Control Freak

Control Freak is Windows File Manager that incorporates several other applets into one seamless application. You get an Explorer like file manager, a full-featured email client, an FTP client, a zip file manager, a cab file manager, a powerful file finder, and an expanded control panel. It also has an Address Bar, The Command Line, which starts were Explorer's Address Bar leaves off.
Mail Call
Mail Call is a full-featured email client supporting the SMTP Internet email protocol. It has support for HTML, plain text, and full web pages. Supports multiple mail accounts and has a Remote Mailbox for getting a quick peek of what is waiting for you. And, of course, you can send and receive binary file attachments.
FTP It
FTP It is a full-featured FTP client allowing you to log on to remote FTP servers to upload or download files. Because it is integrated with the file manager you have support for drag and drop or copy and paste file transfers.
Zipster and Cabaret
These two applets allow you to manage zip and cab files. Compress a single file or several folders to clean up clutter or get files ready for email. Both Zipster and Cabaret allow you to have several files open at once. They allow drag and drop or copy and paste file compression or extraction. Control Freak also comes with a small zip and cab file utility called Zippy for use with Windows Explorer and My Computer. You can add menus to Explorer's context menus so Zippy becomes integrated with Windows Explorer for expanded zip and cab file management.
Lost & Found
Not only is Lost & Found a powerful file finder but the Lost & Found window can be used as holding area for an unrelated group of files you want to perform a common task on. You can drag and drop or copy and paste files into the Lost & Found window. Once there you can perform any normal file management duties on the files.