Mailboxes are containers used for receiving and sending mail. They can be found in various forms, such as individual mailboxes at homes or larger community mailboxes. Typically made of metal or plastic, mailboxes are designed to protect letters and packages from weather and theft. In many countries, mailboxes are often painted in specific colors, like the iconic red mailbox in the United States. They usually have a slot for dropping in outgoing mail and a door for retrieving incoming mail. Mailboxes play a crucial role in the postal system, ensuring efficient communication between people.