Secure OTP Generation
Cryptographically secure, time-limited one-time passwords
Email OTP Authentication
Email OTP (One-Time Password) is an authentication method that sends a unique, time-limited numeric code to the user's email address for identity verification - providing a simple, passwordless alternative to traditional login.
Let users sign in with a code instead of a password - one API alongside passkeys, magic links and social login. Email OTP is included from the Free plan up.
Key Features
Secure and reliable email-based one-time passwords
Customizable Email Templates
Brand the OTP emails to match your company identity
Configurable Expiry Times
Set custom expiration times for enhanced security
Rate Limiting
Built-in protection against brute force attacks
Reliable Delivery
99.5%+ email delivery, with SPF, DKIM and DMARC
Comprehensive Analytics
Detailed insights into OTP usage and success rates
How Email OTP Works
A simple, secure authentication flow for your users
Request
User enters their email address on your login page
Delivery
User receives an email with a secure, time-limited OTP code
Verification
User enters the OTP code to complete authentication
Simple Integration
Implementing Email OTP with MojoAuth is straightforward. Our SDKs handle the complexity, so you can focus on building your application.
- Deploy in hours, not months
- Customizable email templates
- Secure OTP generation and validation
- Comprehensive analytics and reporting
<!DOCTYPE html> <head> <script charset="UTF-8" src="https://cdn.mojoauth.com/js/mojoauth.min.js"> </script> </head> <body> <div id="mojoauth-passwordless-form"></div> <script> const mojoauth = new MojoAuth("Your MojoAuth API Key", { language: 'language_code', redirect_url: "your_redirect_url", source: [{ type: "email", feature: "otp" }], }) mojoauth.signIn().then(response => console.log(response)); </script> </body> </html>
Benefits of Email OTP
Why businesses and users choose email OTP authentication
For Businesses
- No password management overhead
- Reduced account takeover fraud
- Enhanced security with time-limited codes
- Works with existing email infrastructure
- Deploy in hours, not months
- Detailed analytics on authentication patterns
For Users
- No passwords to remember
- Familiar email-based workflow
- Enhanced security for sensitive accounts
- Works across all devices and platforms
- Simple verification process
- Reduced risk of credential theft
Works with every other method on the same API
Offer Email OTP alongside passkeys, magic links, phone OTP, social login and One Tap from one integration - add methods without rewriting your login.
See every authentication methodFrequently Asked Questions
Ready to implement Email OTP?
Fewer lost signups, no passwords to reset - start with Email OTP on the Free plan (25,000 MAU, no credit card).
Call +1-844-321-AUTH