Greetings, Robert Moskowitz!
I considered maildir, but I cannot be assured that I will catch all local mail deliveries.
With Maildir, it's actually even harder to miss mails, since it's inherently non-blocking.
I set up cron to just my script. That was 'easy'. Then I was looking at logwatch, and I see that in /etc/logwatch/conf/logwatch.conf
mailer = "/usr/local/mycron"
I did not add that, some process corrected logwatch automagically for me. I am not comfortable if I install some other package that does outputs to mail that it would get the change and perhaps deliver in the 'default' mbox manner.
Just a little paranoia here. So I stay with mbox and have to be concerned with file locking....
…or move to Maildir and forget about locking issues. -- With best regards, Andrey Repin Monday, May 18, 2020 18:39:44 Sorry for my terrible english...