How can the charset and encoding be properly set in the header of a PHP email to ensure correct display of special characters like umlauts?

Special characters like umlauts can be displayed correctly in PHP emails by setting the charset and encoding properly in the email header. This can be achieved by using the `Content-Type` header with the charset specified as `UTF-8`. Additionally, the `Content-Transfer-Encoding` header should be set to `quoted-printable` to ensure proper encoding of special characters. 

<?php
$to = "recipient@example.com";
$subject = "Subject with Umlauts: äöü";
$message = "Message with Umlauts: äöü";

$headers = "MIME-Version: 1.0" . "\r\n";
$headers .= "Content-type: text/html; charset=UTF-8" . "\r\n";
$headers .= "Content-Transfer-Encoding: quoted-printable" . "\r\n";

mail($to, $subject, $message, $headers);
?>

Keywords

charset encoding header PHP email special characters

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