Recently, the people who write a handwritten letters has decreased due to the spread of the internet and the computer.
However, I think a feeling is transmitted through the handwritten letter much more than the emails or text messaging.
In order to easily write and send a letter I designed the mailbox with the vending machine from which you can buy “letter set” capsule consisting of stamp, envelope and letter paper for 50¢. These things will be inside the capsule.