1-3 Business Days 1-3 Business Days1 & Flat Rate Pricing Priority Mail® service includes tracking and delivery in 1-3 business days1. Check delivery time estimates on the Priority Mail Delivery Map. Priority Mail Flat Rate® products let you ship packages up to 70 lbs to any state at the same price.

Online: Use USPS Tracking® on the United States Postal Service® website. By text: Send a text to 28777 (2USPS) with your tracking number as the content of the message.

Priority Mail Express Flat Rate Products

USPS Priority Mail Flat Rate Options

1-3 business days Flat-rate shipping methods usually have an estimated delivery time that specifies the expected number of days it will take for an item to be delivered, usually within a small range(1-3 business days, for example, is common in the UK).

Priority Mail does not provide a money-back guarantee if a mail item doesn't get delivered within three business days. If a money-back guarantee is something you want, then sending via Priority Mail Express is the best option as it provides money back if an item doesn't arrive within two days.

Navigate to stamps.com/tracking/. Enter the USPS tracking number (to find it, simply look at the bottom of a shipping label) in the search bar; do not include any dashes or spaces. Click on “Check Status”. View the scan history and status information of your package.

If you are primarily shipping products locally across short distances, opting for Priority Mail services rather than Fixed Rate might make sense. If your shipments generally cover a long distance or you are shipping all across the US, Flat Rate envelopes and boxes will often work out to be cheaper.

Domestic Priority Mail Flat-Rate Packaging Information

The main difference between USPS Priority Mail and USPS Flat Rate is the way the shipping cost is calculated. USPS Priority mail uses the dimensional weight and shipping distance to calculate the shipping cost. On the other hand, USPS Flat Rate uses only the package size to calculate the shipping cost.

Cut on shipping costs When used with the right USPS service, custom packaging is often cheaper than USPS Medium flat rate boxes. With medium and large flat rate boxes offered by the USPS for free, it's a great, cost-cutting option.

• Priority Mail® Flat Rate Options: Large Flat Rate Box.
• Maximum Weight : up to 70 lbs.
• Outside Dimensions : 12 1⁄4″ x 12 1⁄4″ x 6″
• Post Office™ Rate : $21.50.
• Stamps.com Rate : $19.20.