users praise the brilliant reporting features of Valimail, enhancing security and simplifying domain management.
Cons
  • Users find Valimail expensive, especially small businesses struggling with additional costs for necessary features and subscriptions.
  • Users find Valimail's reporting limited and lacking in detail, reducing its effectiveness for audits and reviews.
  • Users find the complexity of Valimail's setup and learning curve challenging, especially for non-technical users.
  • Users find a lack of detail in Valimail's reporting and tier access, complicating their overall experience.
  • Users express concerns about the lack of advanced features, such as MTA-STS management and DKIM key management.

What Are Recent G2 Reviews of Valimail?

What Are G2 Users Discussing About Valimail?

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: 644

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
  • Twitter: @PauboxHQ
    16,577 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    47 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, finding it simple to set up and integrate seamlessly.
  • Users value the seamless security of Paubox, enhancing peace of mind while handling sensitive information effectively.
  • Users commend the fantastic customer support from Paubox, highlighting their responsiveness and dedication to user satisfaction.
  • Users value the peace of mind from Paubox's email security, ensuring HIPAA compliance and protecting sensitive information.
  • Users find the setup ease of Paubox refreshing, enjoying quick integration and excellent customer support.
Cons
  • Users find Paubox to be expensive, noting pricing concerns despite the perceived value and available incentives.
  • Users experience occasional email delivery issues with Paubox, causing frustrations with missed messages and bounces.
  • Users find Paubox setup to be difficult, though the support team provides helpful guidance during the process.
  • Users find the email encryption visibility inadequate, as clients hesitate due to how different the emails appear.
  • Users feel there are encryption visibility issues that could lead to confusion for recipients about email security.

What Are Recent G2 Reviews of Paubox?

What Are G2 Users Discussing About Paubox?

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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: 241

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
  • Twitter: @sanebox
    9,146 Twitter followers
  • 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 appreciate the ease of use of SaneBox, enjoying its effective auto sorting and simple initial setup.
  • Users appreciate the effective inbox management of SaneBox, simplifying email organization and promoting a clear workflow.
  • Users appreciate the auto sorting and mass delete features of SaneBox, effectively keeping their inbox organized.
  • Users praise SaneBox for its efficiency in organizing emails and achieving inbox zero effortlessly.
  • Users highlight the easy setup of SaneBox, finding it straightforward and efficient for managing their inbox.
Cons
  • Users find SaneBox expensive, especially when adding multiple accounts, impacting its overall value perception.
  • Users find the lack of training requires time and oversight, as the AI still misses some spam.
  • Users report a steep learning curve, requiring time to train the AI for effective spam filtering.
  • Users desire more features and customization in SaneBox, feeling the current set is limited for the price.
  • Users feel SaneBox lacks adequate AI features, requiring manual checking and limiting customization options.

What Are Recent G2 Reviews of SaneBox?

What Are G2 Users Discussing About SaneBox?

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: 88

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
    1,465 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Financial Services, Information Technology and Services
  • Company Size: 47% Large, 42% Medium

What Do G2 Reviewers Say About Abnormal AI?

AI-generated summary from verified user reviews

Pros
  • Users commend the ease of use of Abnormal AI, finding it simplifies workflows with a seamless setup process.
  • Users highlight the excellent customer support provided by Abnormal AI, enhancing their overall experience and effectiveness.
  • Users commend the easy setup of Abnormal AI, enabling quick activation and effortless email protection.
  • Users commend Abnormal AI for its exceptional detection efficiency, effectively blocking sophisticated email threats effortlessly.
  • Users appreciate the automated email monitoring of Abnormal AI, significantly reducing manual review time and improving efficiency.
Cons
  • Users experience email filtering issues with Abnormal AI, including persistence of filters and occasional misflagging of legitimate emails.
  • Users experience email delivery delays with Abnormal AI, leading to confusion and potential security risks with threats.
  • Users experience frequent false positives with Abnormal AI, causing confusion and requiring manual review for legitimate emails.
  • Users note the need for improved reporting features, as filtering settings often do not persist, complicating usability.
  • Users express a desire for pre-delivery action on emails, as it briefly shows in mailboxes before remediation.

