2024 Christmas Last Day Postal Mail. Monday, december 25th, 2024 on christmas, usps stores countrywide will be closed with no delivery. The last posting date for regular and tracked 2nd class mail is monday 18th december, it’s wednesday 20th december for first class regular and.

Royal mail’s last christmas posting dates for 2021. Royal mail has urged customers to post items and gifts for christmas as early as possible.