def send_email(self, mail_sender):

        subst = dict(fullname=self.user.fullname,
                     login=self.user.username,
                     email=self.user.email_to_confirm,
                     app_title=self.app_title,
                     confirmation_url=self.confirmation_url)

        if self.moderator:
            message = _("""
            Hello moderator,

            %(fullname)s is willing to register an account (%(login)s) on the %(app_title)s application.

            Her (his) email address is %(email)s. Please verify it before accepting this account creation.

            In order to confirm that email address and accept the user's registration,
            please click on this confirmation link: %(confirmation_url)s.

            If you don't accept this request, feel free to ignore this email.
            Nothing will change into the user's pending account until your click
            on the confirmation link.

            Once confirmed, the user can login with her (his) login "%(login)s" and
            the password she (he) provided.
            """) % subst
            subject = _("%(app_title)s: Confirm user registration") % subst
        else:
            message = _("""
            Hello %(fullname)s,

            In order to confirm your email address in the %(app_title)s application,
            please click on this confirmation link: %(confirmation_url)s.

            If you are not at the origin of this request, feel free to ignore this
            email. Nothing will change into your account until your click on the
            confirmation link.

            Once confirmed, you can login with your login "%(login)s" and the password you just provided.

            See you soon on %(app_title)s.
            """) % subst
            subject = _("%(app_title)s: Confirm your email address") % subst

        mail_sender.send(subject,
                         [self.moderator if self.moderator else self.user.email_to_confirm],
                         textwrap.dedent(message).strip())
If the email address ``true_dest`` is given, send the mail to
dataset/ETHPy150Open Net-ng/kansha/kansha/authentication/database/forms.py/EmailConfirmation.send_email