A simple YES in a cell in column A triggers EMAIL - google-apps-script

Question

I've searched through the forums and the answer is most likely out there but I need some assistance.
If the letter "Y" is input in column A, I need an automatic email triggered to a predetermined list of people. Ideally, this email would include an automatically generated email body according to the row data (Item, vendor, total, job, etc.).
This is what I have written so far. It sends an email out every time I make a change. I have tried, unsuccessfully, to refine the project's triggers and the if (Index of) bit.
function sendNotification() {
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheet = ss.getActiveSheet();
var cell = ss.getActiveCell().getA1Notation();
var row = sheet.getActiveRange().getRow();
var cellvalue = ss.getActiveCell().getValue().toString();
var recipients = "me#gmail.com";
var message = '';
if(cell.indexOf('A')!="Y"){
message = sheet.getRange('D'+ sheet.getActiveCell().getRowIndex()).getValue()
}
var subject = 'Update to '+sheet.getName();
var body = sheet.getName() + ' has been updated. Visit ' + ss.getUrl() + ' to view the changes on row: «' + row + '». New comment: «' + cellvalue + '». For message: «' + message + '»';
MailApp.sendEmail(recipients, subject, body);
};

Answer 1

You're almost there!
In your if statment:
if(cell.indexOf('A')!="Y"){
You need to evaluate two things, first if the user is editing the column A and second if the value of the cell is "Y".
For the first one, you already have the value of the current cell in cellvalue, so just evaluate if cellvalue == "Y".
For the second one, you need to evaluate if the user is editing the column A, you can use .getColumnIndex()this will get the index of the range, in this case the cell, column A will return 1, so you evaluate sheet.getActiveCell().getColumnIndex() == 1
Now, you just need to use the logical operator && to check if both expressions evaluate to true.
Your line should look like this:
if(cellvalue == "Y" && sheet.getActiveCell().getColumnIndex() == 1){
Finally to make sure the email is sent only if the line above evaluates to true, move the subject, body and MailAppinside the if statement:
function sendNotification() {
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheet = ss.getActiveSheet();
var cell = ss.getActiveCell().getA1Notation();
var row = sheet.getActiveRange().getRow();
var cellvalue = ss.getActiveCell().getValue().toString();
var recipients = "me#gmail.com";
var message = '';
if(cellvalue == "Y" && sheet.getActiveCell().getColumnIndex() == 1){
message = sheet.getRange('D'+ sheet.getActiveCell().getRowIndex()).getValue();
var subject = 'Update to '+sheet.getName();
var body = sheet.getName() + ' has been updated. Visit ' + ss.getUrl() + ' to view the changes on row: «' + row + '». New comment: «' + cellvalue + '». For message: «' + message + '»';
MailApp.sendEmail(recipients, subject, body);
}
};