Cleanup Apple Notes leftover in Gmail (I moved my notes to iCloud but noticed it kept a bunch of leftovers of every single revision every in gmail, so wrote a small script to remove them to a label to review/delete anything no longer needed)

gistfile1.js

var Imap = require('imap'),
  inspect = require('util').inspect;

var imap = new Imap({
  user: 'yourname@gmail.com',
  password: 'yourpassword',
  host: 'imap.gmail.com',
  port: 993,
  tls: true
});

function openInbox(cb) {
  imap.openBox('[Gmail]/All Mail', false, cb);
}

imap.once('ready', function () {
  openInbox(function (err, box) {
    if (err) throw err;

    var f = imap.seq.fetch('1:' + box.messages.total, {
      bodies: 'HEADER.FIELDS (FROM TO SUBJECT DATE X-Uniform-Type-Identifier)',
      struct: true
    });

    f.on('message', function (msg, seqno) {

      var isNote = false;

      console.log('Message #%d', seqno);
      var prefix = '(#' + seqno + ') ';
      msg.on('body', function (stream, info) {
        var buffer = '';
        stream.on('data', function (chunk) {
          buffer += chunk.toString('utf8');
        });
        stream.once('end', function () {
          var headers = Imap.parseHeader(buffer);

          if (headers.hasOwnProperty('x-uniform-type-identifier') && headers['x-uniform-type-identifier'].length > 0 && headers['x-uniform-type-identifier'][0] == 'com.apple.mail-note') {
            console.log(Imap.parseHeader(buffer));

            isNote = true;

          }

        });

      });

      msg.once('attributes', function (attrs) {
        if (isNote) {

          imap.addLabels(attrs.uid, 'Notes', function (err) {
            if (err) console.log('setLabels error: ', err);
          });


          console.log(prefix + 'Attributes: %s', inspect(attrs, false, 8));
        }

      });

      msg.once('end', function () {
        //console.log(prefix + 'Finished');
      });

    });

    f.once('error', function (err) {
      console.log('Fetch error: ' + err);
    });

    f.once('end', function () {
      console.log('Done fetching all messages!');
      imap.closeBox(function (err) {
        if (err) console.log(err);
        imap.end();
      });


    });
  });
});

imap.once('error', function (err) {
  console.log(err);
});

imap.once('end', function () {
  console.log('Connection ended');
});

imap.connect();