Firebase Cloud Functions: Send Email via Authentication System

Question

Firebase Authentication has a built in email service. Is it possible to fire an auth based email via Cloud Functions (admin js sdk)?

Seems like I should be able to trigger an email from noreply@my-domain.com with a custom oob code which I could then use to drive my (client-side) application.

My use case would be, when a new order .collection("orders").doc(uid) has its stage field updated/changed to 'submitted' I would like to notify a user via email that a new order is submitted. Maybe even use the oob code to mark as 'processed'?

...just trying to avoid using a 3rd party email service altogether.

Answer 1

you can use MailChimp to do what you are asking, since like Miles says, you will need to do a workaround in order to fix this.

I have been using MailChimp my self to send emails to each user registered in my app , i have setup a couple of emails in mailchimp and i just add to the list all the users that register to my app, so the first message will be the welcome message, then after 2 days another email and so on, you can trigger an email whenever you want, since the doc is not that clear i have made a tutorial on how to integrate it with Android.

you can find that tutorial HERE , the only thing is that is in spanish, sorry.

The idea is simple, just get your users email throught FirebaseAuth , pass that email to the mailchimp query , and then setup an email from the mailchimp website

Answer 2

Unfortunately, their API does not appear to support emailing users in your project. However, they have sample code for cloudfunctions to email users you can easily tweak for your needs: https://github.com/firebase/functions-samples/tree/master/quickstarts/email-users