E-mail alert on entering data to Google Spreadsheet not working - email

Question

I need the code that will send e-mail to some Google mail account whenever some data is entered to Google spreadsheet. I also need that data to be presented in e-mail, if possible.
I have found the answer for my question here How to put a username to the cell , who made the last modification of the row?
But this code for some reason do not work for me.
1 I open Google Spreadsheet script editor and paste that code
2 I change e-mail addresses to appropriate ones
3 I am asked for authorization
4 Then when I enter some data in Google spreadsheet I have display
notification but no e-mail
Actually sometimes I received e-mail, but not always and I do not understand why it was working before, because I didn't change anything.
I tried to create new spreadsheet with a new code but there e-mail notifications are still not working.
I checked postini e-mail firewall and it's clear - no messages there and Spam folder is also clear.
There is absolutely no simple tutorials on the Web on how to send e-mail on data entering to Google spreadsheet, except the question here, which I posted on the beginning.
Here is the code that I used:
function onEdit(event){
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sh = event.source.getActiveSheet();
var r = event.source.getActiveRange();
r.setComment("Last modified: " + (new Date())+' by '+Session.getActiveUser());
ss.toast('Dernière cellule modifiée = '+r.getA1Notation()+' par '+Session.getActiveUser());
}
function alert(){
var ss = SpreadsheetApp.getActiveSpreadsheet();
var cell = ss.getActiveCell().getA1Notation()
if(Session.getActiveUser()!='me#mymail.com'){
MailApp.sendEmail('me#mymail.com', 'Modification dans le planning', 'la case '+cell+' du document a été modifiée par '+Session.getActiveUser());
}
}
Thank you for your time and answers.
EDIT
After some more investigation I wrote this code. It send e-mail, but for some reason there is no user.id in e-mail, only cell.id.
function sendSimpleTextEmail() {
var ss = SpreadsheetApp.getActiveSpreadsheet();
var cell = ss.getActiveCell().getA1Notation();
var user = Session.getActiveUser();
MailApp.sendEmail('me#mymail.com',user,cell);
}

Answer 1

I finally managed to make it working
The code is:
function sendSimpleTextEmail() {
var ss = SpreadsheetApp.getActiveSpreadsheet();
Logger.log(ss);
var name = ss.getName();
Logger.log(name);
var url = ss.getUrl();
Logger.log(url);
var cell = ss.getActiveCell().getA1Notation();
Logger.log(cell);
var result = ss.getActiveCell().getValue();
Logger.log(result);
var email = Session.getActiveUser().getEmail();
Logger.log(email);
MailApp.sendEmail('my#mymail.com','Data was changed in a spreadsheet `' +name+ '` in a cell ' +cell+ ' by user ' +email+ ' New Data=`' +result+ '`','Data was changed in a spreadsheet `' +name+ '` in a cell ' +cell+ ' by user ' +email+ ' New Data=`' +result+ '` Spreadsheet URL is ' +url);
}
After creating this script you need to configure manual triggers by pressing Current project's triggers button. You need only On Edit trigger.
Remark1 - difference between On Change and On Edit triggers:
An installable edit trigger runs when a user modifies a value in a spreadsheet.
An installable change trigger runs when a user modifies the structure of a spreadsheet itself — for example, by adding a new sheet or removing a column. More info https://developers.google.com/apps-script/guides/triggers/installable
Remark2 - Session.getActiveUser().getEmail() works only inside GoogleApps domain. If I share spreadsheet with anybody outside of the domain - it will return empty string.
EDIT: typos

Answer 2

I'm not that well versed in Javascript, but just covering the obvious.
When you are testing your script, are you using an account OTHER than the one you've entered in the script in the changes?
I'm assuming you've changed me#mymail.com to your email?
if(Session.getActiveUser()!='me#mymail.com')
That part of the code says, If the user logged in ISNT this email, then send the mail judging by the next bit.
So when testing, use an account that isn't me#mymail.com
EDIT
Should have read the origianl posters question more.
So after reading properly the code.
unless I'm really mistaken, you should only have one on edit script ideally.
And the part of the script the OP wants isn't on the on edit trigger, it's just a function. The on edit part of the code simply adds comments to the sheet. So maybe a better answer for OP is to put the alert() function in the onEdit() function
Something like
function onEdit(event){
var ss = SpreadsheetApp.getActiveSpreadsheet();
var cell = ss.getActiveCell().getA1Notation();
if(Session.getActiveUser()!='me#mymail.com'){
MailApp.sendEmail('me#mymail.com', 'Modification dans le planning', 'la case '+cell+' du document a été modifiée par '+Session.getActiveUser());
}
}
This is untested by the way, just hoping to help you get on track