Auto Archive Email

emailArchiver.js

// Auto-archive email older than X days (so long as not starred)
// Inspirations:
// - https://gist.github.com/anonymous/2cca33d376f7f924fdaa67891ad098cc
// - https://medium.com/@fw3d/auto-archive-emails-in-gmail-after-2-days-1ebf0e076b1c


// NOTE: Must have autoarchive and ttl1 labels already created to use.

var MAX_AGE_DAYS = 14;
var BEFORE_DATE = new Date();
BEFORE_DATE.setDate(BEFORE_DATE.getDate() - MAX_AGE_DAYS); // what was the date at that time?
var LABEL_NAME = 'autoarchive';

var TTL_LABELS = [
  {
    label: 'ttl1', 
    days: 1,
  }
];

function main() {
  autoArchive();
  autoArchiveTTL();
}

function autoArchive() {
  var autoArchiveLabel = GmailApp.getUserLabelByName('autoarchive');
  // TODO: enhance with date filter already, e.g. before:
  var dateString = BEFORE_DATE.toISOString().slice(0, 10); // eg. 2019-02-23
  var threads = GmailApp.search("in:inbox -is:starred before:" + dateString);
  
  // Archive all unstarred emails before the BEFORE_DATE
  // Start in reverse, process them faster.
  for (var i = (threads.length - 1); i >= 0; i--) {
    var t = threads[i];
    // sanity checks
    if (t.getLastMessageDate() < BEFORE_DATE && !t.hasStarredMessages()) {
      performArchive(t, autoArchiveLabel);
    }
  }
}

function autoArchiveTTL() {
  for (i = 0; i < TTL_LABELS.length; i++) {
    var ttl = TTL_LABELS[i];
    var beforeDate = new Date();
    beforeDate.setDate(beforeDate.getDate() - ttl.days);
    
    var autoArchiveLabel = GmailApp.getUserLabelByName('autoarchive');
    var label = GmailApp.getUserLabelByName(ttl.label);
    var threads = GmailApp.search("in:inbox -is:starred label:" + ttl.label)
    for (var i = 0; i < threads.length; i++) {
      var t = threads[i];
      if (t.getLastMessageDate() < beforeDate && !t.hasStarredMessages()) {
        performArchive(t, autoArchiveLabel);
      }
    }
  }
}

function performArchive(thread, label) {
  thread.addLabel(label);
  thread.moveToArchive();
}