I don't use GPG to encrypt my email, for example, because nobody I know has anything installed capable of decrypting is or even verifying the signature.
I always sign my mail and follow a couple of mailing lists where gpg usage is not uncommon.
Sorry, I rambled on a bit there, but the point is, there's no real support or infrastructure for this kind of encryption.
Well, it's "some" better. The gpg4win download contains everything a windows user needs because it includes the windows version of claws mail, which has gpg support built in; the windows version of Kleopatra and GPA, two GUI's for gpg.
And the gpg4win documentation is "somewhat" better than it used to be. At least the PDF version is,
http://wald.intevation.org/frs...
the HTML version still has sucky navigation:
http://www.gpg4win.org/doc/en/...
It's not built into the applications that people already use, so they have to get multiple plugins, and then other supporting files for those plugins.
Thunderbird really needs gpg support built in by default, like claws mail does. Technically the gpg support in claws-mail is also a plugin, but the plugin is included by default.
It's just a mess before you even get to key management, and there's not really a good, iron-clad key management system.
I'm not sure what you mean by that? But yes, it's not optimal on Windows. For us Linux users it's much easier because gpg is usually installed by default and every thing we need is a "yum install" or "apt-get install" away