United States Postal Service expects to deliver about 15.5 billion cards, letters, flats and packages during the 2015 holiday season. In addition, it's projecting about 600 million packages will be delivered between Thanksgiving and New Year's Eve, which is an increase of 10.5 percent over last year's volume.

In time for the holidays, USPS will offer real-time delivery notifications - meaning customers who sign up for alerts at will receive notification within a few minutes of the delivery scan for select packages. Read more