检查邮件是否已读取，Gmail API

Question

I am working on a gmail app (you can probably tell if you read my other questions), I can list my first 10 email, however I have no way of knowing weather they are read or not. Does anyone know how I would even go about this? Thanks!

Answer 1

If I list my newest message:

Request

GET https://www.googleapis.com/gmail/v1/users/me/messages?maxResults=1&access_token={ACCESS_TOKEN}

Response

{
 "messages": [
  {
   "id": "158d822014b7887b",
   "threadId": "158d822014b7887b"
  }
 ],
 "nextPageToken": "17683191771541399341",
 "resultSizeEstimate": 2
}

And then get the message:

Request

GET https://www.googleapis.com/gmail/v1/users/me/messages/158d822014b7887b?format=metadata&access_token={ACCESS_TOKEN}

Response

{
 "id": "158d822014b7887b",
 "threadId": "158d822014b7887b",
 "labelIds": [
  "UNREAD",
  "CATEGORY_SOCIAL",
  "INBOX"
 ],
 ...
}

You can see that the message has a labelId with the value of UNREAD . If the message doesn't have this labelId , it is read.

var isRead = message.labelIds.indexOf("UNREAD") === -1;

Answer 2

just for anyone else that wants to do this here is a simple piece of code that will do it.

if (message.labelIds[0] === 'UNREAD'){
  //do somthing
}

Answer 3

Use the following request to only fetch unread messages

GET https://www.googleapis.com/gmail/v1/users/me/messages?q=is:unread&maxResults=1&access_token={ACCESS_TOKEN}

Reference: https://support.google.com/mail/answer/7190?hl=en