When you create a label in Pirate Ship, you'll need to select the correct type of packaging in order to receive the correct rate. There are quite a few options to pick from, so we've created a breakdown of what qualifies for each packaging type 👍

Box or Rigid Packaging

* Note: You can only use Priority Mail-branded boxes or envelopes with the Priority Mail service, so make sure to choose that service before clicking the BUY button, as this packaging cannot be used with First Class Package, Parcel Select Ground, Media Mail, or First Class Package International, or Simple Export Rate.

Envelope, Padded Envelope, Poly Bag, Soft Pack, or Box in a Bag

  • Any custom or plain mailing envelope, padded envelope, poly bag, or soft pack
  • A box that was put inside of a poly bag or envelope (Box In a Bag)—as long as the bag is still floppy and doesn't look like a box!
  • Priority Mail Tyvek Envelope*

Priority Mail Small Flat Rate Box

Priority Mail Medium Flat Rate Box

Priority Mail Large Flat Rate Box

Priority Mail Flat Rate Envelope

Priority Mail Legal Flat Rate Envelope

Priority Mail Padded Flat Rate Envelope

Regional Rate Box A

Regional Rate Box B

Priority Mail Express Flat Rate Envelope

Priority Mail Express Legal Flat Rate Envelope

Priority Mail Express Padded Flat Rate Envelope

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