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Last active March 8, 2021 13:49
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Firebase Function for Sending email via Postmark
// eslint-disable-next-line no-async-promise-executor
const functions = require('firebase-functions')
const nodemailer = require('nodemailer')
const postmarkTransport = require('nodemailer-postmark-transport')
const admin = require('firebase-admin')
const striptags = require('striptags')
try {admin.initializeApp(functions.config().firebase)} catch(e) {
console.log('dbMessageOnUpdate initializeApp failure')
const postmarkKey = functions.config().postmark.key
const mailTransport = nodemailer.createTransport(postmarkTransport({
auth: {
apiKey: postmarkKey
exports.forwardMessage = functions.firestore.document('/message/{messageId}').onCreate((snapshot, context) => {
let html="<strong>Name:</strong> "+striptags(snapshot.get('name')+"<br/><br/>"
html+="<strong>Email:</strong> "+striptags(snapshot.get('email'))+"<br/><br/>"
if(snapshot.get('message')) {
return sendEmail(html);
function sendEmail(html) {
const mailOptions = {
from: '"No Reply" <>',
to: '',
subject: 'Contact Request Sent Through Website',
html: html
return mailTransport.sendMail(mailOptions)
.then(() => console.log('dbMessagesOnUpdate:Welcome confirmation email'))
.catch((error) => console.error('There was an error while sending the email:', error))
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