function _add_pending_activation_notice( $email = false, $is_pending_trial = false ) {
            if ( ! is_string( $email ) ) {
                $current_user = self::_get_current_wp_user();
                $email        = $current_user->user_email;
            }

            $this->_admin_notices->add_sticky(
                sprintf(
                    $this->get_text_inline( 'You should receive an activation email for %s to your mailbox at %s. Please make sure you click the activation button in that email to %s.', 'pending-activation-message' ),
                    '<b>' . $this->get_plugin_name() . '</b>',
                    '<b>' . $email . '</b>',
                    ( $is_pending_trial ?
                        $this->get_text_inline( 'start the trial', 'start-the-trial' ) :
                        $this->get_text_inline( 'complete the install', 'complete-the-install' ) )
                ),
                'activation_pending',
                'Thanks!'
            );
        }