👉 SMTP, or Simple Mail Transfer Protocol, is a fundamental protocol used for sending emails across the internet. It operates by facilitating the transfer of email messages between mail servers, ensuring that the recipient's email server can correctly route the message to its destination. When an email is sent, the SMTP server on the sender's machine authenticates the sender, checks the email content, and then uses a series of commands to relay the message through various mail servers until it reaches the recipient's email server. This process involves several steps, including authentication, message formatting, and transmission, ensuring that emails are delivered reliably and securely across different networks and systems.
