var msgs = GmailApp.getMessagesForThreads(GmailApp.getInboxThreads());
for (var threadCount = 0 ; threadCount < msgs.length; threadCount++) {
for (var msgCount = 0; msgCount < msgs[threadCount].length; msgCount++) {
var messageObj = msgs[threadCount][msgCount];
var read = messageObj.isUnread();
var subject = messageObj.getSubject();
var body = messageObj.getBody();
var attachments = messageObj.getAttachments();
for (var attachCount = 0; attachCount < attachments.length; attachCount++) {
if (attachments[attachCount].getName() == "data.csv") {
var attachCsv = Utilities.parseCsv(attachments[attachCount].getDataAsString("UTF-8"));
// TODO
}
}
messageObj.markRead();
Logger.log(messageObj.getDate());
}
}