php邮件功能来自åäö的地址？

Question

你可以通过php发送一封来自ÅÄÖ的电子邮件的邮件吗？

像这样：

$to = "$email";
$subject = "Test mail";
$message = "Test";
$from = "info@testwithÅÄÖ.se";
$headers = "From: $from";
mail($to,$subject,$message,$headers);
echo "Mail Sent.";