Sending username to email

My clients demands that they want an option to let Auth0 have a forgot username. I understand from Forgot Username request that there is not such an option.
Why is this? I guess this is due to the fact that you can also login with that same e-mail address right?
Can you explain why the feature is not offered?

Otherwise I might not be able to use auth0

Hi @casperatvicompany

You can do this, but you must do part of the work yourself.
You’ll need the management API and search for the user:

then you can send an email or display the username (warning, consider the security implications of what you are doing, you must design this process with security in mind).