# Best Email Anti-spam Software - Page 4

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

**Total Products under this Category:** 119

### Category Stats (Jul 2026)

- **Average Rating:** 4.46/5 The average rating of products in this category, based on all submitted ratings
- **Top Trending Product:** INKY Email Security Platform (+0.86%) - Among all products in this category, INKY Email Security Platform recorded the largest rating increase compared to last month

_Last updated: July 26, 2026_

## How Does G2 Rank Email Anti-spam Software Products?

**Why You Can Trust G2's Software Rankings:**

- 30 Analysts and Data Experts
- 5,400+ 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](https://www.g2.com/categories/email-anti-spam/grids.png?focus%5B%5D=30562&focus%5B%5D=112257&focus%5B%5D=115555&focus%5B%5D=118732&focus%5B%5D=25519&focus%5B%5D=15605&focus%5B%5D=129100&focus%5B%5D=127324)

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

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=abnormal-ai&focus%5B%5D=paubox&focus%5B%5D=sanebox&focus%5B%5D=libraesva-email-security&focus%5B%5D=ironscales)

**Sponsored**

### Prisma Browser for Business

Prisma Browser for Business is a secure web browser tailored for small businesses, integrating advanced security features directly into the browsing experience. Built on the Chromium platform, it offers a familiar interface while providing enterprise-grade protection against online threats such as phishing, ransomware, and data breaches. This solution enables teams to work seamlessly across various applications and AI tools, ensuring data security without the need for a dedicated IT team. Key Features and Functionality: - Proactive Threat Protection: Utilizes AI-powered threat scanning to detect and block phishing attempts, malware, and other cyber threats in real-time. - Data Loss Prevention: Implements controls to prevent accidental sharing of sensitive information, such as disabling copy/paste and file uploads to unauthorized platforms. - AI Interaction Management: Monitors and regulates AI tool usage to prevent unintended actions and data leaks, ensuring that business information remains secure. - User-Friendly Deployment: Offers a straightforward setup process with pre-configured security settings, allowing businesses to protect their teams without technical expertise. Primary Value and Problem Solved: Prisma Browser for Business addresses the critical need for robust cybersecurity in small businesses, which are increasingly targeted by sophisticated cyberattacks. By embedding security directly into the browser, it safeguards the primary workspace where employees spend the majority of their time. This solution not only protects against external threats but also mitigates risks associated with accidental data exposure through AI tools and other online platforms. By providing an easy-to-use, comprehensive security solution, Prisma Browser for Business empowers small businesses to focus on growth and productivity without compromising on security.

[Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list&secure%5Bcategory_id%5D=1628&secure%5Bchosen_at%5D=2026-07-28T10%3A20%3A45Z&secure%5Bdisplayable_resource_id%5D=1628&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=page_category&secure%5Bplacement_resource_ids%5D%5B%5D=1628&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=1806417&secure%5Bresource_id%5D=1628&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Femail-anti-spam%3Fpage%3D4&secure%5Btoken%5D=6d9c78971e53b48b6aae926794dd3f99ff38feb6d91c650752d0b0b7d114743c&secure%5Burl%5D=https%3A%2F%2Fwww.paloaltonetworks.com%2Fprisma-browser-for-business%3Futm_source%3Dg2-panw_inhouse-amer-sase-smco-sfow%26utm_medium%3Ddisplay%26utm_campaign%3Dg2-sase-prisma_browser_smb-amer-us-awareness-en-native-cat_com%26utm_content%3D701Ki000000p2UKIAY&secure%5Burl_type%5D=custom_url)

[
Proofpoint Mail Routing Agent
](https://www.g2.com/products/proofpoint-mail-routing-agent/reviews)

By [Proofpoint](https://www.g2.com/sellers/proofpoint)

[

4.6/5(9)

](https://www.g2.com/products/proofpoint-mail-routing-agent/reviews)

Product Description

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

Pros and Cons

[
Email Security (1)
](https://www.g2.com/products/proofpoint-mail-routing-agent/reviews?qs=pros-and-cons)[
Expensive (1)
](https://www.g2.com/products/proofpoint-mail-routing-agent/reviews?qs=pros-and-cons)

[
Worry-Free Advanced
](https://www.g2.com/products/worry-free-advanced/reviews)

By [TrendAI](https://www.g2.com/sellers/trendai)

[

4.5/5(13)

](https://www.g2.com/products/worry-free-advanced/reviews)

What do users say?

