Best Online Email Security Software

In an always-connected world, many businesses prefer email security software solutions that require no local installation. Below, you’ll find top online email security software platforms—often referred to as cloud-based or web-based—offering easy subscription models, automatic updates, and seamless remote access. Explore these recommended tools to streamline workflows, enhance collaboration, and keep your team productive from anywhere.

Last Updated: September 18, 2025

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List of Top Web-Based Email Security Software

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dmarcian is an essential email security software designed to help organizations implement and manage DMARC (Domain-based Message Authentication, Reporting, and Conformance) protocols. By providing visibility into email authentication issues, dmarcian enables businesses to protect their domains from phishing and spoofing attacks. The platform simplifies the DMARC implementation process by guiding u... Read more about dmarcian

Free Trial

Available

Pricing Type

$19.99 Per month

Location

United States

SilverSky Email Protection Suite is an advanced email security and collaboration software designed to protect organizations from email threats such as phishing, spam, and malware. By offering a suite of robust tools, it ensures that businesses’ email systems remain secure while enhancing productivity. SilverSky’s features include real-time threat detection, email encryption, and anti-virus pro... Read more about SilverSky Email Protection Suite

Free Trial

NA

Pricing Type

Contact Vendor

Location

United States

Retarus is a robust SMS marketing software that enables businesses to communicate effectively with their customers through targeted text messaging campaigns. This platform provides tools for creating, scheduling, and managing SMS campaigns, allowing organizations to reach their audience in a timely manner. With its user-friendly interface, marketers can easily craft personalized messages, segment ... Read more about Retarus

Free Trial

Available

Pricing Type

Contact Vendor

Location

Germany

SpamTitan Plus is a robust cybersecurity software solution designed to protect businesses from email-based threats, including spam, phishing, malware, and ransomware. It uses advanced filtering technology to block harmful emails before they reach your inbox, significantly reducing the risk of cyber-attacks and data breaches. SpamTitan Plus leverages artificial intelligence and machine learning to ... Read more about SpamTitan Plus

Free Trial

NA

Pricing Type

Contact Vendor

Location

Ireland

PhishTitan is an advanced email security software that provides businesses with robust protection against phishing and other email-based threats. The platform uses artificial intelligence and machine learning algorithms to detect and block malicious emails, such as phishing attempts, malware, and ransomware. PhishTitan analyzes email content, sender behavior, and other contextual clues to identify... Read more about PhishTitan

Free Trial

NA

Pricing Type

Contact Vendor

Location

Ireland

Armorblox is a robust email security software designed to protect organizations from advanced email threats, including phishing attacks, malware, and business email compromise. This platform utilizes artificial intelligence and natural language processing to analyze incoming emails and identify potential threats in real time. With Armorblox, users can easily monitor email traffic, block suspicious... Read more about Armorblox

Free Trial

NA

Pricing Type

$1 Per year

Location

United States

IRONSCALES is a robust email security software solution designed to protect organizations from phishing attacks, malware, and other email-based threats. The platform uses advanced machine learning algorithms to detect and block malicious emails in real-time, providing an added layer of protection for both inbound and outbound email traffic. IRONSCALES offers automated incident response capabilitie... Read more about IRONSCALES

Free Trial

Available

Pricing Type

$6 Per feautre

Location

Israel

SecureMyEmail is an email security software designed to protect email communications through end-to-end encryption and advanced security protocols. This platform helps businesses and individuals secure their emails from unauthorized access, phishing attacks, and data breaches. SecureMyEmail provides tools for encrypting email content and attachments, ensuring that sensitive information remains pri... Read more about SecureMyEmail

Free Trial

Available

Pricing Type

$3.99 Per user

Location

United States

ePrism Email Security is a robust email management software designed to protect organizations from email threats and enhance communication efficiency. This platform provides tools for filtering spam, blocking phishing attempts, and safeguarding sensitive data, ensuring that email communications are secure and reliable. ePrism features an intuitive interface that allows administrators to customize ... Read more about ePrism Email Security

Free Trial

Available

Pricing Type

$5 Per year

Location

United States

Paubox Email Suite is a specialized email marketing software focused on providing secure, HIPAA-compliant email communication for healthcare organizations. It allows users to send encrypted emails directly to recipients’ inboxes without requiring additional login steps, making it easy for patients and clients to access information. Paubox ensures data privacy with advanced encryption and protect... Read more about Paubox Email Suite

Free Trial

Available

Pricing Type

$29 Per feautre

Location

United States

ALTOSPAM is a robust Anti-Spam Software designed to protect businesses and individuals from unwanted and malicious email communications effectively. It offers a comprehensive platform for filtering, blocking, and managing spam emails, ensuring that inboxes remain secure and clutter-free. ALTOSPAM features advanced spam detection algorithms that analyze incoming emails for suspicious content, known... Read more about ALTOSPAM

Free Trial

Available

Pricing Type

$9 Per user

Location

France

RMail is a state-of-the-art Email Security Software designed to protect businesses from email-based threats and ensure secure communication. The platform offers a comprehensive suite of tools for email encryption, secure delivery, and compliance management, safeguarding sensitive information and maintaining regulatory standards. Features include end-to-end encryption, secure email archiving, and t... Read more about RMail

