The cult-favourite eMail client formerly known as Qualcomm Eudora
an easy to use pop3 client library in C
Easy and fast tool for delete all the emails in your account
Encrypting E-Mail Client
A Light and Efficient Tray-Based Email Notifier for Windows
Robust open source POP3 client and MIME parser written in C#
Over 600 classes for Web, RFC & File Management