Google App Script

app.js

/*

1. Check if there are any new messages with “DMARC Reports” label in my GMail, and
2. if yes, then get the attached file and put it in the “DMARC Reports” folder in my GDrive.
3. Then send me an email with a report about what happened.

*/

// GmailApp: https://developers.google.com/apps-script/reference/gmail/gmail-app
// DriveApp: https://developers.google.com/apps-script/reference/drive/drive-app

const labelName = "DMARC reports";
const folderName = "DMARC reports";

function importReports() {
  const label = GmailApp.getUserLabelByName(labelName);

  if (label.getUnreadCount() === 0) {
    return;
  }

  let report = "";

  const say = (string) => {
    report += `\n${string}`;
    Logger.log(string);
  };

  say(`Found ${label.getUnreadCount()} new messages`);

  const unreadThreads = label.getThreads().filter((t) => t.isUnread());
  const folder = DriveApp.getFoldersByName(folderName).next();

  unreadThreads.forEach((thread) => {
    const attachment = thread.getMessages()[0].getAttachments()[0];
    const file = DriveApp.createFile(attachment.getAllBlobs()[0]);

    folder.addFile(file);
    thread.markRead();

    say(attachment.getName());
  });

  GmailApp.sendEmail("[email protected]", "New DMARC reports", report);
}