google get all attachments

saveAttachmentsFromSender.gs

function saveAttachmentsFromSender() {
  const SENDER = "******";
  const FOLDER_ID = "*******";
  const folder = DriveApp.getFolderById(FOLDER_ID);

  const threads = GmailApp.search(`from:${SENDER} has:attachment`);
  let savedCount = 0;

  threads.forEach(thread => {
    const messages = thread.getMessages();

    messages.forEach(msg => {
      const attachments = msg.getAttachments();

      attachments.forEach(att => {
        const name = att.getName();

        // Avoid duplicates
        const existing = folder.getFilesByName(name);
        if (existing.hasNext()) {
          Logger.log(`Skipping duplicate: ${name}`);
          return;
        }

        folder.createFile(att);
        savedCount++;
        Logger.log(`Saved: ${name}`);
      });
    });
  });

  Logger.log(`Done. Total attachments saved: ${savedCount}`);
}