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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NetCloud SASE is an advanced IoT software designed to provide organizations with a secure and scalable network architecture for managing connected devices. This platform offers users tools to monitor, manage, and protect IoT devices across various environments, ensuring seamless connectivity and data security. With NetCloud SASE, businesses can easily implement secure access controls, optimize net... Read more about NetCloud SASE

Free Trial

NA

Pricing Type

Contact Vendor

Location

United States

Perception Point is an email security software designed to protect organizations from advanced email threats, including phishing and malware attacks. This platform provides real-time threat detection and response capabilities, ensuring that organizations can safeguard their sensitive information and maintain business continuity. With features such as advanced threat intelligence, automated remedia... Read more about Perception Point

Free Trial

Available

Pricing Type

$5 Per month

Location

Israel

Mail Assure is a robust anti-spam software designed to protect businesses from unwanted and malicious email threats, ensuring secure and efficient email communication. This comprehensive platform offers a suite of tools that filter out spam, phishing attempts, and other malicious emails before they reach your inbox, safeguarding your organization from potential security breaches and productivity l... Read more about Mail Assure

Free Trial

Available

Pricing Type

$1 Per feautre

Location

United States

MailWasher is a popular anti-spam software designed to help users filter unwanted emails before they reach their inbox. It allows users to preview emails on the server, identify spam, and delete suspicious messages before downloading them. MailWasher’s advanced filtering technology detects and blocks spam, phishing attempts, and viruses, protecting users from malicious content. The software also... Read more about MailWasher

Free Trial

Available

Pricing Type

$24.95 Per year

Location

New Zealand

Egress Protect is an advanced email security software that safeguards sensitive information from unauthorized access and data breaches. Designed for businesses that prioritize data protection, this platform employs encryption, secure file sharing, and real-time monitoring to ensure that confidential communications remain secure. Egress Protect seamlessly integrates with existing email systems, pro... Read more about Egress Protect

Free Trial

Available

Pricing Type

$90 Per user

Location

United Kingdom

Menlo Security is a cutting-edge email security software solution designed to protect organizations from email-borne threats such as phishing, malware, and spam. The platform uses advanced machine learning and isolation technology to detect and block malicious content before it reaches users’ inboxes. By isolating potentially harmful email content, Menlo Security prevents attacks from executing ... Read more about Menlo Security

Free Trial

NA

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Location

United Kingdom

Empower Information Sharing. Enforce Data Security.

Virtru is an email security software that helps businesses protect sensitive data and ensure secure email communication. Designed with ease of use in mind, Virtru integrates seamlessly with popular email platforms like Gmail and Microsoft Outlook, offering end-to-end encryption for both outgoing and incoming emails. Virtru allows users to control access to email content, such as setting expiration... Read more about Virtru

Free Trial

NA

Pricing Type

$119 Per month

Location

United States

Agari Phishing Defense is a sophisticated email security software designed to protect organizations from phishing attacks and email fraud. This platform provides users with tools to detect, prevent, and respond to email-based threats effectively. With Agari, businesses can automate threat detection using advanced machine learning algorithms that analyze email patterns and identify malicious activi... Read more about Agari Phishing Defense

Free Trial

NA

Pricing Type

Contact Vendor

Location

United States

Fortra's Agari DMARC Protection is a specialized cybersecurity software designed to help organizations protect their email domains from phishing attacks and spoofing. This platform provides users with tools to implement Domain-based Message Authentication, Reporting, and Conformance (DMARC) policies, ensuring that only authorized emails are delivered. With Agari DMARC Protection, businesses can ea... Read more about Fortra's Agari DMARC Protection

Free Trial

NA

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Location

United States

Agari Secure Email Cloud is a leading cybersecurity software solution designed to protect organizations from advanced email threats, including phishing, spoofing, and business email compromise. By leveraging artificial intelligence and machine learning, Agari analyzes email traffic in real-time to detect malicious content and prevent attacks before they reach the inbox. The software offers advance... Read more about Agari Secure Email Cloud

Free Trial

Available

Pricing Type

Contact Vendor

Location

United States

Secure Email is a robust email security software that protects businesses from email-based threats, including phishing attacks, malware, and data breaches. The platform uses advanced encryption protocols to secure inbound and outbound emails, ensuring that sensitive data remains protected throughout its transmission. Secure Email's real-time threat detection capabilities scan incoming emails for m... Read more about Secure Email

Free Trial

NA

Pricing Type

Contact Vendor

Location

United States

UniSender is a powerful email marketing software designed to help businesses create, manage, and optimize their email campaigns with ease and efficiency. This comprehensive platform offers a suite of tools that enable users to design visually appealing emails using customizable templates, segment their audience for targeted messaging, and automate campaign workflows to ensure timely and relevant c... Read more about UniSender

Free Trial

NA

Pricing Type

$10 Per month

Location

Ukraine

MailGuard is a robust cybersecurity software designed to protect organizations from email threats and enhance overall digital security. This platform provides comprehensive tools for monitoring, detecting, and responding to email-based attacks efficiently. With MailGuard, users can easily filter out malicious emails, phishing attempts, and spam, ensuring secure communication within the organizatio... Read more about MailGuard

