SMTP stands for

SMTP stands for Simple Mail Transfer Protocol, the standard for pushing email across the internet.

Simplest Mail Transfer Protocol uses a wrong superlative form of the first word.

Sample Mail Transfer Protocol replaces Simple with Sample and is incorrect.

Separate Mail Transfer Protocol misnames the first word entirely.

The protocol was defined in the early 1980s and remains the backbone of mail sending.

Its command set includes short verbs like HELO, MAIL, RCPT and DATA.