Best Email Anti-spam Software - Page 3

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)

Symantec Email Security.Cloud

Safeguard your cloud-based email with our industry-leading threat and anti-spam protection for Office 365, Google Apps, and more.

Average Rating: 4.1/5.0

Total Reviews: 60

How Do G2 Users Rate Symantec Email Security.Cloud?

  • Has the product been a good partner in doing business?: 8.2/10 (Category avg: 9.1/10)
  • Quality of Support: 7.9/10 (Category avg: 9.0/10)
  • Ease of Admin: 7.9/10 (Category avg: 8.9/10)
  • Ease of Use: 8.0/10 (Category avg: 9.0/10)

Who Is the Company Behind Symantec Email Security.Cloud?

  • Seller: Broadcom
  • Year Founded: 1991
  • HQ Location: San Jose, CA
  • LinkedIn® Page: www.linkedin.com
    44,602 employees on LinkedIn®
  • Ownership: NASDAQ: CA
  • Phone: +1 800 225-5224

Who Uses This Product?

  • Top Industries: Information Technology and Services, Computer & Network Security
  • Company Size: 39% Large, 38% Medium

What Are Recent G2 Reviews of Symantec Email Security.Cloud?

What Are G2 Users Discussing About Symantec Email Security.Cloud?

Symantec Messaging Gateway

Secure your email with our powerful advanced threat protection and anti-spam solution for on-premises messaging environments.

Average Rating: 3.9/5.0

Total Reviews: 15

How Do G2 Users Rate Symantec Messaging Gateway?

  • Has the product been a good partner in doing business?: 8.3/10 (Category avg: 9.1/10)
  • Quality of Support: 7.4/10 (Category avg: 9.0/10)
  • Ease of Admin: 7.5/10 (Category avg: 8.9/10)
  • Ease of Use: 8.2/10 (Category avg: 9.0/10)

Who Is the Company Behind Symantec Messaging Gateway?

  • Seller: Broadcom
  • Year Founded: 1991
  • HQ Location: San Jose, CA
  • LinkedIn® Page: www.linkedin.com
    44,602 employees on LinkedIn®
  • Ownership: NASDAQ: CA
  • Phone: +1 800 225-5224

Who Uses This Product?

  • Top Industries: Information Technology and Services
  • Company Size: 43% Medium, 33% Large

What Are Recent G2 Reviews of Symantec Messaging Gateway?

What Are G2 Users Discussing About Symantec Messaging Gateway?

Avast Small Business Cybersecurity Solutions

Essential cyber protection and security control for your small business Avast Essential Business Security helps deliver device security for small businesses that want remote visibility and centrally controlled protection against viruses, phishing, ransomware, and advanced cyberattacks.  Avast Small Business Solutions deliver next-gen endpoint protection for business Windows PCs, Mac, and Windows servers that you can manage anywhere via a web browser. Our robust, easy-to-use security for devices and data is designed to keep small organizations and their employees safer online. Avast antivirus with multiple layers of security, online privacy, and remote-control features provides powerful cybersecurity controlled via a cloud-based management console.

Average Rating: 4.3/5.0

Total Reviews: 109

How Do G2 Users Rate Avast Small Business Cybersecurity Solutions?

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

Who Is the Company Behind Avast Small Business Cybersecurity Solutions?

  • Seller: Gen Digital
  • Year Founded: 2022
  • HQ Location: Tempe, Arizona
  • LinkedIn® Page: www.linkedin.com
    3,497 employees on LinkedIn®
  • Ownership: NASDAQ: GEN

Who Uses This Product?

  • Who Uses This: IT Manager
  • Top Industries: Information Technology and Services, Computer Software
  • Company Size: 42% Medium, 39% Small

What Do G2 Reviewers Say About Avast Small Business Cybersecurity Solutions?

