I could actualize by customizing this plugin. I hope that it will be embed to this plugin .. (^^; [Summary] For directly opening Microsoft Excel in Japanese, the Shift-JIS encoding must be used. However, Japanese encoding has very difficult issue because it is not single one. * For example: 1. Shift-JIS is the standard encoding for Japanese Applications. 2. EUC-JP is for older UNIX system. 3. ISO-2022-JP (JIS) is the standard encoding for Japanese E-mail message. 4. UTF-8 is the current popular encoding for latest devices or systems, such as Gmail, SmartPhone, and so on. Moreover, Shift-JIS includes special characters for Japanese. Then, UTF-8 only supports some characters among them because the capacity of UTF-8 is not enough. By coping with Japanese Microsoft Excel, 2 steps are needed. 1. Fixed Shift-JIS encoding characters to UTF-8 because they may slip into DB. 2. Convert UTF-8 to Shift-JIS supported Windows OS using mb_convert_encoding() function. * mb_convert_encoding is included mb_string module(http://php.net/manual/en/book.mbstring.php). [Operation] 1. Copy "ExportToCsvUTF8.php" file to "ExportToCsvShiftJIS.php" * ExportToCsvShiftJIS.php (1) Original class ExportToCsvUTF8 extends ExportBase implements CFDBExport { (1) Changed class ExportToCsvShiftJIS extends ExportBase implements CFDBExport { (2) Original public function setUseBom($use) { $this->useBom = $use; } (2) Added public function setUseBom($use) { $this->useBom = $use; } // Convert Shift-JIS (Standard Encoding for Japanese Applications) to UTF-8. public function japanese_convert_utf8_to_sjis ($str){ $utf_escape_patterns_revert =array( // The code number of Japanese two-byte character "ー" is separated by Japanese encoding types. '/\xE2\x80\x93/' => "\xE2\x88\x92", ); $str =preg_replace( array_keys($utf_escape_patterns_revert), array_values($utf_escape_patterns_revert), $str); return $str; } (3) Original // Security Check if (!$this->isAuthorized()) { $this->assertSecurityErrorMessage(); return; } (3) Added // Security Check if (!$this->isAuthorized()) { $this->assertSecurityErrorMessage(); return; } // If mb_convert_encoding function is not enabled (mb_string module is not installed), the converting is finished. if (!function_exists('mb_convert_encoding')){ return; } (4) Original $this->echoHeaders( array('Content-Type: text/csv; charset=UTF-8', "Content-Disposition: attachment; filename=\"$formName.csv\"")); (4) Changed $this->echoHeaders( array('Content-Type: text/csv; charset=Shift_JIS', "Content-Disposition: attachment; filename=\"$formName.csv\"")); (5) Original printf('"%s",', str_replace('"', '""', $cell)); (5) Changed printf('"%s",', str_replace('"', '""', mb_convert_encoding($this->japanese_convert_utf8_to_sjis($cell),"SJIS-win","utf-8"))); *CF7DBPluginExporter.php (6) Original switch ($encoding) { ...... ...... ...... case 'CSVUTF8': default: require_once('ExportToCsvUtf8.php'); $exporter = new ExportToCsvUtf8(); $exporter->setUseBom(false); $exporter->export($formName, $options); break; } (6) Added switch ($encoding) { ...... ...... ...... case 'CSVSJIS': require_once('ExportToCsvShiftJIS.php'); $exporter = new ExportToCsvShiftJIS(); $exporter->export($formName, $options); break; case 'CSVUTF8': default: require_once('ExportToCsvUtf8.php'); $exporter = new ExportToCsvUtf8(); $exporter->setUseBom(false); $exporter->export($formName, $options); break; } * CFDBViewShortCodeBuilder.php (7) Original (7) Addded *CFDBViewWhatsInDB.php (8) Original (8) Added [Other Custom] For using normal characters in "Filter". (admin-ajax.php?......&filter=e-mail=example@example.com) * CFDBFormIterator.php (1) Original foreach ($this->dataIterator->displayColumns as $aCol) { $row[$aCol] = $this->dataIterator->row[$aCol]; (2) Added foreach ($this->dataIterator->displayColumns as $aCol) { $row[$aCol] = $this->dataIterator->row[$aCol]; if ($aCol == 'filter'){ $row[$aCol] = urldecode($row[$aCol]); $row[$aCol] = urlencode($row[$aCol]); }