check OK変換後文字:
MIME-Version: 1.0 Content-Type: multipart/alternative;boundary=2c1761feebacee9545f90e60600f02bc; charset=Shift_JIS From: Reply-To: --2c1761feebacee9545f90e60600f02bc Content-type: text/plain;charset=Shift_JIS --2c1761feebacee9545f90e60600f02bc Content-type: text/html;charset=Shift_JIS --2c1761feebacee9545f90e60600f02bc--send to : NG