Parcel delivery

The service was quick and satisfying, but something troubled me and prompted me to express my concern. My son asked for a hard drive, which was given to me when he was home. I was surprised by a loud knock on the front door and, without thinking of putting on a mask, I jumped up to look out the open window. He was Mr Shoppers driver, he reached out and handed me the package through the open window. What worries me is the fact that the gentleman was not wearing a mask. Something I would have hoped was mandatory when calling a customer. In closing, I would appreciate a response from Mr Shopper