If a file is used to store the template then simply make the first line of the file read:
Subject: --Your-Subject-Here--If instead you place the template in the HTML source of the form, simply place the subject before the first carriage return in the template. The line including your template might look like:
<INPUT TYPE=hidden NAME=ZD-Method VALUE="ZD-Mail;user@someplace;body:Subject:This is the subject of my mail This is the first line of the body of the template itself. This is the last line of the body of the template itself.">When Zot-Dispatch finds "Subject:" in the first line of the template, that line will be removed from the body of the template and everything following the colon (:) will be made the subject line of the mail. If "Subject:" is not found, then nothing will be done to the template.
There is no way at this time to get a subject line on an e-mail message that uses the default response (list of name-value pairs), the default subject line is used.