Short Google Apps Script snippet that pushes from:, subject and date to a Google Sheet (designed to be triggered frequently). I use the snippet to collect votes sent via email

sendvotes.gs

function myFunction() {
  try {
    var out = [];
    if (GmailApp.getInboxUnreadCount() > 0 ){
      var threads = GmailApp.getInboxThreads();
      for (var i = 0; i < threads.length; i++) {
        out.push([threads[i].getMessages()[0].getFrom(), threads[i].getFirstMessageSubject(), threads[i].getMessages()[0].getDate()]);
        threads[i].moveToArchive();
      }
      
      var doc = SpreadsheetApp.openById('1iu3tAW4u4u9oq4QAk6mf0ItcKWUNMGZpdAYT3es2OI8');
      var sheet = doc.getSheetByName('Email_votes');
      sheet.insertRows(2, out.length);
    sheet.getRange(2, 1, out.length, 3).setValues(out);
    }
  } catch(e) {
    MailApp.sendEmail('martin.hawksey@alt.ac.uk', 'LTAwards email fail', JSON.stringify(e, null, "\t")); 
  }
}