<block class="MagentoBackendBlockWidgetGridColumn">
                    <arguments>
                        <argument name="header" xsi:type="string" translate="true">Recipient Email</argument>
                        <argument name="index" xsi:type="string">recipient_email</argument>
                        <argument name="renderer" xsi:type="string">CompanyModuleBlockAdminhtmlWidgetGridColumnRendererRecipientemail</argument>
                        <argument name="sortable" xsi:type="boolean">false</argument>
                    </arguments>
                </block>

<?php
namespace CompanyModuleBlockAdminhtmlWidgetGridColumnRenderer;
class Recipientemail extends MagentoBackendBlockWidgetGridColumnRendererAbstractRenderer
{
    protected $_storeManager;

    public function __construct(
        MagentoBackendBlockContext $context,
        MagentoStoreModelStoreManagerInterface $storeManager,
        MagentoSalesModelOrderItem $orderItem,
        array $data = []
    ) {
        parent::__construct($context, $data);
        $this->_storeManager = $storeManager;
        $this->orderitem =  $orderItem;
    }


    public function render(MagentoFrameworkDataObject $row)
    {
        $code = $row->getCode();
        $result = array();
        $salesorderitem =  $this->orderitem->getCollection()
                          ->addFieldToFilter('product_options', array('like' => '%'.$code.'%'));

        if(!empty($salesorderitem))
        {
            foreach($salesorderitem as $orderdata){
                $productOptions = $orderdata->getProductOptions();
                $recipientemail = $productOptions['giftcard_recipient_email'];
                if(!empty($recipientemail)){
                return $recipientemail;
                }else{
                    return '-';
                }
            }
        }else{
               return '-';
        }


    }

{"info_buyRequest":{"uenc":"aHR0cDovLzE5Mi4xNjguMS4xODQvZGcvZHJ1bW1vbmQtZ29sZi1lLWdpZnQtY2FyZC5odG1s","product":"76450","selected_configurable_option":"","related_product":"","giftcard_amount":"5","giftcard_sender_name":"test","giftcard_sender_email":"testmscgoriteeps@gmail.com","giftcard_recipient_name":"test22","giftcard_recipient_email":"arjun.cmarix@gmail.com","giftcard_message":"test test gift","qty":"1"},"giftcard_sender_name":"test","giftcard_sender_email":"testmscgoriteeps@gmail.com","giftcard_recipient_name":"test22","giftcard_recipient_email":"arjun.cmarix@gmail.com","giftcard_message":"test test gift","giftcard_lifetime":null,"giftcard_is_redeemable":0,"giftcard_email_template":null,"giftcard_type":"0","email_sent":0,"giftcard_created_codes":["HQE9EMUNTA6N"]}