In this tutorial, you will learn how to send an email and view inbox messages using JavaScript Gmail API. I have provided the complete source code of Gmail API JavaScript example below.
Here are some screenshots of Gmail API JavaScript example app that we will be creating today.
Important Note:
### YOUR CLIENT ID ### with your actual OAuth client ID that you got from Google Developer Console.### YOUR API KEY ### with your actual API key that you got from Google Developer Console.
<!doctype html>
<html>
<head>
<title>Gmail API demo</title>
<meta charset="UTF-8">
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap-theme.min.css">
<style>
iframe {
width: 100%;
border: 0;
min-height: 80%;
height: 600px;
display: flex;
}
</style>
</head>
<body>
<div class="container">
<h1>Gmail API demo</h1>
<a href="#compose-modal" data-toggle="modal" id="compose-button" class="btn btn-primary pull-right hidden">Compose</a>
<button id="authorize-button" class="btn btn-primary hidden">Authorize</button>
<table class="table table-striped table-inbox hidden">
<thead>
<tr>
<th>From</th>
<th>Subject</th>
<th>Date/Time</th>
</tr>
</thead>
<tbody></tbody>
</table>
</div>
<div class="modal fade" id="compose-modal" tabindex="-1" role="dialog">
<div class="modal-dialog modal-lg">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
<h4 class="modal-title">Compose</h4>
</div>
<form onsubmit="return sendEmail();">
<div class="modal-body">
<div class="form-group">
<input type="email" class="form-control" id="compose-to" placeholder="To" required />
</div>
<div class="form-group">
<input type="text" class="form-control" id="compose-subject" placeholder="Subject" required />
</div>
<div class="form-group">
<textarea class="form-control" id="compose-message" placeholder="Message" rows="10" required></textarea>
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
<button type="submit" id="send-button" class="btn btn-primary">Send</button>
</div>
</form>
</div>
</div>
</div>
<div class="modal fade" id="reply-modal" tabindex="-1" role="dialog">
<div class="modal-dialog modal-lg">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
<h4 class="modal-title">Reply</h4>
</div>
<form onsubmit="return sendReply();">
<input type="hidden" id="reply-message-id" />
<div class="modal-body">
<div class="form-group">
<input type="text" class="form-control" id="reply-to" disabled />
</div>
<div class="form-group">
<input type="text" class="form-control disabled" id="reply-subject" disabled />
</div>
<div class="form-group">
<textarea class="form-control" id="reply-message" placeholder="Message" rows="10" required></textarea>
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
<button type="submit" id="reply-button" class="btn btn-primary">Send</button>
</div>
</form>
</div>
</div>
</div>
<script src="//code.jquery.com/jquery-1.11.3.min.js"></script>
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<script type="text/javascript">
var clientId = '### YOUR CLIENT ID ###'
var apiKey = '### YOUR API KEY ###';
var scopes =
'https://www.googleapis.com/auth/gmail.readonly '+
'https://www.googleapis.com/auth/gmail.send';
function handleClientLoad() {
gapi.client.setApiKey(apiKey);
window.setTimeout(checkAuth, 1);
}
function checkAuth() {
gapi.auth.authorize({
client_id: clientId,
scope: scopes,
immediate: true
}, handleAuthResult);
}
function handleAuthClick() {
gapi.auth.authorize({
client_id: clientId,
scope: scopes,
immediate: false
}, handleAuthResult);
return false;
}
function handleAuthResult(authResult) {
if(authResult && !authResult.error) {
loadGmailApi();
$('#authorize-button').remove();
$('.table-inbox').removeClass("hidden");
$('#compose-button').removeClass("hidden");
} else {
$('#authorize-button').removeClass("hidden");
$('#authorize-button').on('click', function(){
handleAuthClick();
});
}
}
function loadGmailApi() {
gapi.client.load('gmail', 'v1', displayInbox);
}
function displayInbox() {
var request = gapi.client.gmail.users.messages.list({
'userId': 'me',
'labelIds': 'INBOX',
'maxResults': 10
});
request.execute(function(response) {
$.each(response.messages, function() {
var messageRequest = gapi.client.gmail.users.messages.get({
'userId': 'me',
'id': this.id
});
messageRequest.execute(appendMessageRow);
});
});
}
function appendMessageRow(message) {
$('.table-inbox tbody').append(
'<tr>\
<td>'+getHeader(message.payload.headers, 'From')+'</td>\
<td>\
<a href="#message-modal-' + message.id +
'" data-toggle="modal" id="message-link-' + message.id+'">' +
getHeader(message.payload.headers, 'Subject') +
'</a>\
</td>\
<td>'+getHeader(message.payload.headers, 'Date')+'</td>\
</tr>'
);
var reply_to = (getHeader(message.payload.headers, 'Reply-to') !== '' ?
getHeader(message.payload.headers, 'Reply-to') :
getHeader(message.payload.headers, 'From')).replace(/\"/g, '"');
var reply_subject = 'Re: '+getHeader(message.payload.headers, 'Subject').replace(/\"/g, '"');
$('body').append(
'<div class="modal fade" id="message-modal-' + message.id +
'" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">\
<div class="modal-dialog modal-lg">\
<div class="modal-content">\
<div class="modal-header">\
<button type="button"\
class="close"\
data-dismiss="modal"\
aria-label="Close">\
<span aria-hidden="true">×</span></button>\
<h4 class="modal-title" id="myModalLabel">' +
getHeader(message.payload.headers, 'Subject') +
'</h4>\
</div>\
<div class="modal-body">\
<iframe id="message-iframe-'+message.id+'" srcdoc="<p>Loading...</p>">\
</iframe>\
</div>\
<div class="modal-footer">\
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>\
<button type="button" class="btn btn-primary reply-button" data-dismiss="modal" data-toggle="modal" data-target="#reply-modal"\
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