Compare the Top Free Secure Email Gateway Software as of July 2025

What is Free Secure Email Gateway Software?

Secure email gateway software provides a security platform that identifies and prevents web-based threats through the use of filters and labeling. Compare and read user reviews of the best Free Secure Email Gateway software currently available using the table below. This list is updated regularly.

  • 1
    Zoho Mail
    Secure email hosting for your business. Host your business email on a secure, encrypted, privacy-guaranteed, and ad-free email service. Zoho Mail's data centers have top-notch security and surveillance, with a reliable 99.9% uptime. Benefit from secure email hosting that supports encryption both at rest and end-to-end, along with S/MIME message encryption. Create a domain for your business and set up custom email addresses for users. Unique and professional email addresses give your company the visibility and authenticity it deserves. Zoho Mail's powerful Control Panel is the admin's go-to place for all settings, configuration, and customization. Add users, manage group aliases, set up policies to moderate business email content, and more. Retain emails across your organization for a specified period to comply with company standards and to counter legal attacks. e-Discovery helps discover such retained emails quickly.
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    Starting Price: $2.00/month/user
  • 2
    SecurityGateway™ for Email Servers
    Developed by MDaemon Technologies, an email industry pioneer, Security Gateway's email threat detection technology has been protecting email servers from viruses, spam, phishing, data loss and other threats for over 20 years. Simply put, companies trust our expertise to help keep email communications safe. We protect all email platforms including Microsoft Exchange, Office 365 and others. Let our team of email security experts take the headache out of managing your company's email security needs. Security Gateway uses the latest email threat detection technology and policy enforcement tools to keep good emails flowing to and from your users. The Security Gateway cloud service can be deployed quickly and easily, allowing you to focus on other important tasks. Watch a short video to learn about some of the Security Gateway features.
    Starting Price: $1 per user per month
  • 3
    PhishProtection
    Make your smartest investment to reduce email security threats today, and get a comprehensive email security protection solution with small business pricing. Cybercriminals are targeting CEOs, CFOs, HR, Accounting Departments and regular employees across every industry. As you know Office 365 is extremely limited in the protection that you can configure to stop impersonations, email fraud and phishing. There are only so many custom transport rules you can build to constantly block domains or protect against employee impersonations. PhishProtection works on every email server, device or smtp service. No matter if you are on your phone, or outlook or any email client anywhere, we can protect you. It offers best-in-class security to iOS and Android devices alike.
    Starting Price: $100/month/user
  • 4
    VIPole

    VIPole

    VIPole

    Message editing and deleting, auto-delete messages, chat window clearing and complete history wiping. Disconnecting devices remotely, fake secret phrase, auto lock and auto logout on inactivity. Hidden and blacklist contacts, individual visibility settings for contacts, configurable contact authorization. Assign tasks to yourself and colleagues, track the progress. Store and organize passwords, securely share them with contacts. Foster collaboration by setting goals for the team and monitoring the solved issues.
    Starting Price: $5.99 per month
  • 5
    RMail

    RMail

    RPost

    RMail® is the e-security platform by RPost®, a global leader since 2000. 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, document rights management, and AI-infused services to prevent data leaks and human e-security errors. RMail’s transmission e-security services are most often used by businesspeople or business systems that send important, sensitive, or consumer-regulated information. These RMail services are generally applied to those messages where the sender needs functionality beyond standard email in terms of (a) easier to use and more automated email encryption for privacy compliance, (b) returning a verifiable proof record of who said what to whom by email, (c) assurance and peace of mind related to delivery and open status of important and time-deadline email, (d) need a timestamped proof of content delivered, (f) need to share large files securely.
    Starting Price: $7/month/user
  • 6
    Comodo Dome Antispam
    Secure Email Gateway is an enterprise anti-spam and threat prevention system that uses a sophisticated array of spam filters, anti-virus scanners and content analysis engines to prevent unsolicited mail from ever entering your network. Security needs differ from employee to employee. You may want to apply different security levels to different employees such as from finance or sales departments. Dome Anti-spam gives you the freedom to define different types of profiles with different security features and restrictions. Containment protects from the newest forms of ransomware, zero-malware, and other advanced threats. The Valkyrie file verdict system analyzes unknown files. Users are free to open, execute and use the attachments with ZERO risk of infection. Comodo's unique containment technology ensures that risks are fully contained before reaching the end point, so there is no risk of infection, even from the newest malware.
    Starting Price: $4.00/one-time/user
  • 7
    Votiro

    Votiro

    Votiro

    The only file security solution that ensures all files coming into your enterprise are completely safe. Unlike detection-based file security solutions that scan for suspicious elements and block files, Positive Selection singles out only the safe elements of each file, ensuring every file that enters your organization is 100% safe. Any file, anywhere, anytime. With a deep, expert understanding of all types of files, Votiro’s Secure File Gateway eliminates threats from the widest possible range of files, no matter how they enter your organization.
  • 8
    Comodo Dragon Platform
    Our completely cloud-native framework delivers you zero day protection against undetectable threats while defending your endpoints from known threat signatures. Comodo introduced a new approach to endpoint protection, engineered to solve the issue of legacy security solutions. The Dragon platform delivers the foundation principles for complete next-generation endpoint protection. Easily improve your cybersecurity and performance with the Dragon Platform's lightweight agent delivering artificial intelligence (AI) and Auto Containment to stop all threats. Comodo delivers everything cybersecurity you ever needed to activate breach protection immediate value added from day one. 100% trusted verdict within 45 seconds on 92% of signatures via analysis, and 4 hours SLA on the remaining 8% via human experts. Automatic signature updates that simplifies deployment across your entire environment to lower operational costs.
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