A simple, kludgey bellend blocker Google Apps Script for Gmail (trash or completely delete emails by label).

Bellend Blocker v2.gs

//A simple, kludgey bellend blocker, for Google Apps Script. Use in conjunction with Gmail email filters.
//Loosely based on work by boly38: https://stackoverflow.com/questions/36377391/script-to-permenantly-delete-my-emails-with-google-script
//No rights reserved.

function bellendBlocker() {
  Logger.log ('Starting Bellend Blocker...')
  //Basic settings: which email address, what label, what to do with matching emails
  var mymail = [PUT YOUR EMAIL ADDRESS HERE];
  var mylabel = [PUT YOUR EMAIL LABEL HERE];
  var purgeNotDelete = [TRUE OR FALSE];
  
  //Generate an array of matching emails and associated variables
  var messagesList = Gmail.Users.Messages.list(mymail, {
      q: 'label:' + mylabel,
    });
  //See what the messages list looks like
  //Logger.log(messagesList);
  
  //If there are matching emails...
  if (messagesList.resultSizeEstimate != 0) {
    //Generate variables
    var totalMessages = messagesList.messages.length;
    Logger.log('Total messages: %s', totalMessages);
    var currentEmail;
  
    //The actual message-deleting bit
    Logger.log ('Permanently deleting: %s', purgeNotDelete)
    for (messagesDeleted = 0; messagesDeleted < totalMessages; messagesDeleted++) {
      var currentEmail = messagesList.messages[messagesDeleted].id;
      Logger.log ('Processing: Email ID %s', currentEmail)
      if (purgeNotDelete) {
        Gmail.Users.Messages.remove(mymail, currentEmail);
        Logger.log('Purged: Email ID %s', currentEmail);
      } else {
        Gmail.Users.Messages.trash(mymail, currentEmail);
        Logger.log('Moved to trash: Email ID %s', currentEmail)
      }
    Logger.log ('Processed: %s messages', (messagesDeleted + 1));
    }
    Logger.log ('All done!');
    return;
  } else {
    //If there are no matching emails
    Logger.log ('Nothing yet; done for now.');
    return;
  }
}