Google apps script to create an sms notification from a email tagged in gmail.

sms2me.gs

// Copyleft (ɔ) Ben Collerson {benc::benc::cc}
// Last modified 2012-10-10 14:17+10

// This code is based on this Google Apps scripting tutorial written by Romain Vialard. 
// https://developers.google.com/apps-script/articles/gmail_filter_sms

// Notes on getting this code to work.. 
//
// In addition to following the steps from the link above the following steps must be done:
//
// 1. I used the label 'sms2me' instead of 'Send text' (I don't like spaces in labels)
// 2. To stop my default calendar getting clogged with fake SMS events I use a different
//    calendar called 'sms2me'
// 3. I also use a label 'sms2me-sent' to archive old messages.

function sms2me() {
  // Get gmail label that triggers SMS
  var trigger_label = GmailApp.getUserLabelByName('sms2me');
  
  // Get all threads tagged with 'sms2me' 
  var threads = trigger_label.getThreads();
  
  // Current time for reference.
  var now = new Date().getTime();
  
  // Special hidden sms calendar, id is available through the calendar site.  
  var calendar = CalendarApp.getCalendarsByName('sms2me')[0];
  
  for(i in threads){
    // Insert text to be sent as SMS into title of a new event.
    var event = calendar.createEvent(
      threads[i].getFirstMessageSubject(),
      new Date(now+60000),
      new Date(now+60000)
    );
    
    // Apparently subsequent updates need to be done to series rather than just the event.
    // Get the series of the event just created.
    var event_series = calendar.getEventSeriesById(event.getId());
    
    // Add the SMS reminder.
    event_series.addSmsReminder(0);
    
    // Put the processed message in the archive.
    threads[i].moveToArchive();
  }
  
  // Remove the trigger label from the threads just processed.
  trigger_label.removeFromThreads(threads);
  
  // Once the SMS is sent, the trigger_label is removed, the thread is archived,
  // label the treads as sent.
  sent_label = GmailApp.getUserLabelByName('sms2me-sent');
  sent_label.addToThreads(threads);
}