SuperTokens is an open source authentication solution offering features like: Different types of login: Email / password, Passwordless (OTP or Magic link based).

SuperTokens.com

React doesn't have emailverification module?

This: import EmailVerification from 'supertokens-auth-react/recipe/emailverification';
gave an error: Module not found: Can't resolve 'supertokens-auth-react/recipe/emailverification'

The latest version does. Maybe you are using an older version

And if you are upgrading to the latest version of the frontend SDK, also be sure to upgrade the backend SDK to the latest version