
The Simple Mail Transfer Protocol (SMTP) is a communication protocol for electronic mail transmission.

In computing, the Post Office Protocol (POP) is an application-layer Internet standard protocol used by e-mail clients to retrieve e-mail from a mail server. Fast, flexible and pragmatic, PHP powers everything from your blog to the most popular websites in the world. PHP is a popular general-purpose scripting language that is especially suited to web development.

Some of the features of the PHPMailer we would tap into are further listed below:

Sending emails directly by PHP code requires a high-level familiarity with Simple Mail Transfer Protocol ( SMTP) standard protocol and related issues (such as Carriage return) and vulnerabilities about Email Injection for spamming. PHPMailer is a code library to send (transport) emails safely and easily via PHP code from a web server (mail user agent to the mail submission server).
