Gmailのスター以外のメールを削除するGAS

gmail削除gs

function myFunction() {
  [...Array(5)].map((_, cnt) => {
      deleteMail(cnt);
  })
}

function deleteMail(cnt) {
  const query = '-is:starred';
  const threads = GmailApp.search(query);

  for (let i = 0; i < threads.length; i++) {
    if (threads[i]) {
      console.log(`${cnt}-${i}`, threads[i].getMessages()[0].getSubject())
      threads[i].moveToTrash();
    }
  }
}