Which of the following items is NOT applicable to Simplified Address?

Simplified Address is a mailing format that is designed to streamline the processing of certain types of mail. It allows for a more efficient way to direct items without the need for full addresses, benefiting items that typically don't require detailed addressing for reasons such as standardized delivery routes or bulk mailing practices.

In this context, postcards are generally not applicable to Simplified Address because they typically require a clear address for delivery. Unlike other items such as sealed items, typewritten letters, or personal documents that might not be affected by detailed address requirements due to their inherent formatting or purposes, postcards are designed to be sent with visible addresses and often utilized for personal communications where recipient identification is paramount.

This distinction highlights the nature of postcards as items that demand explicit delivery information, making them unsuitable for the Simplified Address format, which aims to reduce addressing complexity for certain other types of correspondence.