What is SMTP?


SMTP is a protocol for receiving and sending emails. As a text-based protocol, users can communicate with a mail receiver by issuing command strings and supplying necessary data.

An SMTP only deals with plain text, hence the word ‘simple’ in its title. Graphics or fonts cannot be processed by it.

 Want to know when SMTP was first introduced? Click next page.

Name of Technology:

Simple Mail Transfer Protocol

Year Introduced:


Open Source or Proprietary:


Main technology category:

Mail transfer



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