What Are Recent G2 Reviews of Abnormal AI?

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 simple configuration and efficient dashboard.
  • Users appreciate the fast, reliable support of LibraCyber Email Security, enhancing their overall experience and management capabilities.
  • Users find the effective spam filter and advanced security features of LibraCyber Email Security invaluable for safeguarding their emails.
  • Users commend the remarkable effectiveness of LibraCyber Email Security, enhancing email protection with advanced features and support.
  • Users rave about the setup ease of LibraCyber Email Security, benefiting from quick configuration and minimal spam.
Cons
  • Users find the complexity of setup and configuration in LibraCyber Email Security to be a significant hurdle.
  • Users find the user interface sluggish and unintuitive, impacting their overall experience with LibraCyber Email Security.
  • Users express frustration over access issues limiting advanced troubleshooting and preventing necessary OS-level interventions.
  • Users find the difficult setup of LibraCyber Email Security challenging, especially for those lacking experience with email systems.
  • Users experience email delivery issues due to SPF/DKIM problems and occasional filter bypasses, requiring manual adjustments.

What Are Recent G2 Reviews of LibraCyber Email Security?

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: 32

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
  • Twitter: @sublime_sec
    2,478 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    306 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Computer Software, Information Technology and Services
  • Company Size: 56% Large, 22% 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 Sublime Email Security Platform, simplifying onboarding and deployment for effective email protection.
  • Users value the high detection efficiency of Sublime, leading to cleaner inboxes and better threat response.
  • Users appreciate the easy setup of Sublime Email Security Platform, streamlining onboarding and reducing implementation time significantly.
  • Users commend the easy setup of Sublime Email Security Platform, enabling quick onboarding and seamless automation.
  • Users value the flexibility and customization options in the Sublime Email Security Platform for tailored solutions.
Cons
  • Users find the missing features concerning, particularly delays in planned functionalities and functionality limitations with various email systems.
  • Users note a steep learning curve with the rule language, requiring time to effectively refine detection logic.
  • Users face a steep learning curve in mastering Sublime's capabilities, requiring time to refine detection logic.
  • Users note limited features, including US-only data processing and absence of outbound capabilities, impacting their needs.
  • Users find the learning difficulty of Sublime Email Security Platform challenging, requiring time and effort to master MQL.

What Are Recent G2 Reviews of Sublime Email Security Platform?

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: 66

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
  • Twitter: @IRONSCALES
    3,518 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    177 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, benefiting from its quick integration and effective phishing protection.
  • Users benefit from strong phishing protection with IRONSCALES, effectively reducing scam and spam emails.
  • Users value the easy implementation of IRONSCALES, which enhances email security and reduces administrative overhead.
  • Users love the easy setup of IRONSCALES, allowing quick implementation and immediate phishing detection.
  • Users highly value the outstanding customer support from IRONSCALES, ensuring prompts assistance and a secure email experience.
Cons
  • Users occasionally experience false positives, which can be a minor inconvenience in email security management.
  • Users experience poor detection issues with IRONSCALES, as urgent alerts sometimes fail and incidents may be misclassified.
  • Users note the limited features of IRONSCALES, particularly in customization and user access roles, impacting usability.
  • Users find the difficult training modules lack comprehensive overview, causing minor inconvenience during the learning process.
  • Users express concern over email filtering issues, fearing potential risks before automatic remediation takes place.

What Are Recent G2 Reviews of IRONSCALES?

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: 65

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: 8.8/10 (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
  • Twitter: @Hornetsecurity
    1,115 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    562 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Computer & Network Security, Information Technology and Services
  • Company Size: 49% Small, 46% Medium

What Do G2 Reviewers Say About Hornetsecurity 365 Total Protection?

