public function isInboundEmailToEmailAddressMapToUser() {

        // We map an inbound Mailgun route to a record in the "users" table, by email address
        $mappedRoutes = config('lasallecmsmailgun.inbound_map_mailgun_routes_with_user_email_address');

        foreach ($mappedRoutes as $route => $user) {

            // if "from" email address is the same as the route specified in the config...
            if ($this->request->input('recipient') == $route) {
                return true;
            }
        }

        return false;
    }