The nation’s mail service is preparing to implement core components of Postmaster General Louis DeJoy’s 10-year plan for the agency, a program designed to cut costs and raise new revenue to fix its many financial problems.

Your mail may slow down because the Postal Service lengthened its “service standards,” or the amount of time it says it should take for a piece of mail to get delivered. And how much slower it will get depends on where you live.

That’s because the Postal Service is changing the way it transports your mail. The Postal Service used to put about 20 percent of your mail on airplanes to move it across the country. This is the mail that was going from coast to coast, and to make the three-day service standard, the agency had to move it faster than was possible on a truck.

Now it’s going to drive. The new service standard will cut air transportation to only 12 percent of first-class mail. Postal leadership says this will both cut costs — the agency spends a lot more flying mail than it does trucking it — and increase predictability. During the 2020 holiday season, the air-transport network was not reliable enough to keep the Postal Service’s processing centers running on schedule. So even if trucks take longer, the agency hopes they will be more predictable.

https://www.washingtonpost.com/business/2021/10/01/usps-slowdown-prices-faq/