Free Trial

Available

Pricing Type

Contact Vendor

Location

Australia

Secure Marketing is a powerful email marketing software designed to help businesses create, manage, and track their email campaigns with ease. It offers a range of tools for designing visually appealing emails, segmenting audiences, and automating marketing workflows. The platform prioritizes security by providing features that ensure your emails are sent safely, minimizing the risk of data breach... Read more about Secure Marketing

Free Trial

NA

Pricing Type

$450 Per month

Location

United States

WithSecure Elements Collaboration Protection is an email security software designed to protect businesses from phishing, malware, and other email-based threats. The platform provides tools for scanning incoming and outgoing emails for malicious attachments, links, and suspicious content, ensuring secure communication. WithSecure Elements includes advanced AI-driven threat detection, real-time bloc... Read more about WithSecure Elements Collaboration Protection

Free Trial

Available

Pricing Type

Contact Vendor

Location

Finland

DMARC Monitor is a comprehensive email verification tool designed to help organizations protect their email domains from fraudulent activity and phishing attacks. DMARC (Domain-based Message Authentication, Reporting, and Conformance) Monitor enables businesses to implement and manage DMARC authentication protocols, ensuring that only authorized senders can use their email domains. By enforcing DM... Read more about DMARC Monitor

Free Trial

NA

Pricing Type

$18 Per month

Location

United States

SlashNext Mobile is a cutting-edge email security software designed to protect mobile users from phishing attacks and other malicious threats. As mobile devices become an increasingly common entry point for cyberattacks, SlashNext Mobile provides real-time protection against deceptive emails that attempt to steal sensitive information or infect systems with malware. By using AI-driven algorithms, ... Read more about SlashNext Mobile

Free Trial

NA

Pricing Type

Contact Vendor

Location

United States

Modernizing Secure File and Email Data Communications for the Compliance Era

Kiteworks is a comprehensive software platform designed for secure file sharing and collaboration, particularly useful for businesses dealing with sensitive information. It acts as a secure conduit for transferring and managing confidential data, ensuring high-level security and compliance with various data protection regulations. Kiteworks stands out for its advanced security features, such as en... Read more about Kiteworks

Free Trial

NA

Pricing Type

Contact Vendor

Location

United States

backup, replication, Office 365 backup, VMWare backup, data backup,

Comprehensive protection for critical email data in Exchange Online, Outlook, and Microsoft 365. NAKIVO Backup & Replication enhances email security with automated backup, disaster recovery, and ransomware protection. The solution ensures seamless and secure email data backup and instant recovery, safeguarding vital business communications effectively. You can manage all data protection activitie... Read more about NAKIVO Backup & Replication

Free Trial

15 Days

Pricing Type

Contact Vendor

Location

United States

Zerospam is a cloudbased antispam software designed to protect businesses from email threats, including spam, phishing, and malware. Using advanced filtering technology, Zerospam accurately identifies and blocks malicious emails, preventing security breaches and data loss. The software’s AIdriven algorithms continuously learn from incoming threats, improving detection accuracy and adapting to ne... Read more about Zerospam

Free Trial

Available

Pricing Type

Contact Vendor

Location

Germany

Email Archiving software is a solution designed to store and manage emails in a secure, organized, and easily searchable manner. Ideal for businesses of all sizes, this software provides an efficient way to archive email communications for compliance, legal purposes, or simple data management. The software automatically captures incoming and outgoing emails, attachments, and metadata, creating a d... Read more about Email Archiving

Free Trial

Available

Pricing Type

Contact Vendor

Location

Germany

Advanced Threat Protection (ATP) is an email security software solution designed to protect organizations from advanced cyber threats, such as phishing attacks, malware, and ransomware. ATP uses sophisticated algorithms and machine learning to analyze incoming emails in real-time, detecting suspicious attachments, links, or sender patterns. It provides multiple layers of security, including email ... Read more about Advanced Threat Protection

Free Trial

Available

Pricing Type

Contact Vendor

Location

Germany

Valimail Trust Layer is a leading email security software designed to protect organizations from phishing attacks and email fraud. The platform utilizes advanced authentication protocols to ensure that only legitimate emails are delivered to recipients. Valimail helps businesses implement DMARC, DKIM, and SPF standards, enhancing their email security posture and reducing the risk of unauthorized e... Read more about Valimail Trust Layer

Free Trial

Available

Pricing Type

$5000 Per user

Location

United States

Guardio is a comprehensive computer security software designed to protect users from online threats such as malware, phishing attacks, and identity theft. The software offers real-time protection against malicious websites and suspicious online activities, ensuring that users can browse the internet securely. Guardio provides advanced features like automatic malware scanning, ad-blocking, and data... Read more about Guardio

Free Trial

Available

Pricing Type

$9.99 Per month

Location

Israel

Cybersecurity solutions to protect your business

SpamTitan is a robust antispam software solution designed to protect businesses from unwanted email threats, ensuring a secure and efficient email communication environment. This platform employs advanced filtering techniques to block spam, phishing attempts, and malware, allowing users to focus on legitimate emails without the distraction of unwanted messages. With SpamTitan, organizations can cu... Read more about SpamTitan

Free Trial

Available

Pricing Type

Contact Vendor

Location

Ireland

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