Xeams may suit organizations seeking a mail server and filtering gateway, including teams managing mail through a web interface.
Free plan Free trial From $1.67 a month, billed yearly WebWindowsMacLinuxAPISelf-hosted
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Best Email Security Gateways 2026
Email security gateways help organizations evaluate protection and filtering for their mail environments. Compared on deployment model and support for Google Workspace and Microsoft 365, the entries offer compatibility details to check against your setup. Impersonation protection, malware sandboxing, and outbound filtering describe additional security capabilities; free-plan availability and paid-from pricing add cost context. Check Point Harmony SASE, IRONSCALES Email Protect, and VM Backup are among the named options, alongside Mailprotector and Mimecast Data Leak Prevention. Consider which mail platforms you need to cover, then compare the stated protections and deployment details to the requirements of your email environment.
02
Hermes Secure Email Gateway
Hermes is presented for SMBs, MSPs, self-hosters, privacy-focused teams and organizations adding a gateway to existing mail services.
WebLinuxSelf-hosted Record5.7 Visit
03
Rspamd
Rspamd suits organizations operating their own mail systems that want gateway filtering and on-premises deployment.
WebMacLinux+2 Record5.6 Visit
04
SpamHero Business Email Security
It suits organizations wanting cloud email filtering, quarantine management, continuity, and Microsoft 365 or Google Workspace support.
WebAPI Record4.8 Visit
05
Mailprotector
Mailprotector is for managed service providers seeking email security products for client environments.
WebAPI Record4.7 Visit
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WindowsLinuxSelf-hosted Free plan Record4.7 Visit It suits Linux and Windows administrators seeking an email security gateway for existing servers, including administrators without advanced email security experience.
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IRONSCALES Email Protect
AndroidiPhone & iPadWeb+1 — Record4.5 Visit Email Protect suits organizations seeking automated email threat detection and remediation, particularly those using Microsoft 365 or Google Workspace.
8
Spamihilator
Windows Free plan Record4.4 Visit Spamihilator may suit Windows users whose mail clients use POP3 or IMAP and who want to filter incoming spam.
9
MailScanner
LinuxSelf-hosted Free plan Record4.3 Visit MailScanner suits administrators managing Linux or Unix-based email gateways who can install and configure server-level software.
11
Symantec IT Management Suite
WebWindowsMac+3 — Record4.2 Visit It is aimed at IT teams managing endpoint and server deployment, patching, assets, and policies across complex environments.
13
INKY Email Security
Web — Record4.0 Visit It suits organizations using Microsoft 365 or Google Workspace that need phishing, malware, impersonation, and social-engineering protection.
15
Sophos Secure Message
Web — Record4.0 Visit Organizations seeking cloud email threat defense, encryption, data-loss prevention, and user-awareness capabilities.
18
Abnormal Email Security
WebAPI — Record3.7 Visit Abnormal Email Security is aimed at CISOs, security leaders, and SOC teams.
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Darktrace / EMAIL
WebAPI — Record3.7 Visit It is intended for security teams protecting organizations against email and collaboration threats while reducing SOC investigations.
20
Paubox Email Encryption
Web $29 a month, billed yearly Record3.7 Visit It suits healthcare teams needing encrypted web email with Outlook or Gmail integration and administrative controls.
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