Are you complaining that there are no Mail::* modules that follow 100% of the RFCs? Or that 99.9% of the modules on CPAN aren't reliable, secure, etc.? Or both?
Both.

OK then -- my suggestions is that you pick a module, retrofit it to make it reliable and secure (according to your standards) and post the results here on Perlmonks.

We gladly await your results, and promise to buy you beer at the next YAPC.