Log in with email

OK, this can be interesting.

Do you have the source code in somewhere to have some reference about what and how it worked?

It’s here https://plugins.trac.www.ads-software.com/browser/wp-email-login/trunk

But ignore me, this seems to be part of core now. I didn’t realise it had applied to Clean Login too, I thought only to wp-login.php https://github.com/WordPress/WordPress/blob/master/wp-login.php#L896

Ok, but we have to change the reference to WP Email Login to avoid this kind of confussions.

I will prepare an update for this.

I have just did it.