Make sure you do not have any newline characters in the to or subject, or the mail may not be sent properly.
1\n"; / / Message urgent! $headers .= "Return-Path: birthday@php.net \n"; / / Re-chemin de retour pour les erreurs $headers .= "Content-Type: text / html; charset=iso-8859-1\n "/ / Type MIME $headers .= "Cc:birthdayarchive@php.net\n"; / / Champs CC $headers .= "Bcc:birthdaycheck@php.net, birthdaygifts@php.net"; / / Champs BCCs / * et hop, à la poste * / mail($recipient, $subject, $message, $headers);?