USPS Postage Help Center
Learn more about the US Postal Service's low cost shipping option that delivers packages within 2 - 3 days.
Learn more about Priority Mail.
USPS® Mail Classes and Services
Learn more about USPS Mail Classes and Special Services
USPS Mail Classes
First Class Mail®
First Class Package Service
Priority Mail Flat Rate Regional Rate Boxes
USPS Special Services
Free USPS Shipping Supplies
Return Shipping labels
USPS Package Insurance
For Stamps.com customers, addresses are automatically cleansed to match USPS specifications. This can prevent returned mail and improve deliverability.
Address Cleansing Basics
USPS Postage Rates
For Stamps.com customers, postage rates are automatically calculated using current rates.
Current Postage Rates
Free USPS Supplies
The USPS offers free shipping supplies to send packages through certain classes of mail. Order your free Express Mail or Priority Mail pre-printed boxes, stickers, or forms today.
Order Free USPS Supplies
Shipping Rate Comparison
Lower your shipping costs. See why USPS shipping rates can be much lower than UPS or FedEx®. Start saving money today!
Compare Shipping Rates
6 tips for Package Shipping to APOs/FPOs
Six tips for letters and packages being sent to an APO or FPO military base.
Learn more about shipping to APOs/FPOs
8 Tips to Lower Your Mailing and Shipping Costs
Check out these eight great tips on how to make your mailing and shipping
budget go the extra mile. Great tips to help you save on shipping
Use Media Mail
Media Mail allows you to send pounds of media for a fraction of the cost,
which can save your small business money.
Use Media Mail to save on shipping