When using Email provider, is it possible to specify certain emails to access?

[chloesun]

I'm building an internal site, and it should only be accessible to certain users. Is it possible to specify certain emails that can be signed in through Email provider, so the admin can manage who can access the site?

I'm not sure if this is possible for the passwordless tech, or I need to use username/password approach.

Thanks for your input!

[StefanSelfTaught]

You can try to use the signIn callback like this:

async signIn(user, account) {
  if (account.type === 'email' && user.email = '[email protected]') {
    return true
  }
  return false
}