What is SMTP?

• Friday, Jan 21, 2022
• Posted by Girish Venkatachalam
• SMTP, protocols, handshake, RFC

What is SMTP? SMTP overview Simple mail transfer protocol is one of the first text based protocols that software engineers play with. You can easily fire up a netcat or telnet session,talk to a mail server and deliver email. It is very similar to HTTP and it is stateful protocol, a transaction starts once you issue the DATA command. The excitement of seeing a mail sent by using low level semantics is not only very gratifying for a smart programmer it also used to serve a useful purpose.

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