The USPS Flat Rate Padded Mailer is often the cheapest way to send a Prime order. This option is available directly on Amazon, but it is missing from ShippingEasy. Please add this option to ShippingEasy. Thanks!
Hello Keith and Carly, thank you for posting to our forums!
Are you referring to the USPS Flat Rate Padded Envelope? Or is the "USPS Flat Rate Padded Mailer" different? If so, can you point us in the direction of that packaging option on the USPS website?
For the most part, Amazon limits the available shipping carrier and packaging options in ShippingEasy, based on their eligible services.
In other words, ShippingEasy only displays the carrier services that Amazon indicates are eligible for use with a specific Amazon Prime order, however, it's possible the "USPS Flat Rate Padded Mailer" is something we could add if it is a different option.
Thanks.