Very straightforward to use (I needed to send a URL/webpage as HTML email with embedded images/objects). With this module I can finish my job with only a few lines of Perl in 3-5 minutes (searching for this module in CPAN takes more than that! searching using "mail web" or "email url" at first didn't get results).
Blackberry is having trouble displaying the resulting email though. No problem with Gmail or Thunderbird/Icedove.