The U.S. Postal Service (USPS) says it’s primed and ready to deliver ‘exceptional service’ this holiday season—and staff want to make sure your gifts get delivered on time. If you want packages to arrive before Dec.

With so many of my readers looking for last-minute gift ideas, I wanted to remind you of holiday shipping deadlines to keep in mind. This is especially important if you tend to be a procrastinator shopper and like to leave things for the last minute.

According to USPS, if you want your mail to make it to its destination by Christmas, First Class Mail should be sent by December 18. Priority Mail should be sent by December 19. Priority Mail Express should be sent by December 21.