Going Postal (Discworld #33)

Terry Pratchett puts his stamp on the thirty-third Discworld novel.
"The post was an old thing, of course, but it was so old that it had magically become new again.
"The post office is an ailing institution belonging to the olden days. New technology overshadows its mind-numbing bureaucracy and the creakingly slow pace of change. You can call them nostalgic, but there are still people who believe in the post: in the beauty of stamps and cast-iron pillar boxes, and the dignity of the postman braving hail, wind and troublesome dogs. And sometimes it's worth standing up for what you believe in.