> I only seem to be able to generate the To: and Subject: lines, then the
> Body: is just one line.
Anything but To, Bcc, and Cc are completely invalid in a mailto tag
and against the specification. The "Subject" kludge was something that
Netscape put into the browser to support their MUA.
Some browsers may support it, but it's not in the specification, and
in fact is against RFC822 itself. Based on that, Body is definately
verboten, even if browsers attempt to support it, it's not going to work in
all browsers.
Adding a hack to Plucker's parser to support it would probably be
possible, but there's no guarantee that the MDA/MTA will preserve those
elements when the mail is sent.
[dd]
