Email Gateway
An email gateway is a software or hardware solution that acts as an intermediary between an organization's internal email system and external email networks, such as the internet. It filters, routes, and secures inbound and outbound email traffic to protect against threats like spam, malware, and phishing, while ensuring compliance with policies and regulations. Common features include spam filtering, antivirus scanning, encryption, and data loss prevention.
Developers should learn about email gateways when building or maintaining email systems for organizations, as they are critical for security, compliance, and reliability in email communications. Use cases include implementing email security in corporate environments, integrating with cloud services like Office 365 or Gmail, and developing applications that require automated email processing or filtering. Knowledge is also valuable for roles in DevOps, cybersecurity, or system administration where email infrastructure management is involved.