Signup form with email OTP verification with Firebase template

Verify your users' email address sending them a one-time-password (OTP) and sign them up with Firebase.

Signup form with email OTP verification with Firebase

About this template

This signup form with Firebase includes:

  1. An initial step that requires the full name, email and password.
  2. A flow that checks if the email is available, generates an OTP and sends it via email.
  3. A second step that requires the verification code.
  4. And last, a flow that verifies the OTP and issues a token to automatically log the user in.

How to configure this template


This template uses a test-only action to send emails. Consider replacing it with your own email provider (eg. Mailjet or Sendgrid) before using it in production to avoid limitations.

Redirect URL

Go to the Form's Ending screen settings and replace the Redirect URL value to where the users will be redirected after you log them in.

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Explore the docs

Need some inspiration?

Discover our best practices guides to design the perfect signup flow, examples of other SaaS companies, and success stories of our clients.

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Getting started with Arengu

Arengu allows you to build all your user flows connected to your current stack, and avoids coding all the UI, complex integrations, validations or logic from scratch. Try it for free and start building faster and scaling your application needs as they grow.