public function updateSubscribers($emailContactIds)
    {
        if (empty($emailContactIds)) {
            return 0;
        }
        $write = $this->getConnection();
        //update subscribers imported
        $updated = $write->update(
            $this->getMainTable(),
            ['subscriber_imported' => 1],
            ["email_contact_id IN (?)" => $emailContactIds]
        );

        return $updated;
    }