使用 Gmail 的 API JavaScript 获取包含附件的电子邮件

Question

I'm trying to get a list of emails that contain attachments, I'm getting a list of messages, each message contains 2 properties - id and threadID - I assumed that since the messages do not hold an AttachmentID property, they do not have one either.

I didn't find a way to retrieve only messages with attachments.

This is the code:

function execute() {
    return gapi.client.gmail.users.messages.list({
        "userId": "myid@gmail.com",
        "includeSpamTrash": false,
        "maxResults": 100,
    }).then(function (response) {
                // Handle the results here (response.result has the parsed body).
                console.log("Response", response);
            },
            function (err) { console.error("Execute error", err); });
}

Answer 1

To retrieve only the messages that contains an attachment, you should use the method users.messages.list while including a q parameter to show only messages with attachments. That q parameter can be set up with the string has:attachment . On JavaScript that requests looks like the following:

  function execute() {
    return gapi.client.gmail.users.messages.list({
      "userId": "{ YOUR USERID HERE }",
      "q": "has:attachment"
    })
        .then(function(response) {
                console.log("Response", response);
              },
              function(err) { console.error("Execute error", err); });
  }

Please remember to update the userId parameter to match your own scenario.

Answer 2

function execute() {
  return gapi.client.gmail.users.messages.list({
    "userId": "myid@gmail.com",
    "q": "has:attachment", // This right here
    "includeSpamTrash": false,
    "maxResults": 100,
  })
    .then(
      function (response) {
        // Handle the results here (response.result has the parsed body).
        console.log("Response", response);
      },
      function (err) {
        console.error("Execute error", err)
      }
    )
}

The "q" parameter has a horde of options you can use to filter the output. This also works in the Gmail UI.