How does house-to-house mail delivery differ from post-office box delivery?

House-to-house mail delivery and post-office box delivery differ primarily in the point of final receipt for the recipient.

In most countries, the standard method of delivery is on a house-to-house basis, where postal carriers transport mail directly to an individual's residence or business address. This service relies on a network of carriers to distribute items to specific locations.12

Conversely, a post office box is a secure box located within a post office facility where an individual or business can have their mail delivered. Instead of the mail being brought to their home or office, the recipient must travel to the post office to collect their correspondence. While the vast majority of mail is delivered by carriers to homes and businesses, approximately one-tenth of mail is delivered through post-office boxes.312