$to="user@server.com";
  $subject="Mail Topic";
  $message="The mail contents.... blah blah blah...";
  $headers ="From: Sender Name <sender@email.address>";
  $headers.="Return-path: email-address@receivingthe.reply";
  $headers.="CC: another@email.tosendto";
  
  mail($to,$subject,$message,$headers);  $to="user@server.com";
  $subject="Mail Topic";
  $message="The mail contents.... blah blah blah...";
  $headers ="From: Sender Name <sender@email.address>\r\n";
  $headers.="Return-path: email-address@receivingthe.reply\r\n";
  $headers.="CC: another@email.tosendto";
  
  mail($to,$subject,$message,$headers);