AI-generated summary from verified user reviews

Pros
  • Users value the robust email protection of Hornetsecurity 365, appreciating its seamless integration and spam management features.
  • Users value the robust email protection provided by Hornetsecurity 365, effectively safeguarding against spam and malware.
  • Users highlight the ease of use of Hornetsecurity 365 Total Protection, appreciating its simple setup and effective management.
  • Users value the multi-layered malware protection of Hornetsecurity 365 Total Protection, enhancing email security significantly.
  • Users value the seamless integration with Office 365, enhancing email protection and user experience effortlessly.
Cons
  • Users find the user interface too complex, making it hard to navigate and locate essential documentation.
  • Users find the confusing interface and unclear settings hinder overall user experience and usability.
  • Users find the complexity of settings and admin roles challenging, leading to a complicated overall experience.
  • Users face configuration difficulties with Hornetsecurity 365 Total Protection, requiring significant effort to customize settings effectively.
  • Users find the difficult setup challenging, requiring extensive reading and navigation to achieve optimal performance.

What Are Recent G2 Reviews of Hornetsecurity 365 Total Protection?

What Are G2 Users Discussing About Hornetsecurity 365 Total Protection?

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: 73

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
  • Twitter: @KnowBe4
    16,161 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    2,642 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Hospital & Health Care, Information Technology and Services
  • Company Size: 54% Medium, 29% Small

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

AI-generated summary from verified user reviews

Pros
  • Users appreciate the effective protection KnowBe4 Cloud Email Security provides against email threats, enhancing overall security awareness.
  • Users praise KnowBe4 Cloud Email Security for its effective protection against email threats and seamless integration, enhancing security.
  • Users appreciate the effective customer support of KnowBe4 Cloud Email Security, ensuring smooth onboarding and assistance throughout use.
  • Users appreciate the ease of use of KnowBe4 Cloud Email Security, especially during setup and navigation of the admin console.
  • Users value the high detection efficiency of KnowBe4 Cloud Email Security, which effectively mitigates email threats.
Cons
  • Users find the dashboard lacks usability, feeling it complicates navigation and integration with Egress products.
  • Users wish for a more effective email filtering system, as some dangerous emails still bypass protection measures.
  • Users find support challenging and report missed filtering of malicious emails despite the system's effectiveness.
  • Users wish for a more forceful blocking of phishing emails, as some still get through the filters.
  • Users experience false positives, as some dangerous emails occasionally bypass filters, causing security concerns.

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: 86

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: 9.0/10 (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
  • Twitter: @Barracuda
    15,239 Twitter followers
  • 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?

Barracuda Email Gateway Defense

In today’s complex cyber-threat environment, you need an email security solution that delivers comprehensive security against sophisticated attacks while also being easy to deploy, configure, and manage. Barracuda provides cloud-based protection against advanced email attacks, helps ensure email continuity and scans outgoing email to prevent data loss - all without the need to install any additional hardware or software.

Average Rating: 4.2/5.0

Total Reviews: 38

How Do G2 Users Rate Barracuda Email Gateway Defense?

  • Has the product been a good partner in doing business?: 8.6/10 (Category avg: 9.1/10)
  • Quality of Support: 8.8/10 (Category avg: 9.0/10)
  • Ease of Admin: 8.8/10 (Category avg: 8.9/10)
  • Ease of Use: 8.9/10 (Category avg: 9.0/10)

Who Is the Company Behind Barracuda Email Gateway Defense?

  • Seller: Barracuda
  • Year Founded: 2002
  • HQ Location: Campbell, CA
  • Twitter: @Barracuda
    15,239 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    2,327 employees on LinkedIn®
  • Ownership: Private

Who Uses This Product?

  • Top Industries: Hospital & Health Care, Information Technology and Services
  • Company Size: 57% Medium, 28% Large

What Do G2 Reviewers Say About Barracuda Email Gateway Defense?

AI-generated summary from verified user reviews

Pros
  • Users value the ease of use of Barracuda Email Gateway Defense for efficiently managing emails and preventing phishing.
  • Users praise the ease of use of Barracuda Email Gateway Defense, facilitating quick email investigation and management.
  • Users value the effective phishing protection of Barracuda Email Gateway Defense for managing spam and enhancing email security.
  • Users value the effective protection of Barracuda Email Gateway Defense against spam and phishing, enhancing security effortlessly.
  • Users value the effective spam blocking capabilities of Barracuda, ensuring a secure email environment with minimal admin effort.
Cons
  • Users face access issues as Barracuda Email Gateway Defense lacks support for Google authentication for managing quarantines.
  • Users find the complexity of operations and settings challenging, particularly for those not using Office 365.
  • Users find the complex navigation challenging, hindering their ability to easily access and manage rulesets.
  • Users face configuration difficulties as whitelisted emails occasionally get blocked, requiring adjustments to settings for resolution.
  • Users find the dashboard design odd and hope for improvements in future updates.

