Auto Label & Filter Email dengan GmailApp

function labelImportant() {
  const threads = GmailApp.search('is:unread from:boss@company.com');
  const label = GmailApp.getUserLabelByName('Penting') || GmailApp.createLabel('Penting');

  threads.forEach((t) => t.addLabel(label));
}

function removeLabel() {
  const label = GmailApp.getUserLabelByName('Lama');
  if (label) {
    const threads = label.getThreads();
    threads.forEach((t) => t.removeLabel(label));
  }
}

function archivePromo() {
  const label = GmailApp.getUserLabelByName('Promo') || GmailApp.createLabel('Promo');
  const threads = GmailApp.search('category:promotions is:unread');

  threads.forEach((t) => {
    t.addLabel(label);
    t.moveToArchive(); // keluar dari Inbox
  });
}

function labelByDomain() {
  const threads = GmailApp.search('is:unread');
  threads.forEach((t) => {
    const msg = t.getMessages()[0];
    const from = msg.getFrom();
    const domain = from.match(/@([^>]+)/)?.[1] || 'unknown';
    const label = GmailApp.getUserLabelByName(domain) || GmailApp.createLabel(domain);
    t.addLabel(label);
  });
}

function createAutoLabelTrigger() {
  ScriptApp.newTrigger('labelImportant')
    .timeBased()
    .everyMinutes(15)
    .create();
}