Build a small read-only mailbox viewer in this working folder. It lists the ten newest messages, one line each: date, sender and subject.
Test it first on a folder of five made-up sample emails that you create yourself, including one with an accented character.
It may only read mail: never mark, move or delete anything. Do not connect to any real account, and never ask me for a password or write one anywhere.
Show me how I check it: the list of the sample mail, newest first, and proof that the sample files are identical before and after the run.
