USPS Announces Recommended Ship-By Dates to Ensure Gifts Arrive by Christmas12/01/2025If you’re planning on sending Christmas gifts to your loved ones in the mail, the U.S. Postal Service announced its recommended ship-by dates to ensure your gifts arrive by December 25th.USPS Ground Advantage and First Class Mail - December 17th.Priority Mail - December 18thPriority Mail Express - December 20th.The Postal Service’s recommended ship-by dates apply to the lower 48 states and the actual delivery date may vary based on several factors. Click here for more details from the postal service.