Monday is the busiest mailing day of the year for the U.S. Postal Service.
The USPS will deliver 30 million letters and packages today alone.
That includes 2.4 million letters and packages just in the Denver metro area.
Monday is the deadline for Priority Mail service for delivery by Christmas.
For the ultimate procrastinator, there is Priority Express service. You can mail as late as Dec. 23 and in most areas your package will be delivered by Christmas day.
Find your nearest post office and more information on mailing deadlines here: usps.com/