Best Email Anti-spam Software - Page 7

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

Total Products under this Category: 120

Category Stats (Aug 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 (+1.43%) - Among all products in this category, INKY Email Security Platform recorded the largest rating increase compared to last month

Last updated: August 05, 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
  • 120+ 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, Paubox, Abnormal AI, 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=paubox&focus%5B%5D=abnormal-ai&focus%5B%5D=libracyber-email-security)

Sponsored

Axway Managed File Transfer (MFT)

Axway Managed File Transfer (MFT) is a comprehensive solution designed to help organizations effectively manage and control the secure transmission of data. With a strong emphasis on data protection and compliance with regulatory standards, Axway MFT has positioned itself as a leader in the managed file transfer technology space for over two decades. This solution enables businesses to streamline their data transfer processes while safeguarding sensitive information, making it an essential tool for modern enterprises. The Axway MFT solution is particularly advantageous for organizations that require a reliable and scalable method for transferring large volumes of data across various platforms and locations. Its target audience encompasses businesses of all sizes, with a notable focus on industries such as finance, healthcare, and logistics, where data security and compliance are critical. Use cases for Axway MFT include secure file sharing between partners and clients, automated data transfers between internal applications, and the management of sensitive information exchanges—all while ensuring the integrity and confidentiality of the data being transmitted. Key features of Axway MFT include SecureTransport, Transfer CFT, Workbench, and Managed Cloud Services. SecureTransport serves as a robust MFT gateway capable of handling high-volume file transfers with high fault tolerance and availability, ensuring that critical data flows remain uninterrupted. This feature is vital for organizations that cannot afford downtime in their data transfer operations. Transfer CFT simplifies cross-file transfers, allowing for seamless integration across diverse platforms and operating systems, which is essential for businesses operating in a multi-vendor environment. Workbench provides a consolidated view of the health, queue lengths, and service status of the network, enabling organizations to proactively address potential issues before they escalate. The Managed Cloud Services offered by Axway combine the benefits of a cloud-based platform with the expertise of Axway’s technical team. This service not only reduces operational costs but also provides a highly secure environment for data transfers. By leveraging these cloud services, organizations can allocate their IT resources more effectively, allowing them to focus on growth and innovation rather than maintenance tasks. Axway MFT stands out as a robust solution that addresses the complex needs of secure data transmission in today's digital landscape. Its combination of advanced features, scalability, and strong compliance capabilities makes it an invaluable asset for organizations looking to enhance their data transfer processes while ensuring the utmost security and reliability.

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Diadem Advanced Email Anti Spam

Diadem's Advanced Email Anti-Spam solution is a comprehensive, cloud-based service designed to protect organizations from a wide range of email threats, including spam, viruses, phishing attempts, and malware. By integrating seamlessly with existing email infrastructures, it ensures that inbound and outbound communications remain secure, maintaining both network integrity and company reputation. The solution offers high filtering accuracy with minimal false positives, enhancing overall email reliability. Key Features and Functionality: - Inbound and Outbound Filtering: Effectively filters incoming and outgoing emails to prevent spam, viruses, and malicious attachments from entering or leaving the network. - Advanced Antivirus and Anti-Malware Protection: Utilizes cutting-edge scanning technologies to detect and neutralize threats before they reach the inbox. - High Filtering Accuracy: Employs proprietary IP-reputation systems and multiple content classifiers to achieve nearly 100% filtering accuracy with a very low false-positive rate. - Email Continuity: Ensures uninterrupted email access by queuing messages during server downtimes and automatically delivering them once the server is back online. - Comprehensive Reporting and Management: Provides detailed logs, web-based and IMAP-based quarantine access, and advanced filtering statistics for efficient monitoring and management. - Seamless Integration: Compatible with various mail servers, including Exchange, Zimbra, Postfix, Exim, qmail, and Lotus, and integrates with leading control panels. Primary Value and Problem Solved: Diadem's Advanced Email Anti-Spam solution addresses the critical need for robust email security in organizations. By effectively filtering out spam and malicious content, it safeguards networks from potential threats, reduces the risk of IP blacklisting, and maintains the organization's reputation. The solution also enhances employee productivity by minimizing the time spent dealing with unwanted emails and reduces infrastructure load by decreasing the volume of spam processed by internal servers. Additionally, its fully managed service simplifies email security management, allowing IT resources to focus on other strategic initiatives.

