sendgrid.js

// Copyright 2015-2016, Google, Inc.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

'use strict';

// [START send]
// This sample is based off of https://www.npmjs.com/package/sendgrid#without-mail-helper-class
var Sendgrid = require('sendgrid')(
  process.env.SENDGRID_API_KEY || '<your-sendgrid-api-key>'
);

var request = Sendgrid.emptyRequest({
  method: 'POST',
  path: '/v3/mail/send',
  body: {
    personalizations: [{
      to: [{ email: 'to_email@example.com' }],
      subject: 'Sendgrid test email from Node.js on Google Cloud Platform'
    }],
    from: { email: 'from_email@example.com' },
    content: [{
      type: 'text/plain',
      value: 'Hello!\n\nThis a Sendgrid test email from Node.js on Google Cloud Platform.'
    }]
  }
});

Sendgrid.API(request, function (error, response) {
  if (error) {
    console.log('Mail not sent; see error message below.');
  } else {
    console.log('Mail sent successfully!');
  }
  console.log(response);
});
// [END send]