Mail & Shipping Services
USPS has express and standard mail services to fit your needs. Depending on what items you’re sending (and when you want them delivered), choose based on:
- Fastest delivery speed
- Most affordable price
- Shipping online vs. at a Post Office™ location
Compare Mail Services
Compare USPS mail services by starting retail prices, delivery speed, and more. Most services automatically include USPS Tracking® (except First-Class Mail® service), and you can add insurance and extra services.
Save on Shipping: If you’re using Priority Mail Express®, Priority Mail®, or USPS Ground Advantage™ service, you can ship online with enhanced Click-N-Ship® service and get lower Commercial Rates. Businesses can get additional savings by opting in to the Business Rate Card.
Priority Mail Express
Next-Day to 2-Day Guarantee by 6 PM2
Our fastest domestic shipping service, Priority Mail Express® delivers 7 days a week, 365 days a year (with limited exceptions). Next-day delivery is available to most U.S. addresses and PO Box™1 addresses with a money-back guarantee2. With our free Flat Rate Envelopes, you don’t need to weigh shipments 70 lbs and under. Purchase Priority Mail Express postage and shipping labels at a Post Office™ location or online. Prices start at $30.45 at a Post Office. (Ship online with enhanced Click-N-Ship service and get lower Commercial Rates.)
Priority Mail
Shipping in 1–3 Business Days
Our fastest domestic shipping service, Priority Mail Express® delivers 7 days a week, 365 days a year (with limited exceptions). Next-day delivery is available to most U.S. addresses and PO Box™1 addresses with a money-back guarantee2. With our free Flat Rate Envelopes, you don’t need to weigh shipments 70 lbs and under. Purchase Priority Mail Express postage and shipping labels at a Post Office™ location or online. Prices start at $30.45 at a Post Office. (Ship online with enhanced Click-N-Ship service and get lower Commercial Rates.)
USPS Ground Advantage
Shipping in 2-5 Business Days
Our fastest domestic shipping service, Priority Mail Express® delivers 7 days a week, 365 days a year (with limited exceptions). Next-day delivery is available to most U.S. addresses and PO Box™1 addresses with a money-back guarantee2. With our free Flat Rate Envelopes, you don’t need to weigh shipments 70 lbs and under. Purchase Priority Mail Express postage and shipping labels at a Post Office™ location or online. Prices start at $30.45 at a Post Office. (Ship online with enhanced Click-N-Ship service and get lower Commercial Rates.)
First-Class Mail
Shipping in 2–8 Business Days
Our fastest domestic shipping service, Priority Mail Express® delivers 7 days a week, 365 days a year (with limited exceptions). Next-day delivery is available to most U.S. addresses and PO Box™1 addresses with a money-back guarantee2. With our free Flat Rate Envelopes, you don’t need to weigh shipments 70 lbs and under. Purchase Priority Mail Express postage and shipping labels at a Post Office™ location or online. Prices start at $30.45 at a Post Office. (Ship online with enhanced Click-N-Ship service and get lower Commercial Rates.)
First-Class Mail
Shipping in 2–8 Business Days
Media Mail® is a cost-effective way to send eligible books, media, and educational materials. You can only send certain types of media: If you try to include anything that’s not allowed, you (or your recipient) will have to pay higher postage rates. All Media Mail packages are subject to opening and inspection by the Postal Service. Prices start at $4.13 at a Post Office.
Using Media Mail
Here’s what you can send:
- Books (at least 8 pages)
- 16-millimeter or narrower width films
- Printed music and test materials
- Video and sound recordings (including tapes, albums, and CDs/DVDs)
- Playscripts and manuscripts
- Printed educational reference charts
- Medical loose-leaf pages and binders
- Computer-readable media
NOTE: Video games, computer drives, and digital drives do not qualify for Media Mail prices.
Weight, Size, & Shape Requirements
- Maximum weight is 70 lbs.
See the full list of requirements and allowed items: Media Mail Eligibility Standards
(Note: Library Mail is a related service for eligible organizations, including schools, museums, nonprofits, and other groups.)
First-Class Mail
Dimensional (DIM) weight rates apply to large, lightweight packages. If your package is larger than 1 cubic foot (1,728 cubic inches):
- Multiply Length x Width x Height and divide by 166 to get the DIM weight in pounds.
- If the DIM weight is greater than the actual package weight, you’ll need to pay the DIM weight price.
Example: You have a package that is 16” x 12” x 10” and weighs 5 lbs.
- Multiply length x width x height to get the volume of 1,920 cubic inches. That’s larger than 1 cubic foot (1,728 cubic inches), so you must divide by 166 to find its DIM weight: 1,920 divided by 166 equals 11.56, which rounds up to 12 lbs.
- The DIM weight of 12 lbs is greater than the actual package weight of 5 lbs. You must pay the postage as if the package actually weighs 12 lbs.
If you omit or give inaccurate dimensions and/or don’t pay the DIM weight rate (when it applies), you’ll pay a dimension-noncompliance fee of $1.50.
- Nonstandard Fee: You’ll pay an extra fee for sending a nonstandard size:
- For ground shipping via USPS Ground Advantage, you’ll pay more if your package measures:
- Between 22 and 30 inches long: add $4.00
- More than 30 inches long: add $8.40
- More than 2 cubic feet (3,456 cubic inches): add $18.00
- For expedited shipping (via Priority Mail Express or Priority Mail), you’ll pay more if your package measures:
- Between 22 and 30 inches long: add $4.00
- More than 30 inches long: add $18.00
- More than 2 cubic feet (3,456 cubic inches): add $30.00
- For ground shipping via USPS Ground Advantage, you’ll pay more if your package measures:
For business shippers using Parcel Select® service, learn more about how to measure your package and what fees may apply.
TIP: Use the USPS® Price Calculator tool to calculate your domestic postage costs. You’ll need to know your package’s weight, shape, and size measurements.