hvis du har alle email adresser i et array, kunne du gøre sådan her:
function CodebaseHtmlMail($email,$bcc) {
    $subject = \"NEW HTML E-MAIL\";
    $message = \"<HTML>\\n\";
    $message .= \"<HEAD>\\n\";
    $message .= \"<TITLE>NEW HTML E-MAIL</TITLE>\\n\";
    $message .= \"</HEAD>\\n\";
    $message .= \"<BODY bgcolor=\\\"#FFFFFF\\\" text=\\\"#DDDDDD\\\" LINK=\\\"#DDDDDD\\\" ALINK=\\\"#DDDDDD\\\" VLINK=\\\"#DDDDDD\\\">\\n\";
    $message .= \"<br>\\n\";
    $message .= \"<center>\\n\";
    $message .= \"<font color=#000000 face=arial size=2>NEW HTML E-MAIL, powered by <a href=\\\"
http://www.codebase.dk/\\\">codebase.</a><br><br>best regards<br>
www.eksperten.dk</font>\\n\";    $message .= \"</center>\\n\";
    $message .= \"</BODY>\\n\";
    $message .= \"</HTML>\\n\";
    $headers = \"From: \'HTML MAIL FORM\' <janus@codebase.dk>\\n\";
    $headers .= \"X-Sender: <janus@codebase.dk>\\n\";
    $headers .= \"X-Mailer: PHP\\n\"; 
    $headers .= \"Return-Path: <janus@codebase.dk>\\n\";  
    $headers .= \"Content-Type: text/html; charset=iso-8859-1\\n\"; 
    $headers .= \"MIME-Version: 1.0\\n\";
    //$headers .= \"cc: janus@codebase.dk\\n\";
    if (ereg(\"@\",$bcc) $headers .= \"bcc: janus@codebase.dk\\n\";
    mail(\"$email\", $subject, $message, $headers);
}
foreach ($modtager AS $email) {
 CodebaseHtmlMail($email,$bcc_dummy);
}
eller brug bcc funktionen, det er jo derfor den findes:
foreach ($modtager AS $email) {
 $bcc.\"$email;\";
}
$bcc = substr($bcc,0,-1);
CodebaseHtmlMail(\"janus@codebase.dk\",$bcc);
_codeb@se.dk
PS: er det ikke dig, som er \'phpbuilderdk\' ? *ss*