Is First Class mail sealed against inspection?

First-Class mail is indeed sealed against inspection, meaning that it is generally considered private and confidential. This type of mail includes personal letters, postcards, and small packages. The U.S. Postal Service (USPS) recognizes the right to privacy of the sender and recipient, which is why First-Class mail is protected from being opened or inspected by unauthorized individuals.

This privacy applies specifically to mail that is not subject to other legal requirements or inspections, such as those imposed for security or legal reasons. In most scenarios, once an item is sent via First-Class mail, it is understood to be a personal communication between the sender and the recipient, and any unauthorized opening of that mail could violate federal postal laws.

In this context, the other options do not accurately represent how First-Class mail is treated. For instance, implying that it is not sealed against inspection or only sealed under certain circumstances undermines patrons' privacy rights afforded by the USPS. The answer clearly establishes the principle that individuals should expect their private correspondence to remain confidential when using First-Class mail services.