Change reply-to email address from Admin to Vendor

reply-to-email-address-admin-to-vendor.php

#-- Change Reply-to Email Address from Admin to Vendor --#
function change_reply_to_email_address( $header, $email_id, $order ) {

    if( $email_id =='customer_processing_order' ){       

        $vendor_id = dokan_get_seller_id_by_order( $order->get_id() );
        $vendor    = dokan()->vendor->get( $vendor_id );

        // HERE below set the name and the email address
        $reply_to_name  = $vendor->get_shop_name();
        $reply_to_email = $vendor->get_email();

        // Get the WC_Email instance Object
        $email = new WC_Email( $email_id );

        $header  = "Content-Type: " . $email->get_content_type() . "\r\n";
        $header .= 'Reply-to: ' . $reply_to_name . ' <' . $reply_to_email . ">\r\n";

    }

    return $header;

}

add_filter( 'woocommerce_email_headers', 'change_reply_to_email_address', 10, 3 );