newsletter-bundle/src/Resources/contao/classes/Newsletter.php
public function purgeSubscriptions()
	{
		$objRecipient = NewsletterRecipientsModel::findExpiredSubscriptions();

		if ($objRecipient === null)
		{
			return;
		}

		foreach ($objRecipient as $objModel)
		{
			$objModel->delete();
		}

		// Add a log entry
		$this->log('Purged the unactivated newsletter subscriptions', __METHOD__, TL_CRON);
	}
public function purgeSubscriptions()
	{
		$objRecipient = NewsletterRecipientsModel::findExpiredSubscriptions();

		if ($objRecipient === null)
		{
			return;
		}

		foreach ($objRecipient as $objModel)
		{
			$objModel->delete();
		}

		// Add a log entry
		$this->log('Purged the unactivated newsletter subscriptions', __METHOD__, TL_CRON);
	}
Purge subscriptions that have not been activated within 24 hours