Japanese (multi-byte) characters & email library

[eluser]Unknown[/eluser]
[quote author="座頭市" date="1186673766"]
$this->email->subject(iconv('utf-8', 'iso-2022-jp', $subject));
$this->email->message(iconv('utf-8', 'iso-2022-jp', $message));
[/code]
[/quote]

I think the problem is that iconv is including 'Subject:', so it's included for a second time when sending the email. I used str_replace to remove inconv's 'Subject:' and it worked fine.