Today expected to be busiest shipping day of the year

With Christmas less than two weeks away, today is expected to be the busiest mailing day of the year.

The Postal Service is on track to deliver approximately 15.5 billion cards, letters, flats, and packages during the 2015 holiday season.

Monday, Dec. 21 is expected to be the biggest delivery day, with more than 30 million packages expected to be delivered that day alone.

This is the busiest day of the year for United States Postal Service.

The deadline for Priority Mail is Monday, Dec. 21 and for Priority Mail Express it is Wednesday, Dec. 23. If sending first-class or Global Express Guaranteed, you have until Saturday.

Postal workers across North Texas say to expect long lines if you plan to get things mailed today.

Not used to getting a holiday gift delivery on Sunday? Last week The Postal Service started its new high-speed package sorting machines in Denver.

FedEx predicts it will move a record-breaking 317 million shipments between Black Friday and Christmas Eve.

Customers can also visit usps.com/holiday for more information.

That’s up 11 percent from previous year.