Remove script for Gmail that delets all email threads/messages that match search for when Gmail can't do it itself

README.md

Remove script for Gmail

function Intialize() {
  return;
}

function Install() {
  ScriptApp.newTrigger("purgeGmail")
           .timeBased().everyMinutes(10).create();

}

function Uninstall() {
  
  var triggers = ScriptApp.getScriptTriggers();
  for (var i=0; i<triggers.length; i++) {
    ScriptApp.deleteTrigger(triggers[i]);
  }
  
}

function purgeGmail() {
  var search = "to:log@docpad.org";
  
  var threads = GmailApp.search(search, 0, 100);
  
  for (var i=0; i<threads.length; i++) {
    var thread = threads[i];
    thread.moveToTrash();
  }
}

1. Go to https://script.google.com and create a new script
2. Copy the above to the script input
3. Click the save icon
4. Click the "Run" menu
5. Click the "Install" submenu entry
6. Wait a few days, it will delete 100 messages each 10 minutes

You can select up to 500 at a time.

This is the same, but as an infinite loop.

function purgeGmail() {
  Logger.log("Beginning removal...");
  var search = "label:web-app-suspicious";
  
  length = 1;
  
  while(length > 0) { 
    var threads = GmailApp.search(search, 0, 500);
    
    var c = 0;
    for (var i=0; i<threads.length; i++) {
      var thread = threads[i];
      thread.moveToTrash();
      c++;
    }
    
    Logger.log("Deleted a batch of " + c + " messages.");
    length = threads.length;
  }
}

If i want to delete all messages which are from "abc@mail.com" then how do we achieve with this script? Please advise.

If i want to delete all messages which are from "abc@mail.com" then how do we achieve with this script? Please advise.

just change the search partition:
var search = "to:log@docpad.org";
to
var search = "from:log@docpad.org";

There is an API to remove all threads to trash. but at most 100 thread.
GmailApp.moveThreadsToTrash(threads)

I wanted a script to remove emails that are older than a certain time. I get notifications from Jira and other services which I want to receive but I don't want to keep them. I've modified the function to allow an array of search terms. I didn't see anything in the documentation about moveThreadsToTrash only supporting 100 messages at a time but I could be wrong. The docs say the call will fail if there are "too many threads." When you run the script it comes back with an error stating there is a max of 100 threads.

function purgeGmail() {
  // Array of search queries
  const queries = ["from:example1@example.com older_than:2d","from:example2@test.com older_than:7d"];
  
  for (let i=0; i<queries.length; i++) {
    GmailApp.moveThreadsToTrash(GmailApp.search(queries[i]));
  }
}

hi, can you help me
when i ran this script ,timeout happened
return the error Exceeded maximum execution time

After I run the "install" and wait for above 10 mins, it seems nothing happen. The purgeGmail() had not been called yet.

Thank you for this script. Is there a way to delete messages based on the subject? Unfortunately, in my situation, we have an all-employee group and I don't want it to find all emails to that group and delete them. Thank you.