Users consistently praise the product for its ease of use and intuitive management, making it a reliable choice for small businesses with limited IT resources. Many appreciate its ability to provide s

[
Hornetsecurity Spam and...
](https://www.g2.com/products/hornetsecurity-spam-and-malware-protection/reviews)

By [Hornetsecurity](https://www.g2.com/sellers/hornetsecurity)

[

4.9/5(11)

](https://www.g2.com/products/hornetsecurity-spam-and-malware-protection/reviews)

What do users say?

Users consistently praise the product for its ease of use and effective email protection, highlighting its user-friendly interface and reliable security features. Many appreciate the quick and knowled

[
Mailinblack
](https://www.g2.com/products/mailinblack/reviews)

By [Mailinblack](https://www.g2.com/sellers/mailinblack)

[

4.7/5(9)

](https://www.g2.com/products/mailinblack/reviews)

Product Description

Expert en cybersécurité depuis 22 ans, Mailinblack protège aujourd'hui plus de 24 000 clients, couvrant les segments TPE, PME, ETI et grands comptes. Notre approche globale sécurise les infrastructure

[
Avast Small Office Protection
](https://www.g2.com/products/avast-small-office-protection/reviews)

By [Gen Digital](https://www.g2.com/sellers/gen-digital)

[

4.5/5(12)

](https://www.g2.com/products/avast-small-office-protection/reviews)

What do users say?

Users consistently praise the product for its effective protection against malware and viruses, highlighting its user-friendly interface that simplifies the experience. Many appreciate the seamless ba

Pros and Cons

[
Malware Protection (2)
](https://www.g2.com/products/avast-small-office-protection/reviews?qs=pros-and-cons)[
Expensive (1)
](https://www.g2.com/products/avast-small-office-protection/reviews?qs=pros-and-cons)

[
AVG Email Server Business...
](https://www.g2.com/products/avg-email-server-business-edition/reviews)

By [Gen Digital](https://www.g2.com/sellers/gen-digital)

[

4.4/5(6)

](https://www.g2.com/products/avg-email-server-business-edition/reviews)

Product Description

AVG Email Server Business Edition is a comprehensive security solution designed to protect Microsoft Exchange servers from a wide range of threats, ensuring uninterrupted and secure email communicatio

[
NoSpamProxy
](https://www.g2.com/products/nospamproxy/reviews)

By [NoSpamProxy](https://www.g2.com/sellers/nospamproxy)

[

5/5(6)

](https://www.g2.com/products/nospamproxy/reviews)

Product Description

NoSpamProxy is a leading email security solution developed by Net at Work GmbH in Germany. Trusted by over 6,000 organizations, it offers a modular platform that includes advanced spam and malware pro

[
Google Cloud Phishing...
](https://www.g2.com/products/google-cloud-phishing-protection/reviews)

By [Google](https://www.g2.com/sellers/google)

[

4.4/5(5)

](https://www.g2.com/products/google-cloud-phishing-protection/reviews)

Product Description

Google Cloud Phishing Protection is a comprehensive security solution designed to safeguard organizations from phishing attacks and malicious content. By leveraging advanced machine learning models an

[
Halon Protect
](https://www.g2.com/products/halon-protect/reviews)

By [Halon](https://www.g2.com/sellers/halon)

[

5/5(5)

](https://www.g2.com/products/halon-protect/reviews)

Product Description

Halon is a global email infrastructure company focusing on empowering service providers to control and maximize email, the world’s most important means of digital communication. Established in 2010, o

Pros and Cons

[
Automation (2)
](https://www.g2.com/products/halon-protect/reviews?qs=pros-and-cons)[
Difficult Learning (2)
](https://www.g2.com/products/halon-protect/reviews?qs=pros-and-cons)

[
SimplyCast
](https://www.g2.com/products/simplycast-360/reviews)

By [simplycast](https://www.g2.com/sellers/simplycast)

[

4.3/5(16)

](https://www.g2.com/products/simplycast-360/reviews)

What do users say?

