Best Email Security Gateways in 2026

Rspamd suits organizations operating their own mail systems and seeking gateway filtering with control over message data and custom rules.

Xeams suits organizations that want to run their own mail server or add filtering in front of an existing one.

Mailprotector

Mailprotector is aimed at managed service providers seeking email security and management products for their customers.

IRONSCALES Email Protect

It suits organizations using Microsoft 365 or Google Workspace that want email threat detection and automated remediation.

Symantec IT Management Suite

It is aimed at IT teams handling endpoint and server deployment, patching, asset records, and policy management in complex environments.

It suits Linux or Windows administrators who want to add filtering and mail-routing controls to existing servers.

Sophos Email suits organizations seeking email threat defense, data loss prevention, encryption, and user-awareness features.

SpamHero suits organizations that want cloud filtering in front of a domain’s mail server, including Microsoft 365 or Google Workspace users.

INKY Email Security

INKY suits organizations using Microsoft 365 or Google Workspace that need email threat detection and user guidance.

Darktrace / EMAIL

It suits security teams protecting organizational email and reducing SOC investigations.

Spamihilator suits Windows users with POP3 or IMAP email clients who want local incoming-mail filtering.

It suits healthcare-oriented teams sending email through web, Outlook, or Gmail and requiring password-based recipient verification.