in reply to Re: Re: Re: Re: form recipients
in thread form recipients

Before you open the pipe to sendmail but after parsing the CGI query into %FORM, you need to change the $recipients based on the checkbox value: 
if ($FORM{'chkno'}) {
    $recipients .= " foo@example.com";
}
<code>

Then, the command will look like:

<code>
|/usr/lib/sendmail yogibear@test.edu foo@example.com

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The To: line needs to have commas separating the addresses instead of spaces. 
To: yogibear@test.edu, foo@example.com

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Finally, you need to add a blank line between the end of the headers and the start of the HTML. 
print MAIL "Content-Transfer-Encoding: 7bit\n";
print "\n";
print MAIL "<html><head>\n";

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