Once my graduate school economics professor who'd been the United States Post Master General put a question mark next to the term "fork out" in a research paper i wrote, meaning, there's no such English. He thought a foreign student couldn't know something he didn't. Ignorance, arrogance, or both?
Wikipedia:
The US Postmaster General is the executive head of the US Postal Service. B Franklin was...the first Postmaster General...
Until 1971, the Postmaster General was the head of the Post Office Department. During most of that period, he's a member of the President's Cabinet and was last in the presidential line of succession...
In 1971, the P O Department was re-organized into the United States Postal Service, a special agency independent of the executive branch... Postmaster General is no longer a member of the Cabinet and is no longer in line to be President...