Mime_Mail -> a bug or a normal behavior ?

I do not send this message in the pear users mailing list, because, while asking questions i'm making suggestions. I tried to use the Mail_Mime and Mail packages for a emailing application. What this app does : send a mail to each contact in the mailinglist, and each mail is different (headers and body) from the others. Here is a good demo of how it works : <?php $mail_sender = &Mail::factory ( $mail_backend, $mail_backend_params); $mail_mime = new Mail_Mime(); $mail_mime->setFrom( $from ); foreach ( $contacts as $contact_key=>$contact_desc ) { $mail_mime->setTxtBody ( $contact_desc['txtbody'] ); $mail_mime->setHTMLBody ( $contact_desc['htmlbody'] ); $mail_body = $mail_mime->get(); $mail_headers = array ( "To" => $contact_desc['mail'], "Subject" => $contact_desc['subject'] ); $mail_headers = $mail_mime->headers ( $mail_headers ); $mail_sender->send ( $contact_desc['mail'], $mail_headers, $mail_body); } ?> The problem was that the headers were identical for all the sends (the first set of headers was used for all next sends), certainly because of the array_merge direction in "headers" method. After looking in the Mime_Mail sources, i've found the "setFrom", "setSubject", "addCc", "addBcc" methods, which do not appear in the documentation. So i decided to use some of them instead of the "headers" method. And as there's no "setTo" method, i just created one. Was it a good idea, or is there better practices ? If it was, should not this new method appear in the official release ? And, what about the headers method and its behavior, and about the lack of documentation ? Sorry, if i'm not very comprehensible (i'm better in french), and if this message is a bit out of topic. Thanks for answers. Anthony.