The question of, “Will mail be delivered on Christmas?” is answered with a giant “No.” Now, of course, mail is never delivered on Sundays, but, because Christmas falls on a Sunday this year, the holiday is observed by the post office on Monday, the 26th. All post offices and federal offices of any kind will be closed for the holiday, which means that no businesses nor homes will get mail. This also counts out USPS packages. According to USPS, because it is a federal holiday, all federal offices are closed. However, all federal workers are still paid for the day.
Fedex and UPS will be closed as well. In fact, you can check out the entire holiday schedule for Fedex by clicking here.
Additional holidays on which mail is not delivered are:
New Year’s Day
Martin Luther King Jr’s Birthday
Washington’s Birthday (President’s Day)
As for Christmas Eve, however, post offices will be open, but may have limited hours for the holiday.