Using Gmail JavaScript API to Search Email Threads

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Published in: Gmail - Javascript

This code uses the Gmail JavaScript API to search the inbox of the authenticated user (userId = me) for email threads that match the specified query. You need to create a new project in Google developer console with the Gmail API enabled.

The scope can be https://www.googleapis.com/auth/gmail.readonly since this Gmail app requires only read only access to the user’s mailbox.

var threads = function listGmailThreads(userId, query, callback) {
    var getPageOfThreads = function (request, result) {
        request.execute(function (resp) {
            result = result.concat(resp.threads);
            var nextPageToken = resp.nextPageToken;
            if (nextPageToken) {
                request = gapi.client.gmail.users.threads.list({
                    'userId': userId,
                    'q': query,
                    'pageToken': nextPageToken
                });
                getPageOfThreads(request, result);
            } else {
                callback(result);
            }
        });
    };
    var request = gapi.client.gmail.users.threads.list({
        'userId': userId,
        'q': query
    });
    getPageOfThreads(request, []);
}
Published in: Gmail - Javascript

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Amit Agarwal

Amit Agarwal is a Google Developer Expert in GSuite and Google Apps Script. He holds an engineering degree in Computer Science (I.I.T.) and is the first professional blogger in India. Read more on Lifehacker and YourStory

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