Gpg4win is free email tools with an installation package for Windows Operating System containt some application, email handbooks, and also file encryption. Gpg4win are absolutely free

You can choose all or some of the following modules during installation:
* GnuPG: The core; this is the actual encryption tool
* WinPT: A key manager and helper for various encryption matters
* GPA: Another key manager, tasts are simply different
* GPGol: A plugin for Microsoft Outlook 2003 (email encryption)
* GPGee: A plugin for Microsoft Explorer (file encryption)
* Sylpheed-Claws: A complete email program including the plugin for GnuPG Continue Reading or downloading »
gpg4win 2.0.1 RC1 – Free Multi Email Security Modules