SMS & email verification with one-time passwords

Reinforce the security of your registration forms by easily implementing OTP via email or SMS, and services like Twilio, Mailjet, WhatsApp, etc.

SMS & email verification with one-time passwords
Mutua Madrileña

How it works

OTP verification features

Send OTPs by email

Verify your user's identity by sending temporary codes via email during the signup process. Build passwordless registration flows in minutes, with our fully editable templates, and adapt temporary code's length to your security needs.

Send OTPs by SMS

Start sending one-time passwords by SMS using Twilio or any service with an API. Verify the phone number of your new users to create an even more secure registration flow. Start from scratch or use our fully customizable templates.

Send OTPs by WhatsApp

Easily send temporary codes and one-time passwords using messaging apps, to verify your users identity. A native integration with WhatsApp is provided by the editor, so you can connect your account with just a few clicks.

Get started with a template

Import a template with just a few clicks and adapt it to your needs


KYB form for business details

Collect basic legal information about the business.

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Custom policies acceptance with Auth0

Require your users to accept custom policies the next time they sign in or when they create an account.


Multistep form with Airtable

Display your Airtable form in two steps and create a new record.


Signup form with phone OTP verification with Auth0

Verify your users' phone number sending them a one-time-password (OTP) and sign them up with Auth0.

Data verification

Custom OTP verification code UI

A custom field to allow the user to input the OTP or temporary code.

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Signup form with email OTP verification with Supabase

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

See all the templates

Other popular features

Discover what use cases you can build with Arengu

Security and privacy by default

We help you comply with your security and privacy policies. You decide where you want to store the information you collect, and who has access to it.

SOC 2 certified

Monitored by a 3rd party to stay compliant with SOC 2 security standards.

GDPR compliant

Full control of your data to help you comply with your privacy policies.

Hosted in the EU

Servers and data are securely hosted in the European Union.

Encrypted data

Data is stored encrypted using the AES256 algorithm.

Learn more about security

Out of the box integrations

Send your data back and forth between Arengu and your favourite apps.

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.