you could use a simple hyperylink, that concats the fields for your TO, BCC and BODY. Here is a sample HTML email
<A HREF="mailto:[email protected]?subject=Your Subject&[email protected]&body=Message for the body">Link Text</a>
convert it in IP for a link something like this:
concat("mailto:",mainEmailfield,"?subject=",SubjectField,"&bcc=",bccEmail,"&body=",bodyField)