At its core, an SMTP server functions as a dispatcher for email messages. When a sender initiates the process of sending an email, their email client communicates with their designated SMTP server. The server then takes charge of forwarding the message to its intended recipient's SMTP server, which in turn delivers it to the recipient's inbox.
SMTP servers are characterized by their simplicity and efficiency. They follow a set of standardized rules and protocols to ensure that email messages are properly formatted, routed, and ultimately delivered. These servers handle various tasks, including:
