Sendmail

Sendmail is a program used to send and receive email messages on computer networks, especially on Unix-based systems. It acts as an intermediary that routes emails from one computer to another, ensuring messages reach the correct recipients. Think of it as a digital postal service operating in the background, managing the delivery of emails efficiently. Sendmail handles various email protocols, manages mail queues, and ensures secure transfers. It’s a foundational component for email communication within organizations and the internet, enabling users to send, receive, and manage electronic messages reliably.