firebase custon reset password code example

Example 1: firebase forget password

It sounds like you're looking to send a password reset email. See this example from the Firebase documentation:

FirebaseAuth.getInstance().sendPasswordResetEmail("[email protected]")
    .addOnCompleteListener(new OnCompleteListener() {
        @Override
        public void onComplete(@NonNull Task task) {
            if (task.isSuccessful()) {
                Log.d(TAG, "Email sent.");
            }
        }
    });

Example 2: firebase reset password javascript

To implement a forgot password button, you have to call: firebase.auth().sendPasswordResetEmail('[email protected]')

Check the documentation for more details: https://firebase.google.com/docs/reference/js/firebase.auth.Auth#sendPasswordResetEmail