Logging Google mail in Google sheet, Google Apps Script - google-apps-script

Question

HELP! I’m using a script I basically cribbed from Tom Woodward at Bionice Teaching to record email messages in a spreadsheet.
http://bionicteaching.com/auto-logging-email-via-google-script/
I need to add a column that collects any labels that have been attached to the messages. I need to get this done for my work, but I'm brand new to Google Apps Script and really need someone to hold my hand... Essentially doing it for me, then teaching me what it was you did. I really appreciate any help you can give me in any case. Thanks
Here is what I’m using:
function myFunction() {
//this is just the stuff that recognizes what spreadsheet you're in
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheets = ss.getSheets();
var sheet = ss.getSheetByName("data"); //gets the right sheet
//this chunk gets the date info
var today = new Date();
var dd = today.getDate()-1;
var mm = today.getMonth()+1; //January is 0 DO NOT FORGET THIS
var yyyy = today.getFullYear();
var yesterday = yyyy + '/' + mm + '/' + dd;
//****************************************************
//searches your GMail for emails written after yesterday
var query = "after:" + yesterday;
var threads = GmailApp.search(query);
Logger.log('threads len ' + threads.length);
Logger.log(query);
for (var i = 0; i < threads.length; i++) {
var messages = threads[i].getMessages();
Logger.log(messages);
for (var m = 0; m < messages.length; m++) {
var supportStats = [];
//here's where you decide what parts of the email you want
var from = messages[m].getFrom(); //from field
Logger.log(from);
var time = messages[m].getDate();//date field
Logger.log(time);
var subject = messages[m].getSubject();//subject field
Logger.log(subject);
var body = messages[m].getPlainBody();//body field
Logger.log(body);
var mId = messages[m].getId();//id field to create the link later
var mYear = time.getFullYear();
var mMonth = time.getMonth()+1;
var mDay = time.getDate();
var messageDate = mYear + '/' + mMonth + '/' + mDay;
Logger.log('msg date ' + messageDate);
//decides what found emails match yesterday's date and push them to an array to write to the spreadsheet
if (messageDate === yesterday) {
supportStats.push(from);
supportStats.push(time);
supportStats.push(subject);
supportStats.push(body);
supportStats.push('https://mail.google.com/mail/u/0/#inbox/'+mId); //build the URL to the email
SpreadsheetApp.getActiveSheet().appendRow(supportStats); //writes to the spreadsheet
}
}
}
}
Here is the results I'm getting... Perfect!
Except I'd like one more column that adds the labels that are on each message. How do I do that?
spreatsheet results of Google Apps script mail->sheet

Answer 1

You can use this:
var labels = threads[i].getLabels();
GmailThread::getLabels()
GmailThread has labels, not GmailMessage. It returns an array of labels. Maybe use:
var labelsString = "";
var labelArray = []
for each (var label in labels)
{
labelArray.push(label.getName());
}
if (labelArray.length > 0)
{
labelsString = labelArray.join(',');
}
to insert into the row of the spreadsheet.
GmailLabel::getName()