When you create a label in Pirate Ship, you'll need to select the correct packaging option from the Type of Packaging drop-down menu in order to get the correct rate:

Depending on what you select, you may be restricted to certain packaging and services 👍 We've created a breakdown of all the options in that list, and have listed out the different kinds of boxes & envelopes you can use with each one:

Box or Rigid Packaging

You can use:

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

For info on selecting Priority Mail Flat Rate and Regional Rate packaging, scroll down.

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

You can use:

  • 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

You can use:

Priority Mail Medium Flat Rate Box

You can use:

Priority Mail Large Flat Rate Box

You can use:

Priority Mail Flat Rate Envelope

You can use:

Priority Mail Legal Flat Rate Envelope

You can use:

Priority Mail Padded Flat Rate Envelope

You can use:

Regional Rate Box A

You can use:

Regional Rate Box B

You can use:

Priority Mail Express Flat Rate Envelope

You can use:

Priority Mail Express Legal Flat Rate Envelope

You can use:

Priority Mail Express Padded Flat Rate Envelope

You can use:

Have any questions about different packaging types? Click the blue chat icon to get in touch with our Support Crew 😃

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