Who Is the Company Behind Diadem Advanced Email Anti Spam?

Elpha Secure

Elpha Secure offers an integrated cyber protection solution tailored for small and midsize businesses, combining advanced cybersecurity software with comprehensive cyber insurance coverage. This dual approach not only safeguards businesses against cyber threats but also ensures financial resilience in the event of an attack. By embedding proprietary security technology within each policy, Elpha Secure simplifies the process of obtaining and maintaining robust cyber defense, making it accessible and affordable for businesses that may lack extensive IT resources. Key Features and Functionality: - Comprehensive Cyber Insurance: Coverage includes protection against ransomware, data restoration, business interruption, cybercrime, hardware replacement, and network security and privacy liabilities. - Advanced Cybersecurity Software: Features encompass real-time threat monitoring, automated data backups, secure remote access with multi-factor authentication, and endpoint detection and response. - User-Friendly Platform: The solution offers a streamlined interface for managing security alerts, software updates, and policy details, ensuring ease of use for businesses without dedicated IT teams. - Rapid Deployment: Businesses can receive quotes in minutes through an AI-powered underwriting process and implement the security software swiftly with single-click installation. - 24/7 Expert Support: Access to a dedicated Security Operations Center ensures continuous monitoring and prompt assistance during incidents. Primary Value and Problem Solved: Elpha Secure addresses the critical need for small and midsize businesses to protect themselves against the increasing prevalence of cyberattacks. By integrating cybersecurity measures directly into the insurance policy, it reduces the complexity and cost associated with managing separate security solutions and insurance coverage. This holistic approach not only enhances a business's security posture but also ensures financial protection, thereby reducing the likelihood of operational disruptions and financial losses due to cyber incidents. Ultimately, Elpha Secure empowers businesses to operate confidently in the digital landscape, knowing they are comprehensively protected against evolving cyber threats.

Who Is the Company Behind Elpha Secure?

Email Hygiene and Validation

Impressionwise offers a professional data hygiene and email validation service featuring a multi-layered approach to identify, validate and protect against a wide range of e-mail-based threats.

Who Is the Company Behind Email Hygiene and Validation?

  • Seller: Impressionwise
  • Year Founded: 2008
  • HQ Location: Clearwater, US
  • Twitter: @Impressionwise_
    143 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    4 employees on LinkedIn®

EntrustedMail Email Threat Protection

EntrustedMail's Email Threat Protection is a comprehensive solution designed to safeguard organizations from a wide array of email-borne threats, including phishing, spam, malware, viruses, ransomware, and zero-day attacks. By leveraging advanced artificial intelligence and predictive technologies, it ensures a secure and efficient email environment, allowing businesses to operate without the constant concern of cyber threats. Key Features and Functionality: - Spam Detection: Achieves a 99.99% spam catch rate with a minimal 0.003% false positive rate, effectively filtering out unwanted emails. - Zero-Day Attack Protection: Utilizes advanced AI to detect and mitigate new, previously unknown threats in real-time. - Phishing Protection: Employs real-time scanning to prevent whaling and spear-phishing attacks, safeguarding against targeted email fraud. - Attachment Sandboxing: Analyzes suspicious email attachments in a secure environment to detect and block advanced threats. - Malware Link Blocking: Inspects all email-contained links against known malware and ransomware sources to prevent malicious content access. - Email Quarantine: Allows administrators to review, release, or delete quarantined messages, with optional daily reports for end-users. - Virus Detection: Identifies and blocks viruses before they infiltrate the email system, preventing potential outbreaks. - Attachment Filtering: Enforces email attachment policies by blocking or quarantining dangerous files that violate organizational guidelines. - Recipient Verification: Confirms the existence of recipient accounts before delivering emails, reducing the risk of data leaks through misdirected messages. Primary Value and User Solutions: EntrustedMail's Email Threat Protection transforms email systems into secure and efficient communication tools by proactively defending against a spectrum of email threats. This solution not only enhances security but also boosts productivity by minimizing disruptions caused by malicious emails. Organizations benefit from reduced risk of data breaches, compliance with regulatory standards, and the assurance that their email communications are protected against evolving cyber threats.

Who Is the Company Behind EntrustedMail Email Threat Protection?

