Priority Mail offers 2 – to 3-day service, but is not a guaranteed service to most domestic destinations. Items must weigh 70 pounds or less measure 108 inches or less in combined length and girth.
Features Priority Mail envelopes, boxes, and labels are available at no charge at post offices or by calling 1-800-222-1811. Pickup service is available for $10.25 per stop, regardless of the number of pieces to be picked up.
Flat-Rate Envelope The rate is $3.95, regardless of weight or destination, for matter sent in a flat-rate Priority Mail envelope provided by the Postal Service.