I just created a React application and follow the getting started guide. Right now anyone can sign up and use my application immediately, even though they haven’t even verified their email address.
How do I only allow specific people to sign up to use my application?
I would like to create a list of pre-defined email addresses that can sign up for my application, or it would also work if only emails ending with “@example” could sign up but they would need to be verified first.
Thanks in advance.