I have been browsing the BBC Radio 4 Extra schedules and came across 5 stories by Julia Darling called Posties. The omnibus edition of all 5 stories can still be listened to for almost a month at http://www.bbc.co.uk/programmes/b0788hrj. I am currently listening to it now. First story was quite good - a long lost letter finally delivered.
"I would far rather receive a letter than a casually written email."
"There is something decent about a letter: its firmness; its privacy; the sound it makes when it falls from the letterbox to the mat; the assertiveness of a stamp; the postmark......."
Update - rather good collection of postal stories. Well worth a listen if you have time.