Each year, the Postal Service™ designates the third full week of May as “Mailbox Improvement Week” to encourage customers on city motorized, rural, or contract delivery service routes (formerly highway contract box delivery routes) to examine and, where necessary, improve the appearance of their mailboxes. Neat, attractive mailboxes make a significant contribution to the appearance of the countryside and streets in suburban areas. Mailbox Improvement Week calls attention to the need for providing mailboxes that are:
1. Approved by the Postmaster General®.
3. Designed to protect the mail from weather.
7. Large enough within allowable size limits to support the customer’s daily mail and package volume (see about.usps.com/what-we-are-doing/current-initiatives/delivery-growth-management/welcome.htm).