in reply to Re^3: sendmail working for me but not another
in thread sendmail working for me but not another

Wow, thanks for this. I see what you mean. I will go through it after I figure out where my error is. In the send mail part 

my $mailprog = '/usr/sbin/sendmail';
open my $mailhandle, '|-' "$mailprog -t"
    or die "Could not open mailhandle";
print $mailhandle $email_message;
close $mailhandle;

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What are you doing with mailhandle?

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Re^5: sendmail working for me but not another
by parv (Parson) on May 26, 2020 at 11:30 UTC

    For details, see open and fork functions to start.

    That open syntax forks the process (which I had long forgotten); $mailprog is run in child process. A pipe is opened to $mailprog in order to write to its standard input by writing to $mailhandle. (If the pipe-open syntax were -|, then that would be to read standard output of the command.)

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