AI-generated summary from verified user reviews

Pros
  • Users value the customization options in Avast, allowing tailored security policies that improve workflow and protection.
  • Users value the real-time monitoring of Avast, enabling effective and easy management of their cybersecurity needs.
  • Users value the robust cyber threat protection of Avast, ensuring easy management and security for their growing teams.
  • Users value the robust cyber threat protection of Avast, appreciating its ease of use and scalability for growth.
  • Users appreciate the accessible and user-friendly interface of Avast, which simplifies security management for all team members.
Cons
  • Users find the initial setup and compatibility a bit complex, leading to frustration during the onboarding process.
  • Users find the complex installation process challenging, particularly during initial setup and compatibility checks.
  • Users find the initial setup and compatibility to be somewhat complex, which can hinder their experience with Avast.
  • Users find the initial setup too complex, leading to challenges with compatibility and a steep learning curve.
  • Users experience inadequate protection on older devices due to occasional performance issues with Avast Small Business Cybersecurity Solutions.

What Are Recent G2 Reviews of Avast Small Business Cybersecurity Solutions?

What Are G2 Users Discussing About Avast Small Business Cybersecurity Solutions?

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Security Gateway

SecurityGateway™ protects all email platforms, including Microsoft Exchange, Microsoft 365, and others. Let our team of email security experts take the headache out of managing your company's email security needs. SecurityGateway utilizes the latest email threat detection technology and policy enforcement tools to ensure that good emails continue to flow to and from your users. Security Gateway can be deployed as an on-premise solution, or our cloud service can be deployed quickly and easily, allowing you to focus on other essential tasks. MSPs can also utilize our SaaS option to offer their clients a white-label, multi-tenant email security platform.

Average Rating: 4.6/5.0

Total Reviews: 35

How Do G2 Users Rate Security Gateway?

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

Who Is the Company Behind Security Gateway?

Who Uses This Product?

  • Company Size: 51% Small, 31% Medium

What Are Recent G2 Reviews of Security Gateway?

What Are G2 Users Discussing About Security Gateway?

Proofpoint Essentials for Small Business

Proofpoint Essentials for Small Business is a cloud-based enterprise-class security for small and medium enterprises with email security, continuity, archiving, and social-media protection.

Average Rating: 4.0/5.0

Total Reviews: 23

How Do G2 Users Rate Proofpoint Essentials for Small Business?

  • Has the product been a good partner in doing business?: 8.9/10 (Category avg: 9.1/10)
  • Quality of Support: 8.2/10 (Category avg: 9.0/10)
  • Ease of Admin: 8.5/10 (Category avg: 8.9/10)
  • Ease of Use: 8.8/10 (Category avg: 9.0/10)

Who Is the Company Behind Proofpoint Essentials for Small Business?

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

Who Uses This Product?

  • Top Industries: Information Technology and Services
  • Company Size: 54% Medium, 38% Small

What Are Recent G2 Reviews of Proofpoint Essentials for Small Business?

What Are G2 Users Discussing About Proofpoint Essentials for Small Business?

Zix Email Threat Protection

Zix Email Threat Protection takes out the guess work with protection from ransomware, malware, spearphishing, and more to keep your email, employees, and business safe from the latest threats.

Average Rating: 4.6/5.0

Total Reviews: 11

How Do G2 Users Rate Zix Email Threat 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: 9.1/10 (Category avg: 9.0/10)

Who Is the Company Behind Zix Email Threat Protection?

  • Seller: OpenText
  • Year Founded: 1991
  • HQ Location: Waterloo, ON
  • LinkedIn® Page: www.linkedin.com
    22,835 employees on LinkedIn®
  • Ownership: NASDAQ:OTEX
  • Phone: +1-519-888-7111

Who Uses This Product?

  • Company Size: 45% Medium, 36% Small

What Are Recent G2 Reviews of Zix Email Threat Protection?

Phish Protection by DuoCircle

Phish Protection Email Security with Advanced Threat Protection, is a cloud-based email protection suite for your businesses - that stops phishing attacks, malware, ransomware, viruses via email, malicious links, fraud, spam, spoofing and other malicious threats over email - all in real-time, and without the need to install any expensive tools or software.

Average Rating: 4.7/5.0

Total Reviews: 43

How Do G2 Users Rate Phish Protection by DuoCircle?

