what happens if you ship a package using priority mail but use your own box instead of a flat rate box?
usps
>>61956708
You put in the dimensions into their system, they weight it, then you choose what shipping method you want, and then you pay the amount.
>>61956730
What does this have to do with /pol/
you get fined roughly 130 dollars and are barred from mail drop offs for 6 months then another 6 months probation .