The U.S. Postal Service says it will deliver packages seven days a week in many cities and high-volume areas every Sunday before Christmas.
The Postal Service will offer real-time delivery notifications for customers who sign up for alerts at myusps.com.
Monday, December 21, is expected to be the busiest delivery day for holiday packages, cards and letters.
Consumers can also visit usps.com/holiday for more information.
Mailing and shipping deadlines:
Dec. 15 – Standard Post
Dec. 19 – First Class Mail
Dec. 19 – Global Express Guaranteed
Dec. 21 – Priority Mail
Dec. 23 – Priority Mail Express