Firebase Auth – State Update on emailVerified

Question

I have ignored the email/password sign up process and the necessary email verification for a long time and only used the very basic functionality to get started and build on top of that. But now I reached the point where I cannot avoid to use a more production-grade email/password sign up process. Currently I am using these Firebase services: Authentication (email/password only), Firestore and Cloud Functions with a react-native application.

When a user signed up successfully (signed in but without an verified email!) the react native application won't offer functionality until the user has verified his/her email. Right after the sign up the client will send an email with an verification link (through the default firebase server), the user can verify his/her email by clicking the link.

The issue: How to react suitable to a change of emailVerified or any other event which fires if the email got verified?

I have now searched the whole day for a working solution. These are my approaches:

• Use your own website to which all verification links are linked (tried this but did not work at my first attempt)
• use actionCodeSettings in the email verification link to redirect the user and let the client reload its components
• Use Cloud Messaging and inform the client about changes to the email verification status
• call a Cloud Function (from an external server) which updates a tmp document in Firestore to which the client subscribed
• reload()/loop

I am thankful for all comments, helpful links etc.!

Answer 1

There is a method in the Firebase SDK: isEmailVerified() which tells if the user has verified the email or not.

For react native, I found straightforward documentation: Email Verified. On the launch of the app, you can check if the user has verified the email or not and then make changes accordingly!

Happy Coding!