PHPでメール送信を行う

php 
mb_language("Japanese"); 
mb_internal_encoding("UTF-8");

$to = "送る先@email.com";
$subject = "題名";
$body = "本文";
$header = "From:送り元@mail.com";

mb_send_mail($to, $subject, $body, $header);

ネタ元