Minimum Weight: None

Maximum Weight: 70 pounds

Express Mail is the fastest mail service offered by the Postal Service. It provides guaranteed expedited service for any mailable matter. Express Mail delivery is offered 365 days a year, including Sundays and holidays. Express Mail packaging supplies (envelopes, boxes, tubes) are available for free from your local Post Office. If getting your mail there overnight is your highest priority, then Express Mail is the best choice. Many businesses use First-Class Mail or Standard Mail for regular mailings and Express Mail for important business documents, like contracts and sales orders.

Express Mail rates are based on the weight of the piece, and how far the piece travels.

Flat-Rate envelope: $16.50 is charged for anything mailed in the special flat rate envelope provided by the USPS, regardless of weight.

Quick Service Guide 110 – Overnight/Express Mail[1]

Interactive Decision Tree[2]: Six easy questions will lead you directly to the information you need about Express Mail.

Calculate postage for Overnight/Express Mail[3]

Order free Overnight/Express Mail supplies[4]

Track and confirm Overnight/Express Mail packages[5]