Compare the Top Secure Email Gateway Software for Mac as of November 2025

What is Secure Email Gateway Software for Mac?

Secure email gateways protect organizations from email-based threats such as phishing, malware, spam, and data breaches. They analyze incoming and outgoing messages to detect suspicious content, malicious attachments, and unauthorized data sharing. These gateways enforce email security policies, filter harmful traffic, and provide encryption to safeguard sensitive communications. Many platforms also integrate with cloud email services like Microsoft 365 and Google Workspace to extend protection across hybrid environments. Ultimately, secure email gateways help maintain compliance, protect confidential information, and ensure safe, reliable business communication. Compare and read user reviews of the best Secure Email Gateway software for Mac currently available using the table below. This list is updated regularly.

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    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
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