Google Apps Script: given a regular email (e.g. backup results), archive old copies

code.js

// Configuration data
// Each config should have the following keys:
//  * age_min: maps to 'older_than:' in gmail query terms
//  * age_max: maps to 'newer_than:' in gmail query terms
//  * query: freeform gmail query terms to match against
//
// The age_min/age_max values don't need to exist, given the freeform query value, 
// but age_min forces you to think about how frequent the emails are, and age_max 
// forces you to not search for every single email tha matches the query
//
// TODO:
//  * Add a per-config flag that skips the archiving if there's only one matching thread (so the most recent matching email always stays in Inbox)
var configs = [
  { age_min:"14d", age_max:"90d", query:"subject:(Benedict's Newsletter)" },
  { age_min:"7d",  age_max:"30d", query:"from:hello@visualping.io subject:gnubert" },
  { age_min:"1d",  age_max:"7d",  query:"subject:(Nightly clone to Thunderbay4 Successfully)" },
  { age_min:"1d",  age_max:"7d",  query:"from:Amazon subject:(Arriving today)" }
  ];

function processInbox() {
  for (var config_key in configs) {
    var config = configs[config_key];
    Logger.log("Processing query: " + config["query"]);

    var threads = GmailApp.search("in:inbox " + config["query"] + " newer_than:" + config["age_max"] + " older_than:" + config["age_min"]);
    for (var thread_key in threads) {
      var thread = threads[thread_key];
      Logger.log("  Archiving: " + thread.getFirstMessageSubject());
      
      thread.markRead();
      thread.moveToArchive();
    }
  }
}