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, May 14–20, calls attention to the need for providing mailboxes that are:
- Approved by the Postmaster General.
- Fully operational.
- Designed to protect the mail from weather.
- Safe to use.
- Conveniently located.
- Neat in appearance.