We are bulk migrating our users from our external database to Auth0 using Auth0 import/export functionality. We are moving them from a 3rd party vendor database and we don’t know their passwords. We don’t want to send them a reset password email. Instead, when they login first time, we want to show them a customized error message saying they have to click on forgot password and reset their password. But the problem is without reading the user profile how can I find out if it is the user’s first login. So my question is how to read user profile by email address from the login page even before he logs in.