How can i copy google spreadsheet to gmail using script? - email

Question

Hi I'm trying to copy certain range of cells from google sheet to gmail using script. But it is not working especially the format is changing. How can I copy like 'ctrl+c->ctrl+v' using script? here is my code
function myFunction() {
var sheet = SpreadsheetApp.getActiveSpreadsheet(); //access to the spreadsheet
SpreadsheetApp.setActiveSheet(sheet.getSheetByName('MAIL')); //access to the sheet by name
var range = sheet.getRange('C7:I23'); //assign the range you want to copy
var copy = range.getValues();
var sh = SpreadsheetApp.getActiveSpreadsheet();
SpreadsheetApp.setActiveSheet(sh.getSheetByName('MAIL'));
var data = sh.getRange("C7:I23").getValues();
var htmltable =[];
//var TABLEFORMAT-> // i want this format just like i made on spread sheet
//var htmltable = '<table ' +TABLEFORMAT+' ">';
for (row = 0; row<data.length; row++){
htmltable += '<tr>';
for (col = 0 ;col<data[row].length; col++){
if (data[row][col] === "" || 0) {
htmltable += '<td>' + ' ' +'</td>';
}
else if (row === 0) {
htmltable += '<th>' + data[row][col] + '</th>';
}
else {
htmltable += '<td>' + data[row][col] + '</td>';
}
}
htmltable += '</tr>';
}
htmltable += '</table>';
Logger.log(data);
Logger.log(htmltable);
var email_subject = "";
var my_email = "mail";
MailApp.sendEmail({
to: my_email,
subject: email_subject,
htmlBody: htmltable,
})}