How can the mail header be customized to prevent unwanted information from being included when sending mail with postfix in PHP?

To customize the mail header in PHP when sending mail with postfix, you can use the `mail()` function along with the `additional_headers` parameter to specify the headers you want to include. To prevent unwanted information from being included, you can set custom headers such as `From`, `Reply-To`, and `Content-Type`. By setting these headers explicitly, you can control what information is included in the email header. 

$to = 'recipient@example.com';
$subject = 'Test Email';
$message = 'This is a test email.';
$headers = 'From: Your Name <yourname@example.com>' . "\r\n";
$headers .= 'Reply-To: yourname@example.com' . "\r\n";
$headers .= 'Content-Type: text/html; charset=ISO-8859-1' . "\r\n";

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

Keywords

PHP mail header customization postfix unwanted information

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