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Top Rated Anti-spam Software with Encryption

Last updated: June 2026

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27 software options

ContentCatcher logo

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

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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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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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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Avanan logo

Email Security — Reinvented

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Avanan catches the advanced attacks that evade default and advanced security tools. Its invisible, multi-layer security enables full-suite protection for cloud collaboration solutions such as Office 365, G-Suite, and Slack. The platform deploys in one click via API.

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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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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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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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ESET PROTECT MDR logo

Future ready protection for enterprise

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Airtight protection of your IT environment,
with complete cyber risk management and
world-class ESET expertise on call.

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ESET Endpoint Security logo

Network security, network monitoring & endpoint protection

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ESET Endpoint Security is a network monitoring solution, which helps businesses manage processes for detecting threats, blocking targeted attacks, preventing data breaches & providing protection against ransomware. It lets users monitor behavior of malicious processes and decloak memory segments.

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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.

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MailCleaner logo

Cloud & on-premise anti spam software for businesses

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MailCleaner offer cloud or on-premise anti spam and anti virus protection for ISP SME SMI & large companies, non profit organizations and governments

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modusCloud logo

Cloud email security, encryption, and archiving

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modusCloud is a cloud email security solution with tools for spam detection, threat monitoring, email archiving, phishing detection, and more. The cloud-based platform offers features including filtering, continuity, encryption, and archiving in order to provide businesses with email protection.

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Cisco Secure Email logo

Cloud-based email security tool for preventing cyberattacks

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Cisco Secure Email is a cloud-based email security software designed to help businesses of all sizes provide protection against malicious files, malware, ransomware, phishing attacks, spoofing, and other cyber threats. It enables organizations to streamline data loss prevention (DLP) and encryption processes to safeguard critical business information.

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SilverSky Email Protection Suite logo

Advanced email security and compliance for SMBs

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Reduces risk exposure and corporate liability by safeguarding your email with anti-virus and anti-spam technologies that block malicious software and spam at the gateway. SilverSky protects small and mid-sized businesses to prevent targeted attacks, social engineering attacks and data exfiltration.

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Mail Assure logo

Email, Secured.

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Cloud-based email security designed to help your customers stay in control while safeguarding their inbound and outbound email.

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Inky logo

The most effective solution when fighting phishing attacks.

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INKY is an endpoint protection tool that helps businesses leverage artificial intelligence (AI) technology and machine learning capabilities to identify and prevent phishing attacks. INKY can be integrated with Microsoft Exchange, Google Workspace and other applications.

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SpamTitan logo

Anti-spam filter for business email. Vital email security.

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SpamTitan blocks spam, viruses, malware, ransomware, phishing attempts and other email threats. SpamTitan provides advanced yet easy to use email security for your business. Office 365 friendly

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Symantec Email Security.cloud logo

Anti-spam and email security software

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Symantec Email Security.cloud is an anti-spam software designed to help businesses filter unwanted messages and protect the system from email-borne viruses. The platform offers data loss prevention functionality, which enables managers to encrypt and control sensitive data.

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SPAMfighter Exchange Module logo

Anti-spam and network security solution

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SPAMfighter Exchange Module is an anti-spam solution designed to help businesses identify and prevent spam messages, email fraud, and phishing attacks. The centralized dashboard allows users to deploy updates, blacklist suspicious emails, generate custom reports, and handle data encryption processes.

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Graphus logo

Cloud-based email security software

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Graphus is a cloud-based anti-phishing software, which helps protect organizations against email attacks, credential theft, malware, ransomware, identity spoofing, brand impersonation, business email compromise (BEC), account takeover (ATO) and other threats.

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Trend Micro Smart Protection Complete Suite logo

Security and threat management solution

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Trend Micro Smart Protection Complete Suite, powered by Trend Micro's groundbreaking Enterprise Security Suite (ESS) and fortified with Managed XDR is a cutting-edge managed detection and response solution.

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EuropeanMX logo
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Cloud-based anti-spam for incoming and outgoing messages

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Use the cloud redundancy solution EuropeanMX as a reliable spam filter. Our system offers nearly 100% filter accuracy and virtually no false positives. Protect your IP ranges before getting blacklisted. Continuously archive your emails with EuropeanMX to always have a backup of your emails.

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MailGuard logo
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Speed Matters. MailGuard stops threats 2- 48hrs faster.

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MailGuard anticipates, predicts and learns from emerging zero-day threats like ransomware, phishing, spear-phishing, Business Email Compromise and similar malicious email-borne attacks, protecting email users from harm.

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spambarrier logo
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First-class spam and virus protection for your domain.

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Spambarrier is a service that filters your emails before they reach your mail server. The easy way to protect yourself from spam Hosting securely in Germany and compliant with data protection regulations.

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