Changes to how the United States Postal Service delivers mail are set to begin this week—and depending on where you're sending from and what you're mailing, you may notice a difference. Starting ...

It won't happen until this summer, so you have plenty of time to prepare. But come July, a sixth consecutive price hike could ...

Rare correspondence—carried by a vanished courier—is one of only "two pieces of what collectors call 'interrupted mail' from the Pony Express," says Postal Museum curator Daniel Piazza.