SMTP

abbreviation for

, Computers.

1. Simple Mail Transfer Protocol: a set of standards used for transferring email messages from the sender to the recipient over the internet. Compare IMAP ( def ), Post Office Protocol ( def ).

SMTP

abbreviation for

1. simple mail transfer protocol: a protocol that enables e-mails to be sent between different servers

SMTP

/ ĕs′ĕm-tē-pē′ /

1. Short for Simple Mail Transfer Protocol. A protocol used on TCP/IP networks governing the transfer of e-mail.

Word History and Origins

Origin of SMTP¹

First recorded in 2000–05

Example Sentences

The attackers used a little-documented feature of most basic email (SMTP) servers called an “open relay.”

From The Daily Beast