  • Has the product been a good partner in doing business?: 9.7/10 (Category avg: 9.1/10)
  • Quality of Support: 9.5/10 (Category avg: 9.0/10)
  • Ease of Admin: 9.2/10 (Category avg: 8.9/10)
  • Ease of Use: 9.1/10 (Category avg: 9.0/10)

Who Is the Company Behind Phish Protection by DuoCircle?

Who Uses This Product?

  • Top Industries: Computer & Network Security, Information Technology and Services
  • Company Size: 63% Small, 35% Medium

What Are Recent G2 Reviews of Phish Protection by DuoCircle?

What Are G2 Users Discussing About Phish Protection by DuoCircle?

AVG Internet Security Business Edition

More powerful than ever, our latest edition works even harder and smarter for you and your business. It comes with - * Accelerated scanning engine * Link protection * Enhanced Firewall * Advanced encryption for your critical folders and files * Secure deletion of unwanted files * Protects against Ransom ware * Email Server Security * Email Protection * Remote admin Tools * 24/7 support

Average Rating: 4.2/5.0

Total Reviews: 34

How Do G2 Users Rate AVG Internet Security Business Edition?

  • Has the product been a good partner in doing business?: 7.9/10 (Category avg: 9.1/10)
  • Quality of Support: 8.1/10 (Category avg: 9.0/10)
  • Ease of Admin: 8.3/10 (Category avg: 8.9/10)
  • Ease of Use: 9.3/10 (Category avg: 9.0/10)

Who Is the Company Behind AVG Internet Security Business Edition?

  • Seller: Gen Digital
  • Year Founded: 2022
  • HQ Location: Tempe, Arizona
  • LinkedIn® Page: www.linkedin.com
    3,497 employees on LinkedIn®
  • Ownership: NASDAQ: GEN

Who Uses This Product?

  • Top Industries: Information Technology and Services
  • Company Size: 60% Small, 23% Large

What Are Recent G2 Reviews of AVG Internet Security Business Edition?

What Are G2 Users Discussing About AVG Internet Security Business Edition?

Proofpoint Adaptive Email Security

The Tessian Cloud Email Security Platform intelligently protects against advanced threats and data loss on email, while reducing security teams' workloads, and coaching people about security threats in the moment. Using Behavioral Intelligence Modeling and machine learning, Tessian automatically detects and prevents threats that legacy Secure Email Gateways fail to stop, including advanced phishing attacks, email impersonation, accidental data loss and insider threats. We ensure security teams can work smarter, not harder. Tessian automates the investigation and remediation of email threats, freeing up the security team's time and in-the-moment security coaching educates users in real-time to help them make more informed security decisions. As a cloud-native solution, Tessian Security Platform integrates seamlessly with Microsoft 365, Microsoft Exchange, and Google Workspace environments. Tessian is a fully automated platform that requires zero configuration, is deployed in minutes, and learns people’s email behaviors within hours, closing critical security gaps in the enterprise security stack. Email is the number one threat vector in the enterprise, and security teams can no longer rely on traditional email security solutions to keep their organization safe. Tessian’s intelligent technology stops advanced threats and prevents data loss, strengthening email security and building a stronger security culture.

Average Rating: 4.6/5.0

Total Reviews: 45

How Do G2 Users Rate Proofpoint Adaptive Email Security?

  • Has the product been a good partner in doing business?: 9.3/10 (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: 8.8/10 (Category avg: 9.0/10)

Who Is the Company Behind Proofpoint Adaptive Email Security?

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

Who Uses This Product?

  • Top Industries: Financial Services, Legal Services
  • Company Size: 58% Medium, 42% Large

What Do G2 Reviewers Say About Proofpoint Adaptive Email Security?

