code: public function accessInboxFor($address)
    {
      $inbox = array();
      $addressPlusDelimiters = '<' . $address . '>';
      foreach($this->fetchedEmails as &$email)
      {
        $email->Headers = $this->getHeaders($email->id)->headers;
        if(!isset($email->Headers->bcc))
        {
          if(strpos($email->Headers->to, $addressPlusDelimiters) || strpos($email->Headers->cc, $addressPlusDelimiters))
          {
            array_push($inbox, $email);
          }
        }
        else if(strpos($email->Headers->bcc, $addressPlusDelimiters))
        {
          array_push($inbox, $email);
        }
      }
      $this->setCurrentInbox($inbox);
    }
docs: Access Inbox For
  
  Filters emails to only keep those that are received by the provided address
  
  @param string $address Recipient address' inbox