Simple Mail Transfer Protocol (SMTP)

Simple Mail Transfer Protocol (SMTP) is a set of rules used for sending emails over the internet. When you click "send" on an email, SMTP helps transfer your message from your email client to the recipient's email server. It ensures your message is delivered accurately, using specific addresses to route the email. SMTP operates primarily for sending emails, while other protocols, like POP3 and IMAP, handle receiving and storing them. Overall, SMTP is essential for email communication, helping ensure messages reach their intended destinations swiftly and securely.