docs: def clean_email(self):
          """ ensure email is in the database """
          if EMAIL_CONFIRMATION:
              from .models import EmailAddress
              condition = EmailAddress.objects.filter(
                  email__iexact=self.cleaned_data["email"],
                  verified=True
              ).count() == 0
          else:
              condition = User.objects.get(
                  email__iexact=self.cleaned_data["email"],
                  is_active=True
              ).count() == 0
  
          if condition is True:
              raise forms.ValidationError(
                  _("Email address not verified for any user account")
              )
          return self.cleaned_data["email"]