Create and pop up a new email using data from spreadsheet - google-apps-script

Question

I have spreadsheet in `Google-drive' that contains information like below:
I need to add a button to each row (suppose that we have more data) and If I click it will pop up an html with a new email that contains info from that spreadsheet and that specific row.
Currently, I've created the following gs file in Apps Script the following script that creates a draft email. However, I want to create and view the new email in order to add more info to the message and then send it.
/**
* Sends emails with data from the current spreadsheet.
*/
function sendEmails() {
var sheet = SpreadsheetApp.getActiveSheet();
var startRow = 2; // First row of data to process
var numRows = 1; // Number of rows to process
// Fetch the range of cells A2:B3
var dataRange = sheet.getRange(startRow, 1, numRows, 9);
// Fetch values for each row in the Range.
var data = dataRange.getValues();
for (var i in data) {
var row = data[i];
var emailAddress = row[7]; // First column
var message = row[8]; // Second column
var subject = row[1]+" " + row[6]+ " " + row[1];//'Sending emails from a Spreadsheet';
GmailApp.createDraft(emailAddress, subject, message);
}
}

Answer 1

I found a solution thanks to this solution.
I edited my gs file in Apps Script to have the following script:
/**
* Sends emails with data from the current spreadsheet.
*/
function sendEmails() {
var sheet = SpreadsheetApp.getActiveSheet();
var row = sheet.getActiveCell().getRow();
var column = 1;//= sheet.getActiveCell().getColumn();
var dataRange = sheet.getRange(row, 1, column, 10);
var data = dataRange.getValues();
var row = data[0];//[i];
var emailAddress = row[7]; // First column
var message = row[8]; // Second column
var subject = row[1]+" " + row[6]+ " " + row[2];//'Sending emails from a Spreadsheet';
GmailApp.createDraft(emailAddress, subject, message);
}
function onOpen(e) {
SpreadsheetApp.getUi()
.createMenu("Send email")
.addItem('Generate Draft Email', 'sendEmails')
.addToUi();
}
Now, in my menu in my spreadsheet I have Send Email tab like below:
When I go to a selected row, I click the submenu Generate Draft Email from Send Email and a new email is generated in my Gmail draft emails.