Best Secure Email Gateway Software

Compare the Top Secure Email Gateway Software as of July 2025

What is 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 Secure Email Gateway software currently available using the table below. This list is updated regularly.

  • 1
    NeoCertified Secure Email
    NeoCertified protects sensitive information through our secure email application across our versatile Cloud-based platform on any web browser, through Microsoft Office 365/Outlook plug-ins, and Gmail integration. iPhone + Android mobile apps are also available directly on your mobile devices. We have provided federally compliant, secure email solutions since 2002, and have helped businesses send and receive secure emails on any web browser or mobile device. NeoCertified also works across all email providers to give businesses the flexibility and assured protection they desire and deserve.
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    Starting Price: $99.00/year/user
  • 2
    SEPPmail

    SEPPmail

    SEPPmail AG

    Sending and receiving digitally signed and encrypted emails is easier and more convenient than ever before. Thanks to the Secure E-Mail Gateway from SEPPmail with integrated and patented GINA procedure for spontaneous encryption, SMEs and large companies secure their entire e-mail communication at the highest level, with the least effort and simplest handling for sender and recipient. With its comprehensive Secure Email solution, SEPPmail is setting new standards for secure, GDPR-compliant email communication. As one of the world’s leading email encryption and signature solutions, SEPPmail includes all the features to protect the sending of confidential data via email, guarantee the authenticity of the sender and ensure the confidentiality and integrity of the message. Thanks to its modularity, the secure e-mail gateway solution can be configured according to customer-specific requirements and expanded seamlessly.
    Starting Price: 4.5 € per user per month
  • 3
    Spambrella

    Spambrella

    Spambrella

    Dynamically classify imposter email. Preemptively identify and sandbox suspicious URLs. Leverage big-data analysis to accurately classify bulk mail. All within a single service that connects with Microsoft 365 and Google Workspace. Spambrella’s Email Security and User Awareness Training technology is used by some of the World’s largest and most successful security-conscious companies in a multitude of continents and environments. Delivered on a global scale, Spambrella is ready to unify your email security and user awareness training requirements. Think of us as your outsourced email security team! We have deep technical expertise of all other service providers such as MxLogic, Mimecast, Symantec.cloud and know how to migrate you effortlessly. Schedule a demo today with our cybersecurity experts to uncover email threats targeting your email users.
    Starting Price: $1.00
  • 4
    LuxSci

    LuxSci

    Lux Scientiae

    LuxSci provides HIPAA-compliant web and email communications services. LuxSci creates uniquely secure and customizable enterprise-grade environments and solutions that enable organizations to confidently meet their specific business and security needs at scale. LuxSci’s HIPAA-compliant email and web solutions are HITRUST certified and include: • Secure High Volume Sending for delivering massive volumes of transactional and marketing emails. • Secure SMTP Connector for encrypting outbound emails sent from Microsoft 365 and Google Workspace. • Secure Email Marketing platform for creating and sending marketing campaigns with ePHI. • Secure Email Hosting for reliable and secure day-to-day business email. • Fully managed Secure Web and Database Hosting for web applications that require compliance. • Secure Forms to safely collect and store sensitive information. LuxSci provides a full suite of secure technology for companies requiring compliant web and email services.
    Starting Price: $4 per/user/month
  • 5
    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
  • 6
    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
  • 7
    SendSafely

    SendSafely

    SendSafely

    The end-to-end encryption platform for modern business. SendSafely lets you easily exchange encrypted files and information with anyone on any device. Let us take the headache out of secure file exchange. Trusted by leading brands that understand the importance of keeping customer information safe. SendSafely works natively with all major browsers. No software to install, no encryption keys to manage. Use SendSafely for compliance with regulations like HIPAA (BAA available), GDPR, CCPA and more. Use one of our pre-built platform connectors or easily create your own integration with our developer API. Features designed for businesses such as user administration, single sign on and custom branding. SendSafely integrates with many popular third party systems, adding end-to-end encryption to the platforms your users already know and love. Extend the capabilities of your existing apps and infrastructure by seamlessly adding encryption to your existing workflows.
    Starting Price: $11.50/user/month
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