src/Debug/Utilities.php
public static function unserializeLog($str)
    {
        $strStart = 'START DEBUG';
        $strEnd = 'END DEBUG';
        if (\preg_match('/'.$strStart.'[\r\n]+(.+)[\r\n]+'.$strEnd.'/s', $str, $matches)) {
            $str = $matches[1];
        }
        $str = self::isBase64Encoded($str)
            ? \base64_decode($str)
            : false;
        if ($str && \function_exists('gzinflate')) {
            $strInflated = \gzinflate($str);
            if ($strInflated) {
                $str = $strInflated;
            }
        }
        $data = \unserialize($str);
        return $data;
    }
public static function unserializeLog($str)
    {
        $strStart = 'START DEBUG';
        $strEnd = 'END DEBUG';
        if (\preg_match('/'.$strStart.'[\r\n]+(.+)[\r\n]+'.$strEnd.'/s', $str, $matches)) {
            $str = $matches[1];
        }
        $str = self::isBase64Encoded($str)
            ? \base64_decode($str)
            : false;
        if ($str && \function_exists('gzinflate')) {
            $strInflated = \gzinflate($str);
            if ($strInflated) {
                $str = $strInflated;
            }
        }
        $data = \unserialize($str);
        return $data;
    }
Use to unserialize the log serialized by emailLog

@param string $str serialized log data

@return array | false