Fetch sender email address in Gmail message list API

0
votes

I'm using Gmail API to fetch email address (of the sender) for last 10 emails.
URL: https://developers.google.com/gmail/api/v1/reference/users/messages/list

But Users.messages: list API returns message resource (which includes only email ID).
And for fetching sender email address, I have to make one Users.messages: get API call for each message resources, that's increases load time.

How can I fetch email address of sender along with email ID in the response of Users.messages: list API?
OR Somehow I can fetch last 10 sender email address in one API call?

My current code Example:

$params = [
    'labelIds' => 'INBOX',
    'maxResults' => 10
];
$emails = $service->users_messages->listUsersMessages('me', $params);
foreach ($emails->getMessages() as $email) {
    $email_data = $service->users_messages->get('me', $email->id, ['format' => 'full']);
}
1
phpgoogle-apigmail-api

1 Answers

0
votes

How can I fetch email address of sender along with email ID in the response of Users.messages: list API?

Answer:

You can't, Users.messages: get needs to be used to retrieve this information.

More Information:

As per the Users.messages: list documentation about the properties of the response resource:

messages[]: List of messages. Note that each message resource contains only an id and a threadId. Additional message details can be fetched using the messages: get method.

The Users.message resource page gives more information about the full response which is able to be retrieved from messages: get:

{
  "id": string,
  "threadId": string,
  "labelIds": [
    string
  ],
  "snippet": string,
  "historyId": unsigned long,
  "internalDate": long,
  "payload": {
    "partId": string,
    "mimeType": string,
    "filename": string,
    "headers": [
      {
        "name": string,
        "value": string
      }
    ],
    "body": users.messages.attachments Resource,
    "parts": [
      (MessagePart)
    ]
  },
  "sizeEstimate": integer,
  "raw": bytes
}

What you need to do:

In order to get the message ID and sender email address, you need to make a Users.messages: list call to get the email IDs, then make a Users.messages: get request on each message ID to get the sender email. As there is no Users.messages: batchGet method, there is unfortunately no way around this.

I know this is generally bad news, but I hope this is helpful to you!

References: