What does SMTP stand for?

SMTP stands for Simple Mail Transfer Protocol. It is the protocol used for sending and receiving email over the internet. SMTP is a critical component of email transmission as it defines how email messages are sent and routed between servers. When a user sends an email, the SMTP server takes care of transferring the message to the appropriate recipient’s email server.

The term "Simple" in the name indicates that the protocol does not include many of the complex features found in more advanced messaging protocols, making it straightforward and efficient for basic email sending operations. It operates primarily on the transport layer, ensuring that the messages reach their destination reliably.

Other options offer variations of the term, but they do not accurately describe the protocol. "Secure Message Transmission Protocol" implies a focus on security that SMTP does not inherently provide. "Simple Message Transfer Protocol" uses a different terminology that is not recognized in the context of email. "Standard Mail Transfer Protocol" inaccurately suggests a standardized version of SMTP, but the correct term is specifically "Simple Mail Transfer Protocol."