Peephole is a GNU/linux server that periodically
checks users' mailboxes, and harvests the last few
email messages, extracting user-defined regular
expressions. Each user, once logged in, has to
define his mail providers and other settings.
Peephole supports various mail protocols, such as
POP3, POP3S, and APOP. The project also provides
two clients. The first is a GUI (WindowMaker
dockapp) that lights up a user-defined icon when
Peephole finds an interesting message on the mail
server. The second is a text console client.