Everest

Everest is a fully integrated email success platform providing crucial insights and deliverability guidance so you can reach more people, increase engagement, and improve efficiencies of your email program. Improve your email deliverability by getting complete visibility into your email marketing metrics and sender reputation, understand your audience and deliver content that is timely, personalized, and functions flawlessly on any device, and get a holistic view of your email program with the insights, guidance, and exclusive data you need at your fingertips – all in a single platform. Everest is built by the combined forces of Return Path, BriteVerify, and 250ok. Bringing together 20+ years of email marketing experience and continuous learning from thousands of customers into this unified and powerful platform.

Who Is the Company Behind Everest?

  • Seller: Validity Inc
  • Company Website:
  • Year Founded: 2018
  • HQ Location: Boston, Massachusetts
  • Twitter: @TrustValidity
    1,151 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    350 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Marketing and Advertising, Financial Services
  • Company Size: 25% Small, 17% Large

What Do G2 Reviewers Say About Everest?

AI-generated summary from verified user reviews

Pros
  • Users praise the ease of use of Everest, appreciating its flexibility and intuitive design for managing workflows.
  • Users value the effective email deliverability of Everest, ensuring campaigns reach inboxes without getting lost as spam.
  • Users commend the detailed yet intuitive dashboards of Everest, enhancing their email campaign management experience.
  • Users appreciate the high rate of email deliverability with Everest, ensuring successful inbox placements for campaigns.
  • Users appreciate the flexible design of Everest, effortlessly organizing tasks and customizing workflows with ease.
Cons
  • Users find the price steep and desire more meaningful updates to justify the cost of Everest.
  • Users find the transition from other platforms complicated due to Everest's extensive features and setup requirements.
  • Users find the setup and transition process complicated due to the abundance of features offered by Everest.
  • Users find the setup process complicated, especially when transitioning from other platforms due to the extensive features.
  • Users experience dashboard navigation challenges, leading to difficulties in finding the desired data efficiently.

FactorX: AI Powered Email Security for Modern Threats

FactorX.ai is an AI-powered email security platform that protects enterprises from phishing, BEC, and malware using real-time threat detection, behavioral analysis, and automated incident response to stop advanced threats before damage is done.

Who Is the Company Behind FactorX: AI Powered Email Security for Modern Threats?

  • Seller: FactorX
  • Year Founded: 2024
  • HQ Location: Newark, US
  • LinkedIn® Page: www.linkedin.com
    1 employees on LinkedIn®

formpuppy

formpuppy is an AI-powered spam filter for contact forms. It uses Claude Haiku to intelligently detect spam and sales emails, so only genuine inquiries reach your inbox.

Who Is the Company Behind formpuppy?

inumbo

inumbo is a cloud-based anti-spam service that works with any e-mail infrastructure.

Who Is the Company Behind inumbo?

Janusmail

Every day Mailboxes and servers are subjects to phishing, spam, ransomware, viruses and malware attacks. JANUSMAIL is a new concept product, the result of 20 years of experience in the electronic mail management, created for: - Protect emails and servers from attacks and spam - Identify and resolve forwarding/receiving problems - Manage massive amunts of emails without slowdowns - Integrate seamlessly with Zimbra servers - In-depth analysis of incoming and outgoing emails - Include specific features for service providers

Who Is the Company Behind Janusmail?

Lexis Nexis Email Risk Assessment

LexisNexis Email Risk Assessment Confirms Emails with Confidence.

Who Is the Company Behind Lexis Nexis Email Risk Assessment?

  • Seller: LexisNexis
  • Year Founded: 1970
  • HQ Location: New York
  • Twitter: @NexisSolutions
    1,258 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    9,695 employees on LinkedIn®

Mailhardener

Mailhardener helps you to secure your domain against being used for email fraud and spam.

Who Is the Company Behind Mailhardener?

