Neighborhood letter carriers will be out as early as 6 a.m. during the postal service's peak season, which runs from Thanksgiving to New Years Day, according to a post office spokesperson.
The postal service will deliver between 850 million and 950 million packages in the next five weeks. In all, an estimated 12 billion letters, cards and packages will be processed and delivered.
The busiest week is expected to be Dec. 13 to Dec. 18, when nearly 2.3 billion pieces of mail will be processed.
"We are ready to deliver for the American people this holiday season," Postmaster General Louis DeJoy said in a statement. "We have been planning, investing, and hiring every day for the past twelve months to improve our network and our service for the busiest time of the year. I'm proud of our entire Postal Team and their tremendous dedication and preparation – we are ready to go."