Express Mail
This money-back guaranteed overnight service includes tracking, proof of delivery, and insurance up to $100. Additional insurance up to $5,000 may be purchased for merchandise. Delivery to many destinations is available 365 days a year with no extra charge for Saturday. Sundays and holiday delivery may be available at additional cost. All packages must use an Express Mail label. The maximum weight is 70 pounds.

Features
Express Mail envelopes, labels, and boxes may be ordered online at The Postal Store and are available at Post Offices. Features include delivery to Post Office boxes and rural addresses, and domestic rates for APO and FPO addresses.

Express Mail delivery status is available with Track and Confirm or by calling 1-800-222-1811.

Express Mail Flat Rate Envelope

Any mailable item sent in a Flat Rate envelope provided by the Postal Service, regardless of weight or destination.