What Are Recent G2 Reviews of Barracuda Email Gateway Defense?

What Are G2 Users Discussing About Barracuda Email Gateway Defense?

Cloudflare One (SASE)

Cloudflare One is a single-vendor secure access service edge (SASE) platform that converges security and networking services into a unified, global connectivity cloud. It replaces legacy, fragmented hardware and first-generation SASE solutions with a composable, programmable architecture. Cloudflare One connects and protects an organization's workforce, AI agents, and infrastructure. Learn more at https://www.cloudflare.com/sase/ Designed for agility, it enables teams to: - Accelerate safe AI adoption with granular visibility, control, and AI agent governance. - Modernize remote access by replacing clunky VPNs with zero trust access. - Block email phishing attacks with flexible, SASE-native email security. - Protect web traffic for remote users and branch offices with lightweight DNS filtering. - Deploy “coffee shop networking” with a light branch, heavy cloud approach.

Average Rating: 4.6/5.0

Total Reviews: 102

How Do G2 Users Rate Cloudflare One (SASE)?

  • Has the product been a good partner in doing business?: 9.5/10 (Category avg: 9.1/10)
  • Quality of Support: 9.2/10 (Category avg: 9.0/10)
  • Ease of Admin: 9.1/10 (Category avg: 8.9/10)
  • Ease of Use: 9.1/10 (Category avg: 9.0/10)

Who Is the Company Behind Cloudflare One (SASE)?

  • Seller: Cloudflare, Inc.
  • Year Founded: 2009
  • HQ Location: San Francisco, California
  • Twitter: @Cloudflare
    286,254 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    8,094 employees on LinkedIn®
  • Ownership: NYSE: NET

Who Uses This Product?

  • Top Industries: Information Technology and Services, Computer & Network Security
  • Company Size: 38% Small, 35% Medium

What Do G2 Reviewers Say About Cloudflare One (SASE)?

AI-generated summary from verified user reviews

Pros
  • Users value the ease of use of Cloudflare One, appreciating its intuitive design and seamless integration with existing systems.
  • Users praise the excellent threat protection of Cloudflare One, ensuring security without compromising performance.
  • Users value the reliability of Cloudflare One, ensuring consistent performance and security for seamless operations.
  • Users value the superior security features of Cloudflare One, enhancing protection and performance seamlessly across networks.
  • Users appreciate the intuitive and unified user interface of Cloudflare One, simplifying management for IT teams.
Cons
  • Users find a steep learning curve with Cloudflare One, as onboarding and feature familiarity can be challenging.
  • Users find the complexity of Cloudflare One's setup and documentation to hinder their onboarding experience.
  • Users find the difficult learning curve of Cloudflare One challenging, especially for new and advanced features.
  • Users note a difficult learning curve for Cloudflare One, particularly with its dashboard and policy setup complexities.
  • Users face a difficult setup process in Cloudflare One, often struggling with complexity and incomplete documentation.

What Are Recent G2 Reviews of Cloudflare One (SASE)?

What Are G2 Users Discussing About Cloudflare One (SASE)?

CyberSentriq

CyberSentriq is an integrated cybersecurity and data protection platform, leveraging solutions from two best-of breed vendors in the MSP space. Partnering with over 3,000 MSPs and protecting over 150,000 SMBs globally, CyberSentriq provides an unmatched combination of proactive AI-driven email and web security, advanced data protection, and operational resilience. The CyberSentriq platform offers: - Data backup & recovery for Microsoft M365 & Entra ID, Azure, Google workspace and more - AI-driven threat intelligence and detection - Advanced email security at both the Mail Exchange (MX) and Integrated Cloud Email Security (ICES) layers. - Security awareness services - Phishing simulation - Email archiving and encryption

Average Rating: 4.6/5.0

Total Reviews: 385

How Do G2 Users Rate CyberSentriq?

