To ensure timely delivery of cards, letters and packages within the United States by Dec. 25, the Postal Service recommends that customers ship their items by the following dates:

2017 Mail-by Dates (US Addresses)

  • Dec. 14 – USPS Retail Ground
    Ground service for less-than-urgent deliveries and oversized packages.
  • Dec. 19 – First-Class Mail
    Service for standard-sized, single-piece envelopes and small packages weighing up to 13 ounces with delivery in 3 business days or less.
  • Dec. 20 – Priority Mail
    Domestic service in 1, 2 or 3 business days based on where the package is mailed and where it’s being sent, variety of flat-rate options.
  • Dec. 22 – Priority Mail Express*
    Fastest domestic service, guaranteed overnight scheduled delivery to most locations. Some restrictions and exceptions apply.

    For Priority Mail Express® shipments mailed December 22 through December 25, the money-back guarantee from USPS applies only if the shipment was not delivered, or delivery was not attempted, within two (2) business days. See DMM® Section 604. Privacy Notice: For more information regarding our privacy policies, visit
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