Users consistently praise the ease of use and exceptional customer service provided by the platform, highlighting its intuitive drag-and-drop interface and responsive support. Many appreciate the abil

Pros and Cons

[
Customizability (1)
](https://www.g2.com/products/simplycast-360/reviews?qs=pros-and-cons)[
Delays (1)
](https://www.g2.com/products/simplycast-360/reviews?qs=pros-and-cons)

[
InterScan Messaging Security
](https://www.g2.com/products/interscan-messaging-security/reviews)

By [TrendAI](https://www.g2.com/sellers/trendai)

[

4.2/5(3)

](https://www.g2.com/products/interscan-messaging-security/reviews)

Product Description

Trend Micro InterScan Messaging Security provides the most comprehensive protection against both traditional and targeted attacks. Using the correlated intelligence from Trend Micro Smart Protection N

Pros and Cons

[
Email Security (1)
](https://www.g2.com/products/interscan-messaging-security/reviews?qs=pros-and-cons)

[
Securence
](https://www.g2.com/products/securence/reviews)

By [Quanos](https://www.g2.com/sellers/quanos)

[

3.8/5(3)

](https://www.g2.com/products/securence/reviews)

Product Description

Securence is a managed spam service offering anti-spam and anti-virus filtering technologies.

[
SilverSky Email Protection...
](https://www.g2.com/products/silversky-email-protection-suite/reviews)

By [SilverSky](https://www.g2.com/sellers/silversky-84fca1c3-88bd-4e77-8263-318ff146e366)

[

4.7/5(3)

](https://www.g2.com/products/silversky-email-protection-suite/reviews)

Product Description

SilverSky Email Protection Suite provides advanced email protection to keep your company safe from the growing threat of email-based cybersecurity attacks. In addition to robust anti-virus and anti-s

[
ALTOSPAM
](https://www.g2.com/products/altospam/reviews)

By [ALTOSPAM](https://www.g2.com/sellers/altospam)

[

5/5(2)

](https://www.g2.com/products/altospam/reviews)

Product Description

Altospam is a leading email filtering solution, defending businesses against spam, viruses, and phishing attacks with over 99.9% efficiency. Hosted in France, it ensures data security in compliance wi

[
Clearedin
](https://www.g2.com/products/clearedin/reviews)

By [Clearedin](https://www.g2.com/sellers/clearedin)

[

4.8/5(2)

](https://www.g2.com/products/clearedin/reviews)

Product Description

Complete B2B cloud security, compliance and phishing prevention across all popular B2B chat, email, collaboration and file sharing software. This SaaS offering solves the growing and costly enterprise

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- [Next ›Next ›](/categories/email-anti-spam?order=g2_score&page=5#product-list)

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Similar Categories

- [Secure Email Gateway](/categories/secure-email-gateway)
- [Cloud Email Security](/categories/cloud-email-security)

- [Email Encryption](/categories/email-encryption)
- [Intelligent Email Protection](/categories/intelligent-email-protection)

[Browse Email Anti-spam Themes](/categories/email-anti-spam/themes)

 ![Lauren Worth](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Lauren Worth")
LW

Researched and written by [Lauren Worth](https://research.g2.com/insights/author/lauren-worth)

Updated October 3, 2024

Email anti-spam technology is used to prevent malicious content from being delivered via email. These tools scan email messages, content, and attachments for potential threats and then filter or block suspicious messages from being delivered. Administrators can whitelist approved content or senders while also blacklisting or blocking communications from suspicious parties.

Companies use email anti-spam tools to prevent their employees from being misled through phishing attacks or compromising local networks when downloading malware. They also prevent employees from delivering information to misidentified users, saving the business from potential breaches.

All [secure email gateway software](https://www.g2.com/categories/secure-email-gateway) possesses anti-spam or email filtering capabilities, but those tools also have additional features for comprehensive spam filtering, email encryption, and information archiving.

To qualify for inclusion in the Email Anti-Spam category, a product must:

- Filter email content for malware or viruses
- Identify mislabeled senders or potential phishing attempts
- Provide blacklisting or blocking capabilities to restrict communication with suspicious parties

Show More