This money-back guaranteed overnight to two-day service includes tracking, proof of delivery, and insurance up to $100. Additional insurance up to $5,000 may be purchased for merchandise. Sunday and holiday delivery is available to many destinations for an additional fee.

Estimated time of delivery: guaranteed overnight to two-day service.

Express Mail Commercial base prices apply to:

• Customers who use an Express Mail Corporate Account (EMCA), including Federal Agency Accounts.
• Click-N-Ship customers.
• Registered end-users of PC Postage products when using a qualified shipping label.
• Customers who pay postage using Information based Indicia (IBI) postage meters when using an Express Mail shipping label.

Express Mail Commercial Plus prices apply to existing and new customers whose:

• Account volume exceeds a minimum threshold, or has a customer commitment agreement with the USPS, and;
• Uses an Express Mail Corporate Account (EMCA), including Federal Agency Accounts; or,
• Is a registered end-user of USPS-approved PC Postage products when using a qualifying shipping label.

This service is typically used to send documents, gifts, and merchandise.

Estimated time of delivery: 1-3 days.

Priority Mail Commercial base prices apply to:

• Click-N-Ship customers.
• Registered end-users of USPS-approved PC Postage products when using a qualified shipping label.
• Customers who pay postage using Information based Indicia (IBI) postage meters (in conjunction with an approved shipping label that includes a confirmation services barcode with a postal routing code).
• Permit imprint.

Priority Mail Commercial Plus prices are available to the following new and existing customers that meet specific volume or customer agreement requirements:

• Registered end-users of USPS-approved PC Postage products
• Permit imprint customers
• Priority Mail Open and Distribute customers

Priority Mail Open and Distribute expedites the transportation of bulk mailings by using Priority Mail to quickly send the mailings to a destination delivery unit for processing. Because it has a special bar-coded label, you can use USPS.com to track the shipment.

Just prepare your mailing according to the standards for the enclosed class of mail, put it into a USPS-approved container, include the appropriate tag or label, and bring it to a USPS® Network Distribution Center, Sectional Center Facility or Destination Delivery Unit. Then we base the postage price on the weight of its contents (excluding the tare weight of the external container) and regular Priority Mail distance-based prices, so you can move your mailings faster at a reasonable cost.

• Register and download the USPS Shipping Assistant® free desktop application.
• Choose a shipping service software providers from the list of companies that have met Postal Service™ specifications for the electronic file and barcode.
• Register and integrate the USPS Web Tools™ Ecommerce API.

This service is required for personal correspondence, handwritten or typewritten material, and bills or statements of account. It may also be used for any mailable item including advertisements and lightweight merchandise. This service is typically the fastest service offered within commercial mail. Generally, Standard Mail may be mailed at First-Class Mail prices.

500 or more pieces required for Automation and Presorted prices.

Estimated time of delivery: 1-3 days.

Annual mailing fee is required for automation and presorted prices.

Flats containing mailable items not required to be sent as First-Class Mail may be sent as Standard Mail. Standard Mail is typically used for advertisements and flyers. Additional content restrictions must be met for authorized nonprofit mailers.

200 or more pieces or 50 pounds required per mailing.

Estimated time of delivery: 3-10 days.

An annual mailing fee is required.

Contents are limited to permanently bound printed sheets of directory, advertising, or editorial matter, such as catalogs or phone books.

300 or more pieces required for Carrier Route and Presorted prices.

Estimated time of delivery: 2-8 days.

An annual mailing fee is required for destination entry prices.

Media Mail contents are limited to books, manuscripts, sound recordings, recorded videotapes, and computer-readable media (not blank). Informally called "Book Rate," Media Mail cannot contain advertising, except books can contain incidental announcements of other books.

300 or more pieces required for Basic and 5-Digit prices.

Estimated time of delivery: 2-8 days.

An annual mailing fee is required.

Library Mail is generally used by qualified libraries, schools, nonprofit organizations, universities, and museums to mail specific types of Package Services matter that meet additional eligibility standards. Mailable items are limited generally to books, recordings, educational, and museum materials; advertising restrictions apply.

300 or more pieces required for Basic and 5-Digit prices.

Estimated time of delivery: 2-8 days.

An annual mailing fee is required.