We'll mainly be using the mail() function for now. The mail() function basically allows you to send someone an email through PHP.

Here's a quick example:

[php]<?php

$to = "someone@domain.com";

$subject = "Test";

$message = "Hi!";

$mail = mail($to,$subject,$message);



if(!$mail)

{

echo 'Mail Sent!';

}else{

echo 'Error sending mail!';

}

?>
[/php]

  Explanation:

We start off by assigning the basic values like to, subject, and the body of the email to their respective variables. Then we pass them to the mail() function (syntax: bool mail ( string to, string subject, string message [, string additional_headers [, string additional_parameters]] ) ), which fires it off to the receiver. 

And that about sums it up! Easy right?