How to change eMail Header

[gnomcat]

If a new link is added by admin and the "notify link owner" flag is on, the link owner receive a mail with emty header (subject), where can I change this?

[Bruceper]

All emails are in the /themes/themename/mail/ folder, but those are just the bodies of the emails.

What you want is here in admin/link_add.php

if ($notify_link_owner) {
// send link owner
$body = EvalTemplate($theme_path . "/mail/add_ok.mail", $links_obj->email_template_fields);
$from = $email_address;
@mail($email, $msg["20130"], $body, "From: $from \nX-Mailer: INDEXU_X-Mailer/1.0");
}