Free Trial

Available

Pricing Type

$7 Per user

Location

United States

StartMail is an advanced email security software that prioritizes privacy, encryption, and protection from digital threats. With StartMail, users can send and receive encrypted emails to safeguard sensitive communication. It offers a range of security features, including two-factor authentication, secure storage, and the ability to send self-destructive emails that automatically delete after being... Read more about StartMail

Free Trial

Available

Pricing Type

$59.95 Per user

Location

Netherlands

The Smartest Email App On The Planet

Canary Mail is an email client known for its emphasis on security and privacy, along with a user-friendly interface. It offers end-to-end encryption, ensuring that emails are secure and private, a crucial feature for users handling sensitive information. The software supports multiple email providers and accounts, allowing users to manage all their emails in one place. Canary Mail's unique natural... Read more about Canary Mail

Free Trial

NA

Pricing Type

$49 Per year

Location

United States

Xeams is an advanced cybersecurity software designed to protect organizations from email-based threats and enhance overall security posture. This platform provides comprehensive tools for spam filtering, phishing protection, and email archiving, ensuring that sensitive information is safeguarded against unauthorized access. With Xeams, users can implement robust security measures to block maliciou... Read more about Xeams

Free Trial

Available

Pricing Type

$0 Per user

Location

United States

EasyDMARC is a leading email security software designed to protect organizations from email-based threats such as phishing, spoofing, and domain abuse. This platform offers a comprehensive suite of tools that help businesses implement and manage Domain-based Message Authentication, Reporting, and Conformance (DMARC) protocols effectively. Users can monitor their email domains, assess security conf... Read more about EasyDMARC

Free Trial

Available

Pricing Type

$17.99 Per feautre

Location

United States

CipherBox is a cutting-edge cybersecurity solution that provides comprehensive protection for businesses against evolving digital threats. It employs advanced encryption technologies to secure sensitive data both in transit and at rest. CipherBox offers real-time threat detection and response capabilities, utilizing artificial intelligence and machine learning to identify and mitigate malware, ran... Read more about CipherBox

Free Trial

Available

Pricing Type

Contact Vendor

Location

United States

HENNGE One is a robust file sharing software designed to help organizations manage and secure their data across various platforms. This platform provides comprehensive tools for storing, sharing, and collaborating on files, ensuring that users can access their data securely from anywhere. With features such as end-to-end encryption, access control, and file versioning, HENNGE One empowers users to... Read more about HENNGE One

Free Trial

Available

Pricing Type

$9600 Per user

Location

Japan

Topsec Cloud Solutions is an advanced email management software designed to help businesses protect, manage, and optimize their email communications. The platform provides tools for email filtering, archiving, encryption, and spam protection, ensuring that all emails are secure and compliant with industry standards. Topsec Cloud Solutions also offers real-time email tracking and reporting features... Read more about Topsec Cloud Solutions

Free Trial

Available

Pricing Type

$20 Per user

Location

Ireland

modusCloud is an advanced email security software designed to protect organizations from various email threats, including phishing, malware, and data breaches. This comprehensive solution employs machine learning and artificial intelligence to analyze email traffic in real time, identifying and neutralizing potential threats before they reach users’ inboxes. With its userfriendly interface, modu... Read more about modusCloud

Free Trial

Available

Pricing Type

Contact Vendor

Location

Canada

XNSPY is a robust employee monitoring software designed to help businesses ensure workplace productivity and security. This tool allows employers to discreetly monitor employee activities on company-owned devices, including smartphones and computers. XNSPY provides a comprehensive set of features such as real-time location tracking, call and message monitoring, and access to emails and multimedia ... Read more about XNSPY

Free Trial

Available

Pricing Type

$59.99 Per year

Location

United States

Topsec Attachment Sandboxing is an advanced email security software that provides protection against malicious email attachments by isolating them in a secure sandbox environment. This software analyzes the contents of email attachments to detect potential threats such as malware, ransomware, or phishing attempts. When an attachment is received, it is sent to a virtual sandbox where it is opened a... Read more about Topsec Attachment Sandboxing

Free Trial

NA

Pricing Type

Contact Vendor

Location

Ireland

Topsec DMARC Protection is a robust email security solution that helps organizations safeguard their email domain from fraudulent activities, such as phishing and email spoofing. DMARC (Domain-based Message Authentication, Reporting & Conformance) is an email authentication protocol that ensures the emails sent from your domain are legitimate and not forged by attackers. Topsec DMARC Protection en... Read more about Topsec DMARC Protection

Free Trial

NA

Pricing Type

Contact Vendor

Location

Ireland

SafeGuard Cyber Security is a comprehensive cybersecurity software designed to protect businesses from online threats across social media, messaging platforms, and cloud applications. The platform provides real-time threat detection, monitoring, and response tools that safeguard digital communications from phishing, malware, and other cyber threats. SafeGuard Cyber Security helps organizations sta... Read more about SafeGuard Cyber Security

Free Trial

NA

Pricing Type

Contact Vendor

Location

United States

Tsukaeru MailBuster is a powerful email security software designed to protect businesses from phishing attacks, spam, and other email-based threats. The platform uses advanced algorithms and machine learning to detect and block malicious emails before they reach users' inboxes, reducing the risk of data breaches and cyberattacks. Tsukaeru MailBuster offers features such as real-time email scanning... Read more about Tsukaeru MailBuster

Free Trial

NA

Pricing Type

$10210 Per month

Location

Japan

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