AI-generated summary from verified user reviews

Pros
  • Users praise the outstanding customer support of Proofpoint Adaptive Email Security, enhancing their overall experience and satisfaction.
  • Users appreciate the user-friendly design of Proofpoint Adaptive Email Security, making security management effortless and efficient.
  • Users appreciate the comprehensive array of security features offered by Proofpoint Adaptive Email Security, ensuring robust protection.
  • Users commend the excellent product quality of Proofpoint Adaptive Email Security, benefiting from its user-friendly design and robust features.
  • Users value the robust protection offered by Proofpoint Adaptive Email Security, ensuring a secure email environment.
Cons
  • Users find the cost of Proofpoint Adaptive Email Security to be higher compared to similar products on the market.

What Are Recent G2 Reviews of Proofpoint Adaptive Email Security?

MailWasher

MailWasher allows to preview and delete unwanted email from an unlimited number of accounts, before it reaches inbox.

Average Rating: 4.0/5.0

Total Reviews: 17

How Do G2 Users Rate MailWasher?

  • Quality of Support: 8.1/10 (Category avg: 9.0/10)
  • Ease of Use: 8.8/10 (Category avg: 9.0/10)

Who Is the Company Behind MailWasher?

Who Uses This Product?

  • Company Size: 67% Medium, 28% Small

What Are Recent G2 Reviews of MailWasher?

IronVest InboxGuard

IronVest InboxGuard, previously "Retruster", is the only AI-powered anti-phishing solution that delivers security training both contextually and in real-time on actual phishing emails that your organization might receive. We layer our solution with an immersive security training program that offers consistently updated, relevant, and highly engaging content that is specifically designed to change employee behavior and promote a strong security culture throughout your enterprise.

Average Rating: 4.8/5.0

Total Reviews: 24

How Do G2 Users Rate IronVest InboxGuard?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 9.1/10)
  • Quality of Support: 9.1/10 (Category avg: 9.0/10)
  • Ease of Admin: 7.9/10 (Category avg: 8.9/10)
  • Ease of Use: 9.5/10 (Category avg: 9.0/10)

Who Is the Company Behind IronVest InboxGuard?

Who Uses This Product?

  • Company Size: 67% Small, 29% Medium

What Are Recent G2 Reviews of IronVest InboxGuard?

What Are G2 Users Discussing About IronVest InboxGuard?

MailCleaner

MailCleaner is a professional anti spam and threats server protection for ISP, SME, SMI & large companies.

Average Rating: 4.2/5.0

Total Reviews: 12

How Do G2 Users Rate MailCleaner?

  • Quality of Support: 8.5/10 (Category avg: 9.0/10)
  • Ease of Use: 8.7/10 (Category avg: 9.0/10)

Who Is the Company Behind MailCleaner?

Who Uses This Product?

  • Company Size: 85% Small, 23% Medium

What Are Recent G2 Reviews of MailCleaner?

Xcitium

Endpoint security management is all about adequately securing such endpoints and thereby securing a network by blocking access attempts and such risky activities at endpoints.

Average Rating: 4.2/5.0

Total Reviews: 27

How Do G2 Users Rate Xcitium?

  • Has the product been a good partner in doing business?: 8.8/10 (Category avg: 9.1/10)
  • Quality of Support: 8.5/10 (Category avg: 9.0/10)
  • Ease of Admin: 9.0/10 (Category avg: 8.9/10)
  • Ease of Use: 8.2/10 (Category avg: 9.0/10)

Who Is the Company Behind Xcitium?

  • Seller: Xcitium
  • Year Founded: 2018
  • HQ Location: Clifton, NJ
  • LinkedIn® Page: www.linkedin.com
    679 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 41% Medium, 33% Small

What Do G2 Reviewers Say About Xcitium?

AI-generated summary from verified user reviews

Pros
  • Users value the affordability of Xcitium, appreciating its all-in-one platform offered at a single price.
  • Users value the affordable pricing of Xcitium, appreciating its all-in-one platform offered at a single cost.
  • Users praise the efficient customer support during deployment, resolving issues quickly and responsively.
  • Users value the easy implementation of Xcitium, appreciating its quick deployment and efficient integration into networks.
  • Users value the all-in-one platform of Xcitium, finding it convenient and cost-effective for their needs.
Cons
  • Users experience billing issues with Xcitium, as the pricing communicated does not match what is actually billed.
  • Users often face communication issues regarding pricing, finding discrepancies between quotes and actual bills.
  • Users find Xcitium's complexity challenging, requiring specialized training and causing resource issues for low-end devices.
  • Users find the pricing complicated and often face discrepancies between quoted and billed amounts.
  • Users find insufficient training a challenge, complicating the understanding of Xcitium's various functions and integrations.

