A green Dublin Post Box in Grafton Street, central Dublin, Republic of Ireland, Europe

Mailbox, North Island, New Zealand

Cockerel mailbox, North Island, New Zealand

Pair of mailboxes, North Island, New Zealand

Modern plastic mailbox, North Island, New Zealand

Pair of mailboxes, North Island, New Zealand

Painted mailbox, North Island, New Zealand

Row of mailboxes, North Island, New Zealand

Mailbox set into a tree trunk, North Island, New Zealand

Row of mailboxes, North Island, New Zealand

Cow design mailbox, North Island, New Zealand

Pair of mailboxes, North Island, New Zealand

Cow design mailbox, North Island, New Zealand

Mailbox, North Island, New Zealand

Mailbox set into tree trunk, North Island, New Zealand

Members of the American Postal Workers Union rally to save six-day mail delivery, Michigan AFL-CIO President Mark Gaffney speaking to the crowd, Detroit, Michigan, USA, America

Georgian Post Office red letter box; Allenheads, Northumberland, England

Yellow postal delivery vehicle parked outside a townhouse