Maldun Email Security Solution

Maldun Email Security Gateway (ESG) is a multi-featured mail gateway deployed in front of the mail server(s) to provide inbound email security, and after the mail servers before Internet for the outbound email security as well as other functions. Maldun ESG is powered by the next generation email security infrastructure and has the capability to filter out all sorts of email threats like spam, virus, phishing/scam, marketing/graymail. and other unwanted email messages. With the additional Maldun Advanced Threat Protection (ATP) integration, Maldun ESG is able to detect and block unknown and advanced threats. Tier One: Connection Control and authentication Block email threats at the connection phase to prevent threats and increase efficiency: • Denial of Service (DoS) Protection • SMTP Rate Limit • Sender IP Reputation Analysis • SMTP Transaction Check • Sender authentication (SPF, DKIM, DMARC) • Mail server authentication (TLS) Tier Two: Adaptive Sender Reputation Filtering More than an IP blacklist: 
 • Sender Reputation System based on multiple factors: Sender domain, Connecting IP, From address, To address, Sender/Recipient relations • Intelligent and adaptive, it learns user behaviors and adjusts automatically • Optimized algorithm guarantees flexibility, accuracy, and efficiency Tier Three: Anti-Virus Filtering A combination of ClamAV and/or other anti-virus engines and Maldun attachment pre-detector: 
 • Anti-Virus engine offers an extensive real time scanning and virus definition updates. Catch a variety of known virus and phishing patterns, spyware, Trojans, worms and malware threats. • Maldun attachment pre-detector analyze abnormal attachment traffic and attachment file type to predict and block potential attachment threats 
 Tier Four: Anti-Spam Protection Anti-spam methods eliminate more than 99% of spam with a range of deep anti-spam technologies including: • Maldun heuristic Spam content rules • Maldun Spam machine learning signatures • Global Spam fingerprints database • Sender Domain/IP blacklists • URL blacklists • Other Spam signatures 
 Tier Five: Graymail Detection Flexible Graymail (Marketing/Advertisement) analysis with independent On/Off/Mark switch: 
 • Newsletter • Campaigns • Social network • Advertisements 
 Tier Six: Advanced Threat Protection To protect against the unknown, new advanced malware, Maldun ESG submits email attachment files and URLs to the Advanced Threat Protection appliance. Maldun APT will scan and block as follow: • File/URL(domain, IP) reputation query Global File/URL black/whitelist database for quick comparison and detection. • Dynamic Sandbox Scanning Suspicious email attachments will be sent as encrypted packages to the powerful APT appliance to run dynamic sandbox scanning. • Optional Threat Analysis Cloud Analysis Maldun ESG supports API submission of Email attachments and URLs to the Maldun Threat Analysis Cloud. • Threat Scores and Malware family Threat Level Analysis that commands Maldun ESG to either block or release certain mails. • Professional Analysis Report Analysis report includes malicious file meta data, static analysis, behavior analysis, network activities and registry summary, etc Tier Seven: Anomaly Detection Maldun Anomaly Detection module detects anomalies and abnormal behaviors of Email Sender and Email Recipients. With pre-defined anomaly rules, the admin will always be warned about the email aromalies that require attention. Together with the Sender Reputation and customized VIP mailbox rules, Maldun Anomaly Detection effectively detects BEC and other email frauds. Tier Eight: Content Filters The Content Filters allows organizations to compile customized content signatures to detect text patterns or image patterns in the email body and/or attachments, and set up email processing strategies against the content violations. The Content Filters module can effectively work as sensitive content detection, content violation detection, and data leak protection for companies and organization to comply with regulations and policies.

Who Is the Company Behind Maldun Email Security Solution?

MIMEDefang

MIMEDefang is an e-mail filtering tool that works with the Sendmail "Milter" library. MIMEDefang lets you express your filtering policies in Perl rather than C, making it quick and easy to filter or manipulate your mail. MIMEDefang is mature software: The first version was released in 2000. It's also in use in thousands of installations. It remains under active development. MIMEDefang is free software: It's released under the terms of the GNU General Public License. It runs under Linux, FreeBSD, Solaris and most other UNIX or UNIX-like systems.

Who Is the Company Behind MIMEDefang?

N-able Spam Experts

N-able SpamExperts helps web-hosting companies and ISPs/telcos strengthen email protection. Services include affordable inbound and outbound email filtering and archiving solutions—driven by a continuously updated Intelligent Protection & Filtering Engine to meet emerging threats.

Who Is the Company Behind N-able Spam Experts?

  • Seller: N-able
  • HQ Location: Morrisville, North Carolina
  • Twitter: @Nable
    15,859 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    2,287 employees on LinkedIn®
  • Ownership: NYSE: NABL

OOPSpam

OOPSpam API stops bots and manual spam from reaching your customers with high accuracy and privacy.

Who Is the Company Behind OOPSpam?

  • Seller: Oopspam
  • Year Founded: 2019
  • HQ Location: Minneapolis, US
  • LinkedIn® Page: www.linkedin.com
    2 employees on LinkedIn®
Lauren Worth
LW
Researched and written by Lauren Worth
Updated October 3, 2024