$from = 'anothermail@gmail.com';
$subject = 'test';
$message = 'body';
$message = wordwrap($message, 70);
// send mail
if (mail("my-mail@gmail.com",$subject,$message,"From: $fromn")){
echo "It works";
}
else{

echo "Fail";
}

$from = 'anothermail@gmail.com';
$subject = 'test';
$message = 'body';
$message = wordwrap($message, 70);
// send mail
if (mail("my-mail@gmail.com",$subject,$message,"From: ".$form."n")){
echo "It works";
}
else{

echo "Fail";
}