I left behind a couple of prescriptions at Marcia and Rutger's house when we last visited, and of course realised this about an hour after we left for Aspö. I called Marcia and she retrieved them and mailed an envelope to me later that day.
The next morning, when the 0830 boat arrived, there was my envelope in the mail packet. Marcia said she mailed it at about 1400 the day before. How's that for postal efficiency!