when i add \r\n the images dissapear thats because the cariage return should not be there since
$hdr .= "Content-Disposition:inline;";
$hdr .= "filename=\"$file3\"\r\n\n";
filename is part of the content-disposition and the line break should only follow after that line, in particular interest is that problem only occurs with outlook express and not microsoft outlook.
this is kinda a big problem for the designers and had this problem before and could not find a solution before..
any more help would be great
also tried to take out the extra \n -> this also does nothing.