public function getContactsToImportForWebsite($websiteId, $pageSize = 100)
    {
        $collection = $this->addFieldToFilter('website_id', $websiteId)
            ->addFieldToFilter('email_imported', ['null' => true])
            ->addFieldToFilter('customer_id', ['neq' => '0']);

        $collection->getSelect()->limit($pageSize);

        return $collection;
    }