Express Mail is the fastest service, with guaranteed next day delivery to most destinations. Express Mail is delivered 365 days a year-with no extra charge for Saturday. A $12.50 surcharge is levied for Sunday or holiday delivery. Items must weigh 70 lbs or less and measure 108 in. or less in combined length and girth. Prices are for retail (at Post Office) and online.
Customer Service: 1-800-275-8777. Order Express Mail supplies and labels, arrange pickup service, obtain delivery information between ZIP Codes, and determine delivery status.
Post Office to Addressee Service (Express Mail - Retail)
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