SharpWebMail is an ASP.NET WebMail application written in C#. It uses a POP3 server as the mailstore and sends mail through a SMTP server. You can compose HTML messages, search your inbox, read complex mime messages and much more.
Auto_ftp.pl came to be because I wanted to make a ftp client daemon that could be loaded on a server. Once loaded it would watch a shared folder and ftp anything put into that folder to the remote ftp site.