Pirate Ship

The Priority Mail Medium Flat Rate Box and Large Flat Rate Box are up to 58% more expensive than using your own box

Why you shouldn't use Medium or Large Flat Rate Boxes

Learn what qualifies for Media Mail® and how to access it

Learn about this "secret" dimension-based USPS shipping service that's perfect for sending small and heavy packages

See the 6 free "mailing boxes" from USPS that you can use with weight-based Priority Mail or Priority Mail Cubic

Learn how you can use USPS Priority Mail Cubic Softpack as a cheap & fast way to ship envelopes or poly mailers

Now you can save even more with Priority Mail at deeper discounts than the published Commercial Pricing rates

Understanding USPS® "non-standard" fees that some packages may be subject to

Learn more about the changes USPS is making on July 9th, 2023

A quick guide on size & weight restrictions for shipping with USPS

Understanding USPS and UPS surcharges for large but lightweight shipments

Learn why you might see existing tracking data for a different package when you enter your tracking number on the USPS website

Here are lists of items that are illegal to ship with the Postal Service (for both domestic and international destinations)

Some USPS and UPS packages can be intercepted and returned to you before they're delivered

Learn what your cheapest shipping option is for sending a poster on Pirate Ship

The USPS® Electronic Delivery Confirmation program (E-DELCON) provides full package tracking to certain countries.

Learn how USPS confirms that the correct amount of postage has been purchased, and adjusts your account for any differences.

Learn why Pirate Ship doesn't sell USPS® First Class Mail International Flats or other mailing services

Learn some simple rules of thumb about which USPS shipping services will save you the most money

Learn about Priority Mail shipments that don't qualify for Priority Mail Cubic...and are sometimes cheaper!

Learn about Priority Mail flat rate postage and why it's often cheaper to use your own packaging and ship with a different service