Secure Email Gateway - Enterprise
Top Microsoft Exchange Online Protection Alternatives and Competitors

FortiMail delivers advanced multi-layered protection against the full spectrum of email-borne threats. Powered by FortiGuard Labs threat intelligence and integrated into the Fortinet Security Fabric, FortiMail helps your organization prevent, detect, and respond to email-based threats including spam, phishing, malware, zero-day threats, impersonation, and Business Email Compromise (BEC) attacks.

Prevent the Most Common Form of Data Loss; Email Data Loss Prevention (DLP) Get control over the top vector for data theft by applying your data security policies to outbound email.

Mimecast Advanced Email Security blocks the most dangerous attacks. As the top attack vector, email demands the strongest possible protection. We block the most dangerous email-borne attacks, from phishing and ransomware to social engineering, payment fraud, and impersonation.

Cisco Email Security offers high availability email protection against the constant, dynamic, rapidly changing threats affecting email today.

Safeguard Microsoft Office 365, Google G Suite, and on-premises email with the industry’s most complete email security solution.

Detect and stop advanced threats Prevent known and unknown threats with Advanced Threat Protection—even those that don't use malware—from reaching your people. Advanced Threat Protection is a security solution that defends against complex malware or hacking attacks that target sensitive data within an organization. Protect against advanced threats with the industry’s most robust email security platform and the most accurate view of the email threat landscape.

The Barracuda Email Security Gateway is an email security gateway that manages and filters all inbound and outbound email traffic to protect organizations from email-borne threats and data leaks. As a complete email management solution, the Barracuda Email Security Gateway lets organizations encrypt messages and leverage the cloud to spool email if mail servers become unavailable..

Our purpose-built secure email gateway is an all-in-one solution for email encryption, DLP, anti-spam and threat protection. It provides advanced protection from today’s sophisticated spear phishing attacks and gives you full control over data leaving your organization via email.

The Symantec™ Messaging Gateway is an on-premise email security solution that provides inbound and outbound protection against the latest messaging threats, including ransomware, spear phishing, and business email compromise (BEC).It catches more than 99 percent of spam and provides built-in data protection capabilities to keep your email secure and confidential, and it effectively responds to new messaging threats with real-time antispam and antimalware intelligence.