<?php
mb_language("japanese");
mb_internal_encoding("UTF-8");

require("class.phpmailer.php");
$mailer = new PHPMailer();
$mailer->IsSMTP();
$mailer->Host = 'ssl://smtp.gmail.com:465';
$mailer->SMTPAuth = TRUE;
$mailer->Username = 'user@gmail.com';  // Gmailのアカウント名
$mailer->Password = 'gmail_password';  // Gmailのパスワード
$mailer->From     = 'from@gmail.com';  // Fromのメールアドレス
$mailer->FromName = mb_encode_mimeheader(mb_convert_encoding("Fromの名前","JIS","UTF-8"));
$mailer->Subject  = mb_encode_mimeheader(mb_convert_encoding("メールのタイトル","JIS","UTF-8"));
$mailer->Body     = mb_convert_encoding("メールの内容","JIS","UTF-8");
$mailer->AddAddress('friend@example.com'); // 宛先
// $mailer->AddReplyTo($email, $from);

if(!$mailer->Send()) {
   echo "Message was not sent<br/ >";
   echo "Mailer Error: " . $mailer->ErrorInfo;
} else {
   echo "Message has been sent";
}
?>