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Top Rated Email Security Software with Spam blocker

Last updated: May 2026

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62 software options

Libraesva Email Security logo

Libraesva Email Security

Exceptional Email Security

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Libraesva 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 Libraesva’s unique Adaptive Trust Engine.

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Fortra’s DMARC Protection logo

Fortra’s DMARC Protection

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Software for protection from spoofing and phishing attacks

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Agari Brand Protection is a simple anti-phishing solution that helps enterprises prevent and recover from email spoofing attacks. Businesses can block phishing attacks with DMARC, SPF, DKIM, and other email authentication services.

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ContentCatcher logo

ContentCatcher

Cloud-based email security, phishing protection & anti-spam

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ContentCatcher is a web-based SaaS solution offering email security, encryption, anti-spam, phishing protection and compliant archiving to assist organizations of all levels to combat and mitigate malicious email threats, with features including anti-virus, filtering, URL defense, reporting and more

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Heimdal Email Security logo

Heimdal Email Security

Email Protection in a Redefined Spam Filter

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Heimdal Email Security is an email protection solution that combines advanced spam filtering with robust malware prevention through a multitude of modern technologies.

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Topsec Cloud Solutions logo

Your Managed Email Security Specialists

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Topsec Email Security is a complete email filtering solution that helps organizations to check all their incoming and outgoing email content for virus and spam.

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Selzy logo

Affordable email marketing software

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Selzy is an intuitive email marketing platform that suits any business needs. It offers a wide range of integrations with your favorite tools, an easy-to-use drag&drop editor, and email templates for any occasion.

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Zerospam logo

Cloud email security & anti-spam solution

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ZEROSPAM is a complete cloud email security and anti-spam solution that protects domains against spam, ransomware, spear phishing, viruses, phishing and all harmful emails. Detect disguised executable files & infected macros sent as attachments via emails or downloaded through a malicious link.

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Paubox Email Suite logo

HIPAA-compliant email encryption software

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Paubox Email Suite is a HIPAA-compliant email encryption software designed to help businesses manage and secure emails using encryption and data loss prevention methods. It includes ExecProtect, which allows businesses to prevent data breaches, phishing, and display name spoofing attacks by automatically detecting and blocking impersonation scams and informing administrators via emails.

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ALTOSPAM logo

Effectively protect all your company's emails

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ALTOSPAM is an email protection solution for all businesses, associations and local authorities. Choose advanced email security compatible with all mail servers, including Office 365. Try ALTOSPAM for free.

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Trustifi logo

Protect Your Business Emails with AI-Powered Security

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Email security solution that helps manage threat detection, regulatory compliance, data encryption, whitelisting/blacklisting, and more.

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MXGuardian logo

The Experts in Email Security

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Cloud-based email spam and malware filtering service that protects your business from phishing attacks, viruses, spam, ransomware and other email threats.

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INLYSE Malware.AI logo

VISUAL AI BASED MALWARE DETECTION

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INLYSE Malware.AI is a revolutionary visual AI-based malware detection solution that utilizes cutting-edge technology to convert files into graphical representations and analyze them comprehensively for any signs of malware.

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Security Gateway by MDaemon logo

Powerful yet flexible email security software.

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Security Gateway by MDaemon is an email security software designed to help businesses secure email servers from malware and phishing attacks. The solution enables administrators to automatically detect threats across various platforms including Microsoft Exchange Server and Office 365.

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InboxGuard logo

Email phishing protection and fraud detection solution

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InboxGuard (formerly Retruster) is a cloud-based phishing protection solution designed to help small to large organizations identify fake and malicious codes in incoming emails. Key features include data security, ransomware protection, identity theft prevention, background screening, and threat tracking.

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RMail logo

RMail®, track, prove, encrypt, e-sign, certify, all-in-one.

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RMail® is the e-security platform by RPost®. RMail specializes in elegantly easy to use email encryption for privacy and compliance, e-signatures, legal e-delivery proof, secure file sharing, email impostor protection, and AI-infused services to prevent data leaks and human e-security errors.

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DMARC Manager logo

Protect your Email Domains against Email Abuse and Phishing.

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DMARC Advisor specializes in empowering email security professionals. Implementing DMARC is an essential measure that fortifies defenses against evolving email threats. With DMARC, you gain the ability to authenticate email senders, prevent phishing attacks and more.

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ESET Cloud Office Security logo

Security platform for Microsoft 365 applications

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ESET Cloud Office Security provides advanced protection for Microsoft 365 applications against malware, spam or phishing attacks with ultimate zero-day threat defense and an easy-to-use console.

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Zulu eDM logo

Campaign management and marketing automation software

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Zulu eDM is a multi-channel campaign management software designed to help franchises schedule, track, and manage email and SMS marketing operations. It allows multi-business firms to create brand-specific templates, operate several team accounts, add location-specific content for engaging local subscribers, and more.

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Guardz logo

Cybersecurity solution

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Guardz is a managed cybersecurity solution built for MSPs to holistically protect and provide insurance coverage to SMEs with a holistic and multilayered approach.

The Guardz platform continuously monitors businesses' digital landscapes to safeguard their assets.

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servermx logo

Email Hosting Solution

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Servermx is a secure email hosting service that provides encryption for confidential emails, optional Dropbox integration for easy file sharing and two-factor authentication for an extra layer of security.

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IRONSCALES logo

We catch the phish that others miss!

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We ensure your inboxes are uncompromised and your team is unburdened.

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Abnormal AI logo

A Fundamentally Different Approach to Email Security

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Abnormal provides total protection against the widest range of attacks including phishing, malware, ransomware, social engineering, executive impersonation, supply chain compromise, internal account compromise, spam, and graymail.

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Sophos Email logo

Software for managing email encryption and secure networks

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Sophos Email is a cloud-based software designed to help businesses establish secure email networks and ensure protection from malware, intrusion, unauthorized access, and other online threats. The application includes anti-ransomware technology, which enables organizations to stop boot-record and ransomware attacks using behavioral analysis.

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PowerDMARC logo

Email security and anti-spam software

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PowerDMARC is a cloud-based email security software designed to help businesses secure emails from spam, spoofing, phishing, and other online threats. The platform utilizes artificial intelligence (AI) technology to automatically convert XML data into charts, numbers, and graphs, enabling users to view and evaluate related metrics.

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Sentry Email Defense Service logo

Cloud-based email protection platform

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Sentry Email Defense Service (EDS) is a cloud-based platform that helps businesses ensure protection against spam, virus, phishing links, DDoS, ransomware, and various other threats. Features include real-time reporting, encryption, data leakage protection, SMTP logs, and email archiving.

Read more about Sentry Email Defense Service

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