#18 MrPostman to support webmail accounts

[Keno Albrecht]

I just learned about MrPostman. Kind of proxy that
transforms emails from a webpage (yahoo, hotmail,
gmail, ...) to a real email and proxies it to an
arbitrary email client as a local POP3 server.

MrPostman is also a GPLed SourceForge project. We could
check if it is possible to integrate it as a plugin or
part of Spamatoxy so that webmail users can use Spamato
as well.