$msg = "Hello, what's up
How are you doin.....";
$msg_html = ' '.$msg.'
________________________________________________ \r\n
Testing sending email (TEXT)';
$headers = "From: Someone <some@xxx.com>\r\n";
$headers .= "Content-type: text; ";
mail($email, $subject, $msg_html, $headers);
then i received this kind of email :
Hello, what's up How are you doin.....________________________________________________ \r\n Testing sending email (TEXT)
All together in one line..