$smtp->datasend("Content-type: multipart/mixed;\n\tboundary=\"$boundary\"\n");
$smtp->datasend("\n");

$smtp->datasend("--$boundary\n");

$smtp->datasend("Content-type: text/plain; charset=\"UTF-8\"\n");
$smtp->datasend("Content-Disposition: quoted-printable\n");
$smtp->datasend("\n");