Quoting kryo, reply 6Boxes are shipping starting today via USPS Priority.
USPS is a parent company from UPS? Who will deliver to Europe?
While I find the question very amusing, I have to consider that you don't live in the United States
United States Postal Service is the mail branch run by the US government.
United Parcel Service is a world wide delivery company.
So in spite of common initials, they are no relation to each other.
And I have no idea how international orders are going out. Hopefully someone will come along and answer that.