The more zones it crosses, and the more postage you pay. The actual distance is measured by 'zones.' Zones range from zone 1 (local, close to you) to zone 9 (very far away from you). Priority Mail postage is determined by how far the mailpiece must travel to get to its destination: the farther it travels the more you pay in postage. USPS Tracking is free of charge on Priority Mail. Registered Mail service is available at retail Post Offices and online for a fee.

You can enhance the service, security, and convenience of Priority Mail by addingĮxtra services such as USPS Tracking and Registered Mail. Priority Mail postage includesįorwarding and return service. If getting your mail there fast is your top priority, Priority Mail offers the best value.

All matter sealed or otherwise closed against inspection.

Personal correspondence (a letter to Grandma), personalized business correspondence (a handwritten letter to your customer).

Bills, statements of account or invoices, credit cards.

Some things MUST be mailed as Priority Mail (or First-Class Mail), including: USPS Marketing Mail Eligibility Decision TreeĪll matter that is mailable by air transportation can be mailed as Priority Mail.Designing Letter and Reply Mail (PUB 25).

Priority mail flat rate bubble envelope