Having delved further into Mail::Message, I think I can adapt what I had with Mail::File to use that instead. It means my Local CPAN Testing suite will have a dependancy for MailBox, which to my mind is a bit of an overkill, but I guess that's not such a big deal.
I finally released WWW::UCC to CPAN. I used to use it alot to save me manually submitting the forms. I haven't been doing as much trading on eBay of late to do any currency conversions, but thought someone might find it useful.
My next priorities will be finishing the first stage of Mail::Outlook, more work on WWW::Auction::eBay (enough to release officially) and making more headway to completing the Birmingham bid for YAPC::Europe::2006 website.