Mail, Package and Delivery! Community postal mail boxes, each resident gets their own key and mail box. Mail man puts all the mail in, individuals use their key to remove mail, packages and other deliveries. National Postal Worker Day on July 1st recognizes postal workers all across the nation and encourages us to show our appreciation. Thank the numerous men and women who work consistently and diligently to deliver all of our mail. These employees suffer some of the harshest working conditions.