public function setContactSuppressedForContactIds($suppressedContactIds)
    {
        if (empty($suppressedContactIds)) {
            return 0;
        }
        $conn = $this->getConnection();
        //update suppressed for contacts
        $updated = $conn->update(
            $this->getMainTable(),
            ['suppressed' => 1],
            ['email_contact_id IN(?)' => $suppressedContactIds]
        );

        return $updated;
    }