What Are Recent G2 Reviews of Xcitium?

What Are G2 Users Discussing About Xcitium?

Fortra Secure Email Gateway

Secure Incoming Email. Stop Outbound Data Loss. Email remains one of the most critical and vulnerable communication channels for today’s organizations. Fortra Secure Email Gateway (SEG) is an on-premises solution designed to protect email from spam, malware, and advanced threats using a powerful deep content inspection engine that detects and neutralizes suspicious content before it causes harm. IT teams must ensure emails moving both into and out of the organization are secure, appropriate, and compliant. Fortra SEG delivers unmatched inspection depth and granular policy controls to apply the right security actions in real time, reducing the risk of data loss without slowing business communications. With advanced deep content inspection and adaptive redaction capabilities, Fortra SEG stops evasive cyber threats and prevents unintended data exposure, keeping email secure, compliant, and flowing freely. Key features of Fortra SEG include: • Multi-layer anti-virus protection • Zero-hour anti-malware detection • Cloud Sandbox from Sophos • 99.9% spam detection with dual engines • Sensitive data redaction from documents and images • Document and image sanitization • Structural and message sanitization • Lexical expression qualifiers to minimize false positives • Built-in compliance dictionaries • Choice of email encryption options

Average Rating: 4.8/5.0

Total Reviews: 18

How Do G2 Users Rate Fortra Secure Email Gateway?

  • Has the product been a good partner in doing business?: 9.3/10 (Category avg: 9.1/10)
  • Quality of Support: 9.5/10 (Category avg: 9.0/10)
  • Ease of Admin: 9.3/10 (Category avg: 8.9/10)
  • Ease of Use: 8.8/10 (Category avg: 9.0/10)

Who Is the Company Behind Fortra Secure Email Gateway?

  • Seller: Fortra
  • Year Founded: 1982
  • HQ Location: Eden Prairie, Minnesota
  • LinkedIn® Page: www.linkedin.com
    1,784 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 61% Large, 39% Medium

What Are Recent G2 Reviews of Fortra Secure Email Gateway?

What Are G2 Users Discussing About Fortra Secure Email Gateway?

Proofpoint Mail Routing Agent

Proofpoint Mail Routing Agent (MRA) provides secure, scalable, reliable email routing and management for even the most complex email infrastructures.

Average Rating: 4.6/5.0

Total Reviews: 9

How Do G2 Users Rate Proofpoint Mail Routing Agent?

  • Has the product been a good partner in doing business?: 8.3/10 (Category avg: 9.1/10)
  • Quality of Support: 9.0/10 (Category avg: 9.0/10)
  • Ease of Admin: 10.0/10 (Category avg: 8.9/10)
  • Ease of Use: 9.0/10 (Category avg: 9.0/10)

Who Is the Company Behind Proofpoint Mail Routing Agent?

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

Who Uses This Product?

  • Top Industries: Information Technology and Services
  • Company Size: 56% Large, 33% Medium

What Do G2 Reviewers Say About Proofpoint Mail Routing Agent?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the email security of Proofpoint Mail Routing Agent, effectively blocking bad links in incoming emails.
  • Users appreciate the filtering efficiency of Proofpoint Mail Routing Agent, ensuring safe and secure email delivery.
Cons
  • Users find the service effective, but note it can be expensive compared to other email routing solutions.
  • Users feel that there is limited information available regarding features, which may hinder effective utilization of the product.

What Are Recent G2 Reviews of Proofpoint Mail Routing Agent?

What Are G2 Users Discussing About Proofpoint Mail Routing Agent?

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