Postmaster General?
I chuckled at this suggestion.
I would humbly add, The Duke of York:
Oh, The grand old Duke of York,
He had ten thousand posts;
He babbled about through all the day,
And when night fell he blathered away.
And when he was on he was on,
And when he was off he was off,
And when they were only so-so posts,
We still called him a 'toff.