Post Office jokes

What has more letters than the alphabet? -- The post office.

What starts with "P" and ends with "E" and has a million letters?

Post Office.

Did you hear about the homosexual letter? It only came in male boxes.

What starts with E, ends with E, and has only 1 letter in it? An envelope.

What starts with e, ends with e, and only contains one letter? -- An envelope.

Could a phone booth also be called a chatterbox?