Send an email message with an attachment via Front's API

send-message-with-attachment.js

const FRONT_API_TOKEN = 'YOUR FRONT API TOKEN GOES HERE';
const CHANNEL_ID = 'YOUR FRONT CHANNEL ID GOES HERE';

const FormData = require('form-data');
const fs = require('fs');

// abstract and promisify actual network request
async function makeRequest(formData, options) {
  return new Promise((resolve, reject) => {
    const req = formData.submit(options, (err, res) => {
      if (err)
        return reject(new Error(err.message))

      if (res.statusCode < 200 || res.statusCode > 299)
        return reject(new Error(`HTTP status code ${res.statusCode}`))

      const body = [];
      res.on('data', (chunk) => body.push(chunk));
      res.on('end', () => {
        const resString = Buffer.concat(body).toString();
        resolve(resString);
      })
    })
  })
}

const formData = new FormData()

// Set your data here: (See full options at https://dev.frontapp.com/reference/messages-1#post_channels-channel-id-messages)
formData.append('subject', 'Message subject');
formData.append('to[0]', '[email protected]');
formData.append('to[1]', '[email protected]');
formData.append('sender_name', 'Support');
formData.append('body', '<p>Message body</p>');
formData.append('attachments[0]', fs.createReadStream('./photo.jpg'));

const options = {
  host: 'api2.frontapp.com',
  path: `/channels/${CHANNEL_ID}/messages`,
  method: 'POST',
  protocol: 'https:', // note : in the end
  headers: {
    Authorization: `Bearer ${FRONT_API_TOKEN}`
  },
}

async function run() {
  const res = await makeRequest(formData, options);
  console.log(res);
}

run()