SMTP (Simple Mail Transfer Protocol)

TL;DR: SMTP stands for Simple Mail Transfer Protocol, which is a standard protocol used for sending emails across the Internet. It facilitates the communication between mail servers to send and receive email messages.
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SMTP (Simple Mail Transfer Protocol) is a part of the TCP/IP protocol layer utilized to send and receive emails between the client and email servers or networks. Email application services use this protocol, and people commonly combine it with others like IMAP and POP3. SMTP was first launched in 1981 by Jon Postel, who is known as “the god of the Internet.”

Updated February 17, 2024
Axel Grubba is the founder of Findstack, a B2B software comparison platform, with his background spanning management consulting and venture capital where he invested in software. Recently, Axel has developed a passion for coding and enjoys traveling when he is not building and improving Findstack.