code: public static function findByEmailAndPids($strEmail, $arrPids, array $arrOptions=array())
  	{
  		if (empty($arrPids) || !\is_array($arrPids))
  		{
  			return null;
  		}
  
  		$t = static::$strTable;
  
  		return static::findBy(array("$t.email=? AND $t.pid IN(" . implode(',', array_map('\intval', $arrPids)) . ")"), $strEmail, $arrOptions);
  	}
docs: Find recipients by their e-mail address and parent ID
  
  @param string $strEmail   The e-mail address
  @param array  $arrPids    An array of newsletter channel IDs
  @param array  $arrOptions An optional options array
  
  @return Collection|NewsletterRecipientsModel[]|NewsletterRecipientsModel|null A collection of models or null if there are no recipients