Google script to analyze SaaS cancellation emails and deliver a word cloud to the account owner. Install into https://script.google.com

gistfile1.js

// Requires the Word Cloud Lib extension to be installed prior to running:
// https://sites.google.com/site/scriptsexamples/custom-methods/other-libraries/word-cloud-library
function deliverCancellationThemes() {
  var threads = GmailApp.search('subject:User Cancelled', 0, 100);
  var messagesforCancellationThreads = GmailApp.getMessagesForThreads(threads);
  var input = '';
  for(i in messagesforCancellationThreads) {
    for(j in messagesforCancellationThreads[i]) {
      var body = messagesforCancellationThreads[i][j].getPlainBody();
      Logger.log(body);
      input += body;
    }
  }
  var wordCloud = WordCloudLib.getWordCloud(input);
  var me = Session.getActiveUser().getEmail();
  MailApp.sendEmail(me, 'Top themes from last 100 cancellations', '', {htmlBody: wordCloud});
};