On Linux, I use a .forward file of the form: 
myusername
|/home/myusername/bin/wmail.pl

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My wmail.pl file has a line: 
@text=<>;

[download]
and then I process the contents in various ways (e.g., filtering some messages, putting some in a file I can read in a web browser, etc.) Pretty rudimentary, but it works well for me.
chas
(Update-remark: The .forward file sends my emails to the usual spool via the first line, and then I can do anything else with it with the script. The first line could be omitted; I included it to have a backup file.)

In reply to Re: Perl and Sendmail by chas
in thread Perl and Sendmail by Bugorr

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