There are many ways to send mail in PHP.
You can use PHPs mail function.
http://php.net/manual/en/function.mail.php
<?php
// The message
$message = "Line 1\r\nLine 2\r\nLine 3";
// In case any of our lines are larger than 70 characters, we should use wordwrap()
$message = wordwrap($message, 70, "\r\n");
// Send
mail('caffeinated@example.com', 'My Subject', $message);
?>
SwiftMailer is also worth looking at
It has lots of features for sending mail in different ways (transport types, attachments etc), and it's easy to use.
http://swiftmailer.org/
http://swiftmailer.org/docs/sending.html
require_once 'lib/swift_required.php';
// Create the Transport
$transport = Swift_SmtpTransport::newInstance('smtp.example.org', 25)
->setUsername('your username')
->setPassword('your password')
;
/*
You could alternatively use a different transport such as Sendmail or Mail:
// Sendmail
$transport = Swift_SendmailTransport::newInstance('/usr/sbin/sendmail -bs');
// Mail
$transport = Swift_MailTransport::newInstance();
*/
// Create the Mailer using your created Transport
$mailer = Swift_Mailer::newInstance($transport);
// Create a message
$message = Swift_Message::newInstance('Wonderful Subject')
->setFrom(array('john@doe.com' => 'John Doe'))
->setTo(array('receiver@domain.org', 'other@domain.org' => 'A name'))
->setBody('Here is the message itself')
;
// Send the message
$result = $mailer->send($message);