List of the Top 8 Free Secure Email Gateway Software in 2025

Select a secure email hosting solution that aligns with your business requirements. By utilizing a reliable, encrypted, and ad-free email service, you can effectively manage your company's email communications. With Zoho Mail, you benefit from advanced data centers equipped with top-notch security protocols and continuous monitoring, guaranteeing an impressive uptime of 99.9%. Take advantage of secure email hosting that ensures encryption both at rest and in transit, complemented by S/MIME message encryption for heightened security. Create a distinct domain for your company and establish customized email addresses for every team member, which enhances your brand's recognition and trustworthiness. The comprehensive Control Panel offered by Zoho Mail acts as the primary interface for administrators, allowing for effortless management of all settings, configurations, and customizations. Administrators have the ability to add users, manage group aliases, and set policies to control email content within the organization. Moreover, retain emails for a specified period to fulfill compliance obligations and defend against potential legal issues. The e-Discovery feature facilitates quick access to these archived emails, ensuring your business can efficiently address inquiries or audits. Choosing Zoho Mail not only secures your email communications but also equips your business for long-term success with a dependable hosting solution that prioritizes security and user management. This commitment to safety and efficiency can be a game-changer in today's competitive landscape.

MDaemon Technologies has created the email threat detection technology utilized by Security Gateway. For over two decades, this trailblazer in the email industry has been safeguarding email servers from various dangers like viruses, spam, and phishing. Organizations rely on their expertise to maintain the security of their email exchanges. Their protection extends to all email platforms, such as Microsoft Exchange and Office 365, among others. With a dedicated team of email security experts, Security Gateway simplifies the management of your organization’s email security needs. Utilizing the latest advancements in email threat detection technology and policy enforcement tools, Security Gateway ensures that legitimate emails are efficiently delivered to and from your users. Additionally, the cloud service offered by Security Gateway is straightforward to implement, allowing you to concentrate on other vital responsibilities. To learn more about the functionalities of Security Gateway, be sure to check out this informative video.

Make a wise investment today to bolster your defenses against email security threats by acquiring a robust email security solution tailored for small businesses at affordable rates. Cybercriminals are increasingly targeting high-level executives like CEOs and CFOs across various sectors, alongside crucial departments such as HR and Accounting. While Office 365 offers some level of protection, its capabilities are insufficient to effectively combat impersonations, email fraud, and phishing attacks. Relying solely on custom transport rules to block domains and guard against employee impersonations can leave significant gaps in security. PhishProtection stands out as it is compatible with all email servers, devices, and SMTP services, ensuring comprehensive protection regardless of your location or the email client you use. Whether you access your emails through your phone, Outlook, or other platforms, this solution offers top-notch security for both Android and iOS devices, making it a critical investment for safeguarding your business communications. In today’s evolving cyber landscape, prioritizing email security is not just smart; it's essential for every small business.

Having the capability to modify and remove messages, along with the option for automatic deletion, clearing chat histories, and fully erasing all records is crucial. Users are empowered to disconnect devices remotely, employ a deceptive secret phrase, and activate features such as auto-lock and auto-logout during periods of inactivity. There are functionalities to conceal contacts and establish blacklists, as well as customized visibility options for individual contacts, enabling precise configuration of contact permissions. Furthermore, tasks can be delegated to both oneself and team members, with mechanisms in place to monitor progress and ensure accountability. Users also have the ability to securely store and manage their passwords, sharing them with selected contacts as needed. Enhancing collaboration is further supported by setting team objectives and tracking the resolution of various challenges, which cultivates a more effective work atmosphere. Overall, this extensive suite of features greatly enhances both communication and organizational capabilities within any group setting, leading to improved teamwork and efficiency.

RMail®, an e-security solution offered by RPost®, emerged as a prominent global leader in the year 2000. Specializing in user-friendly email encryption, RMail provides services that ensure privacy, compliance, legal delivery proof, secure file sharing, email rights management, protection against email impostors, and overall email encryption. The transmission security services provided by RMail are particularly beneficial for professionals and organizations tasked with sending sensitive or consumer-regulated data. These offerings extend beyond the capabilities of standard email and encompass: (a) a simplified and more automated email encryption process for enhanced privacy compliance; (b) a reliable proof record detailing the sender, recipient, and content of each email; (c) confidence regarding the delivery and open status of critical emails that are time-sensitive; (d) a timestamped confirmation of content delivery; and (e) the ability to securely share large files, making RMail an indispensable tool for modern communication needs.

The Secure Email Gateway provides a powerful solution for businesses by utilizing a sophisticated array of spam filters, antivirus mechanisms, and content analysis tools to prevent unwanted emails from breaching the company’s network. Since the security needs may differ across various departments, it allows for the implementation of customized security protocols that cater specifically to the roles of employees in areas such as finance or sales. Dome Anti-spam facilitates the creation of multiple profiles, each designed with unique security features and restrictions to meet diverse organizational needs. Moreover, its containment capabilities offer protection against new threats such as ransomware and zero-day vulnerabilities. The Valkyrie file verdict system evaluates unknown files, enabling users to safely open attachments with confidence that they are protected from potential harm. Comodo's advanced containment technology ensures that all suspected threats are quarantined before they can impact endpoints, thereby eliminating the risk of malware infections from any source. This all-encompassing strategy not only bolsters security measures but also empowers employees to execute their responsibilities without apprehension regarding digital dangers, fostering a more productive work environment. The continuous evolution of these technologies will further enhance organizational resilience against future cyber threats.

Introducing the ultimate file security solution that ensures the complete protection of files entering your organization. Unlike conventional detection-based systems that only spot and block potentially harmful content, Positive Selection is dedicated to pinpointing the safe elements within every file, guaranteeing that all files delivered to your enterprise are fully secure. This comprehensive approach is applicable to any file, at any time, and from any source. Votiro’s Secure File Gateway possesses in-depth knowledge of various file types, allowing it to effectively neutralize threats across a vast range of files, regardless of their entry point into your organization. By adopting this state-of-the-art solution, businesses can confidently operate, secure in the knowledge that their data is safeguarded against potential risks. This innovation not only enhances security but also fosters a more efficient workflow within the organization.

Our cloud-native framework delivers instant defense against concealed threats while also protecting your endpoints from known threat signatures. Comodo has introduced an innovative approach to endpoint security that specifically tackles the limitations of traditional security measures. The Dragon platform lays down the crucial foundations for comprehensive next-generation endpoint protection. By utilizing the Dragon Platform’s efficient agent, which harnesses the power of artificial intelligence (AI) and Auto Containment, you can effectively enhance both your cybersecurity and operational productivity. Comodo covers all aspects of cybersecurity required for implementing breach protection, guaranteeing immediate benefits right from the start. The platform distinguishes itself in the market with a 100% accurate verdict reached within 45 seconds for 92% of signatures, while the remaining 8% are handled by human experts under a four-hour service level agreement. Additionally, routine automatic updates of signatures streamline deployment across your entire infrastructure, leading to a significant reduction in operational costs while maintaining strong security protocols. This solution not only boosts protection but also simplifies the entire process, making it easier for your organization to remain secure without added complexity. Consequently, you can focus on your core business objectives while feeling confident in the robustness of your cybersecurity measures.