  • Has the product been a good partner in doing business?: 9.4/10 (Category avg: 9.1/10)
  • Quality of Support: 9.1/10 (Category avg: 9.0/10)
  • Ease of Admin: 9.2/10 (Category avg: 8.9/10)
  • Ease of Use: 9.3/10 (Category avg: 9.0/10)

Who Is the Company Behind CyberSentriq?

  • Seller: CyberSentriq
  • Company Website:
  • Year Founded: 2025
  • HQ Location: Galway ,Galway
  • Twitter: @Redstor
    1,949 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    206 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: IT Manager, Director
  • Top Industries: Information Technology and Services, Computer & Network Security
  • Company Size: 47% Medium, 41% Small

What Do G2 Reviewers Say About CyberSentriq?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the ease of use of CyberSentriq, benefiting from its user-friendly interface and efficient cloud solutions.
  • Users commend the exceptional restore capability of CyberSentriq, allowing versatile recovery across multiple platforms effortlessly.
  • Users love the ease of tracking and reviewing backups with Redstore, enhancing data management efficiency and reliability.
  • Users value the exceptional backup and restore features of CyberSentriq, ensuring efficient data recovery across platforms.
  • Users appreciate the reliable daily backups of CyberSentriq, ensuring quick access and minimal downtime during recovery.
Cons
  • Users face backup issues due to vague reporting and no scheduled backups on user endpoints, complicating restoration efforts.
  • Users express the need for improved reporting features in CyberSentriq for better troubleshooting and transparency.
  • Users find the reporting inadequate for troubleshooting, lacking detail needed for effective error resolution and analysis.
  • Users struggle with backup failures, finding error resolution tedious and reporting on Office 365 insufficient for troubleshooting.
  • Users find the reporting issues in CyberSentriq unsatisfactory, lacking detail and options for effective auditing.

What Are Recent G2 Reviews of CyberSentriq?

What Are G2 Users Discussing About CyberSentriq?

INKY Email Security Platform

INKY is the behavioral email security platform that blocks threats, prevents data leaks, and coaches users to make smart decisions. Like a security coach, it signals suspicious behaviors with interactive banners that guide users to take safe action on any device or email client. IT teams don’t face the burden of filtering every email themselves or maintaining multiple systems. Through powerful technology and intuitive user engagement, INKY keeps bad actors out for good. Smarter AI-powered email security, beyond Graphus.

Average Rating: 4.2/5.0

Total Reviews: 116

How Do G2 Users Rate INKY Email Security Platform?

  • Has the product been a good partner in doing business?: 8.7/10 (Category avg: 9.1/10)
  • Quality of Support: 8.6/10 (Category avg: 9.0/10)
  • Ease of Admin: 8.8/10 (Category avg: 8.9/10)
  • Ease of Use: 8.7/10 (Category avg: 9.0/10)

Who Is the Company Behind INKY Email Security Platform?

  • Seller: Kaseya
  • Company Website:
  • Year Founded: 2000
  • HQ Location: Miami, FL
  • Twitter: @KaseyaCorp
    17,411 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    5,483 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Information Technology and Services, Computer & Network Security
  • Company Size: 55% Small, 33% Medium

What Do G2 Reviewers Say About INKY Email Security Platform?

AI-generated summary from verified user reviews

Pros
  • Users value the cross-platform compatibility of INKY Email Security, seamlessly integrating with Microsoft for enhanced functionality.
  • Users praise the seamless integration of INKY Email Security Platform with Microsoft, enhancing their overall experience.
  • Users appreciate the easy integrations of INKY Email Security Platform, especially its seamless compatibility with Microsoft.
  • Users praise the seamless integration with Microsoft, enhancing their experience with INKY Email Security Platform.
  • Users value the seamless integration with Microsoft, enhancing their experience with the INKY Email Security Platform.
Cons
  • Users find setup for Google tricky, but they acknowledge the platform's overall excellence and effectiveness.
  • Users find the difficult setup for INKY Email Security Platform challenging, despite its otherwise flawless performance.

What Are Recent G2 Reviews of INKY Email Security Platform?

What Are G2 Users Discussing About INKY Email Security Platform?

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