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MIAMI (CBSMiami) – Over the holidays, the U.S. Postal Service really delivered.

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The USPS is reporting that for the month of December they delivered 524 million packages, an 18-percent increase over December 2013.

On the agency’s busiest day, Monday, December 22nd, they delivered 28 million packages, the most packages delivered in a single day in the organization’s history. The package delivery record was set while also delivering approximately 463 million pieces of mail.

“We know how much our customers count on us to make sure cards, letters and gifts make it home, and I’m proud that we delivered on our promise,” said Postmaster General Patrick Donahoe.

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More than 20 million packages were delivered on the five Sundays prior to Christmas to keep the mail moving and networks clear. An additional 118,000 packages were delivered Christmas Day.

“The dedication and resolve of our employees is commendable,” Donahoe said. “They adapted and delivered heavier-than-ever volumes of packages. They worked extremely hard, many of them braving harsh weather.”

The USPS is continuing to anticipate holiday volume through January as consumers use the mail to return holiday gifts.

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